CN113530514A

CN113530514A - Control method and system for preparing oilfield operation reagent

Info

Publication number: CN113530514A
Application number: CN202110654436.2A
Authority: CN
Inventors: 刘伟韦; 李守哲; 刘凯深; 毛竹青; 张颂; 孙昊亮; 张鹏远; 王振猛; 李亮
Original assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Current assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-10-22

Abstract

The embodiment of the invention provides a control method and a system for preparing an oilfield operation reagent, wherein the method comprises the following steps: acquiring equipment identification information, oil field geological parameter information and well site stratum parameter information of oil field operation working condition equipment on an oil field operation site; judging whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target wellsite on an oilfield operation site based on the geological parameter information of the oilfield; controlling oil field operation working condition equipment to prepare a yield operation related reagent corresponding to a target oil field yield increasing mode based on the well field stratum parameter information; based on the performance parameter information of the agent related to the yield increasing operation, the controlled adding device provides at least one target chemical additive corresponding to the target oil field yield increasing mode for the oil field operation working condition equipment, so that the preparation of the agent related to the oil field operation and the addition of the chemical additive are automatically controlled by combining the field condition of the oil field operation.

Description

Control method and system for preparing oilfield operation reagent

Technical Field

The invention relates to the field of oilfield operation, in particular to a control method and a control system for preparation of an oilfield operation reagent.

Background

Currently, a variety of different agents are used in oilfield operations, for example, at least one of fracturing fluids, acid fluids, and various chemical additives are used in oilfield stimulation operations.

The fracturing fluid is injected into an underground oil layer by utilizing the high pressure of ground equipment in the yield increasing operation, so that a new crack is formed in a stratum, the original crack of the stratum is expanded, a propping agent is brought into the crack, and the performance of the fracturing fluid is directly related to the yield increasing effect; the acid liquor improves the permeability of stratum pores and cracks through the dissolving and corrosion effects of the acid liquor on rock cement or plugs in the stratum pores and cracks in the yield increasing operation, thereby achieving the purposes of yield increase and injection increase of oil and gas wells; furthermore, various chemical additives are required to be added in the process of preparing the fracturing fluid or preparing the acid liquor.

In the process of implementing the invention, at least the following problems are found in the related art: as various reagents are manually prepared and then transported to an oilfield operation site when being prepared in a traditional factory, the problems that the preparation of relevant reagents in an oilfield according to needs cannot be ensured, and the flexible addition of chemical additives cannot be ensured exist, so that the problems of high reagent preparation cost, reagent waste and poor oilfield operation effect exist.

Disclosure of Invention

The embodiment of the invention aims to provide a control method and a control system for preparation of an oilfield operation reagent, and aims to solve the technical problems that in the prior art, various reagents are manually prepared and then transported to an oilfield operation field when various reagents are prepared in a traditional factory, preparation of relevant reagents in an oilfield according to needs cannot be guaranteed, and flexible addition of chemical additives cannot be guaranteed, so that reagent preparation cost is high, reagents are wasted, and oilfield operation effect is poor.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a method for controlling preparation of an oilfield operation reagent, where the method includes:

acquiring operation parameter information of an oilfield operation field; wherein the job parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information;

judging whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information;

if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the oilfield geological parameter information; wherein the target oil field stimulation mode comprises the following steps: a fracturing stimulation mode or an acidizing stimulation mode;

controlling oil field operation working condition equipment to prepare a yield operation related reagent corresponding to the target oil field yield increasing mode based on the well field stratum parameter information of the current operation stratum; and the number of the first and second groups,

and controlling a chemical addition device to provide at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation working condition equipment based on the performance parameter information of the stimulation operation related reagent.

In a second aspect, an embodiment of the present invention provides a control system for oilfield operation reagent preparation, which is applied to the central controller according to the first aspect, and the system includes: the system comprises a central controller, a chemical addition device, an oil field operation working condition device and a field parameter acquisition device; the chemical adding device, the oilfield operation working condition equipment and the field parameter acquisition equipment are all connected with the central controller;

the field parameter acquisition equipment is used for acquiring operation parameter information of an oilfield operation field and transmitting the operation parameter information to the central controller; wherein the job parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information;

the central controller is used for judging whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the oilfield geological parameter information; wherein the target oil field stimulation mode comprises the following steps: a fracturing stimulation mode or an acidizing stimulation mode;

the central controller is further used for controlling the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the wellsite stratum parameter information of the current operation stratum; and controlling the chemical addition device to provide at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation working condition equipment based on the performance parameter information of the stimulation operation related reagent.

The invention provides a control method and a system for preparing an oilfield operation reagent, wherein the method comprises the following steps: acquiring operation parameter information of an oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller judges whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the geological parameter information of the oilfield; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode; the central controller also controls the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the well site stratum parameter information of the current operation stratum; when the target oil field production increasing mode is a fracturing production increasing mode, the corresponding production increasing operation related reagent is fracturing fluid; when the yield increasing mode of the target oil field is an acidification yield increasing mode, the corresponding yield increasing operation related reagent is acid liquor; and based on the performance parameter information of the reagent related to the yield increasing operation, the controlled chemical addition device provides at least one target chemical additive corresponding to the target oil field yield increasing mode for the oil field operation working condition equipment, so that the required reagent is automatically prepared on the oil field operation site according to the parameter information of the geology and the stratum of the oil field well site, and the flexibility of reagent preparation is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic flow chart of a first method for controlling the preparation of an oilfield operation agent according to an embodiment of the present invention;

fig. 2 is a first specific structural schematic diagram of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

FIG. 3 is a schematic flow chart of a second method for controlling the preparation of oilfield operations reagents according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of a third method for controlling the preparation of oilfield operations reagents according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a second specific structure of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a third specific structure of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

fig. 7 is a schematic diagram of a fourth specific structure of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

fig. 8 is a schematic diagram of a fifth specific structure of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

fig. 9 is a schematic diagram of a sixth specific structure of a control system corresponding to the control method for preparing the oilfield operation reagent according to the embodiment of the present invention;

fig. 10 is a schematic view of an application scenario of a control system for oilfield operation reagent preparation according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a control method and a system for preparing an oilfield operation reagent, wherein the method comprises the following steps: acquiring operation parameter information of an oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller judges whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the geological parameter information of the oilfield; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode; the central controller also controls the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the well site stratum parameter information of the current operation stratum; when the target oil field production increasing mode is a fracturing production increasing mode, the corresponding production increasing operation related reagent is fracturing fluid; when the yield increasing mode of the target oil field is an acidification yield increasing mode, the corresponding yield increasing operation related reagent is acid liquor; and based on the performance parameter information of the reagent related to the yield increasing operation, the controlled chemical addition device provides at least one target chemical additive corresponding to the target oil field yield increasing mode for the oil field operation working condition equipment, so that the required reagent is automatically prepared on the oil field operation site according to the parameter information of the geology and the stratum of the oil field well site, and the flexibility of reagent preparation is improved.

That is, the central controller judges whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information of the oilfield operation working condition equipment acquired by the field parameter acquisition equipment, if so, determining an oil field production increasing mode based on the collected oil field geological parameter information, controlling oil field operation working condition equipment to prepare a production increasing operation related reagent required by the oil field production increasing mode according to a corresponding reagent preparation process based on the collected well field stratum parameter information, controlling a chemical addition device to provide at least one target chemical additive for the oil field operation working condition equipment based on the performance parameter information of the production increasing operation related reagent, therefore, the preparation of the relevant reagents for the oilfield operation and the addition of the chemical additives are automatically controlled by combining the conditions of the oilfield operation field (such as the geological parameter information of the oilfield and the stratum parameter information of the wellsite).

Fig. 1 is a schematic flow chart of a control method for preparing an oilfield operation reagent according to an embodiment of the present invention, and as shown in fig. 1, the control method includes:

s102, acquiring operation parameter information of an oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information;

s104, judging whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information;

if so, executing S106, and determining a target oilfield production increasing mode required by a target well site in an oilfield operation site based on the oilfield geological parameter information; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode;

s108, controlling oil field operation working condition equipment to prepare a yield operation related reagent corresponding to a target oil field yield increasing mode based on the well field stratum parameter information of the current operation stratum; and the number of the first and second groups,

s110, controlling the chemical addition device to provide at least one target chemical additive corresponding to a target oilfield production increasing mode for oilfield operation working condition equipment based on the performance parameter information of the production increasing operation related reagent;

if the judgment result is negative, S112 is executed, and the oil field operation working condition equipment is controlled to execute corresponding oil field working condition operation based on the well site stratum parameter information of the current operation stratum; and the control chemical addition device provides at least one target chemical additive required by the oil field operation working condition equipment.

In specific implementation, fig. 2 is a schematic diagram of a first specific structure of a control system corresponding to the control method for preparing the oil field operation reagent in fig. 1 according to an embodiment of the present invention, as shown in fig. 2, the control system includes: the system comprises a central controller 202, a chemical addition device 204, oilfield operation working condition equipment 206 and field parameter acquisition equipment 208; wherein, the chemical adding device 204, the oilfield operation condition equipment 206 and the field parameter acquisition equipment 208 are all connected with the central controller 202;

the central controller 202 may include only one processor, and the processor controls the chemical adding device 204, the oilfield operation condition device 206, and the field parameter collecting device 208, and correspondingly, the central controller 202 directly sends corresponding control signals to the chemical adding device 204, the oilfield operation condition device 206, and the field parameter collecting device 208; correspondingly, the central controller 202 may also include a plurality of processors, where the plurality of processors include a central processor and a plurality of sub-processors, the sub-processors are respectively disposed on the chemical addition device 204, the oilfield operation condition device 206, and the field parameter collecting device 208, and correspondingly, the central controller 202 respectively sends corresponding control signals to the sub-processors disposed at the respective device ends through the main processor, so that the sub-processors control the chemical addition device 204, the oilfield operation condition device 206, and the field parameter collecting device 208 based on the control signals;

specifically, the oilfield operation condition device 206 may be implemented by a plurality of independent devices, for example, the oilfield operation condition device 206 includes an independent fracturing fluid blending device or an acid fluid blending device, and the oilfield operation condition device 206 may also be integrated together, for example, the oilfield operation condition device 206 includes an oilfield production increase operation device, and in case of adopting a fracturing production increase mode, the oilfield operation condition device 206 serves as the fracturing fluid blending device, and in case of adopting an acidification production increase mode, the oilfield operation condition device 206 serves as the acid fluid blending device; further, the chemical adding device 204 may exist as a stand-alone device, or may be integrated with the oilfield operation condition device 206.

The field parameter collecting device 208 is configured to collect operation parameter information of an oilfield operation field, and transmit the operation parameter information to the central controller 202; wherein the operation parameter information includes: equipment identification information, oil field geological parameter information and well site formation parameter information of the oil field operation condition equipment 206;

in specific implementation, the field parameter collecting device 208 may be a touch-controllable display screen, an image collecting device, or various sensors; for example, a selection touch signal of a user for the currently operated oilfield operation condition device 206 is received through the touch-enabled display screen, and the device identification information of the oilfield operation condition device 206 is determined based on the touch signal; for another example, image information of the currently operating oilfield operation condition device 206 on the oilfield operation site is captured by the image acquisition device, and device identification information of the oilfield operation condition device 206 is determined based on the image information; for another example, a formation structure signal of the oil well is collected by a formation detector, and oil field geological parameter information and wellsite formation parameter information are determined based on the formation structure signal of the oil well.

The central controller 202 is configured to determine whether a current oilfield operation node is an oilfield production increase operation node based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the oilfield geological parameter information; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode;

the central controller 202 is further configured to control the oilfield operation condition equipment 206 to prepare a yield operation related reagent corresponding to the target oilfield yield increase mode based on wellsite formation parameter information of a current operation formation; and controlling the chemical adding device 204 to provide at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation condition equipment 206 based on the performance parameter information of the stimulation operation related reagent.

Specifically, the agent related to the yield increasing operation may include a target fracturing fluid or a target acid fluid; when the target oil field production increasing mode is the fracturing fluid production increasing mode, the fracturing fluid corresponding to the fracturing fluid production increasing mode is prepared by the oil field operation working condition equipment 206, and when the target oil field production increasing mode is the acidification production increasing mode, the acid fluid corresponding to the acidification production increasing mode is prepared by the oil field operation working condition equipment 206.

The embodiment of the invention provides a control method for preparing an oilfield operation reagent, which comprises the following steps: acquiring operation parameter information of an oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller judges whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the geological parameter information of the oilfield; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode; the central controller also controls the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the well site stratum parameter information of the current operation stratum; and based on the performance parameter information of the agent related to the yield increasing operation, the controlled adding device provides at least one target chemical additive corresponding to the target oil field yield increasing mode for the oil field operation working condition equipment, specifically, the agent required by the oil field operation field is automatically prepared under the control of the central controller 202 through the operation parameter information of the oil field operation field acquired by the field parameter acquisition equipment 208; wherein the operation parameter information includes: equipment identification information, oil field geological parameter information and well site formation parameter information of the oil field operation condition equipment 206; the central controller 202 is configured to determine, based on the device identification information, whether a current oilfield operation node is an oilfield stimulation operation node, and if the current oilfield operation node is the oilfield stimulation operation node, determine, based on oilfield geological parameter information, a target oilfield stimulation mode required by a target wellsite in the oilfield operation field, where the target oilfield stimulation mode further includes: the central controller 202 is further configured to control the oilfield operation condition equipment 206 to prepare a stimulation operation related reagent corresponding to the target oilfield stimulation mode based on wellsite formation parameter information of the current operation formation, and control the chemical addition device 204 to provide at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation condition equipment 206 based on performance parameter information of the stimulation operation related reagent, so that the required reagent is automatically prepared on the oilfield operation site according to oilfield wellsite geology and formation parameter information, and the flexibility of reagent preparation is improved.

Further, when the target oilfield production increase mode is a fracturing production increase mode, the oilfield operation condition equipment 206 needs to be controlled to automatically prepare the target fracturing fluid, that is, the oilfield operation condition equipment 206 is used as fracturing fluid mixing equipment to perform oilfield production increase operation, and the fracturing fluid mixing equipment is controlled by the central controller 202 to prepare the target fracturing fluid corresponding to the current well site stratum parameter information;

correspondingly, as shown in fig. 3, in step S108, based on the wellsite formation parameter information of the current operation formation, controlling the oilfield operation condition equipment to prepare a stimulation operation related reagent corresponding to the target oilfield stimulation mode specifically includes:

s1082, determining the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent which are required by a fracturing production increasing mode based on the well site stratum parameter information of the current operation stratum;

s1084, sending a first control signal to oilfield operation working condition equipment based on the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent, so that after the oilfield operation working condition equipment receives the first control signal, preparing a target fracturing fluid required by an oilfield production increasing operation node based on the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent, and conveying the target fracturing fluid to an oilfield operation site;

correspondingly, in the step S110, based on the performance parameter information of the agent related to the stimulation operation, the controlled chemical addition device provides at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation condition equipment, and specifically includes:

s1102, determining a first reagent type and a first additive amount of a target chemical additive required by a fracturing stimulation mode based on the performance parameter information of the target fracturing fluid;

and S1104, sending a second control signal to the chemical addition device based on the first reagent type and the first additive amount, so that the chemical addition device provides a chemical additive combination corresponding to the fracturing stimulation mode for the oilfield operation condition equipment based on the first reagent type and the first additive amount after receiving the second control signal.

In specific implementation, the control method in fig. 3 is executed by using the control system, specifically, the central controller 202 is specifically configured to determine, based on wellsite formation parameter information of a currently operating formation, a type of a dry powder raw material, a type of a powder solvent, an addition amount of the dry powder, and an addition amount of the powder solvent, which are required by the fracture stimulation mode, and send a first control signal to the oilfield operation condition device 206 based on the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder, and the addition amount of the powder solvent;

in specific implementation, the fracturing stimulation mode may include multiple fracturing processes corresponding to multiple target fracturing fluids, where the fracturing process is determined by different operation strata in a well site, the different operation strata have different well site stratum parameter information, each operation stratum corresponds to one fracturing process, the central controller 202 dynamically adjusts at least one of the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent based on the change condition of the well site stratum parameter information of the operation stratum, and dynamically adjusts a first control signal sent to the oilfield operation condition equipment 206 based on the adjusted type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent;

the oilfield operation condition equipment 206 is configured to, after receiving the first control signal, prepare a target fracturing fluid required by an oilfield stimulation operation node based on the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder, and the addition amount of the powder solvent, and deliver the target fracturing fluid to an oilfield operation site;

the central controller 202 is further specifically configured to determine a first reagent type and a first additive amount of the target chemical additive required by the fracture stimulation method based on the performance parameter information of the target fracturing fluid, and send a second control signal to the chemical additive device 204 based on the first reagent type and the first additive amount;

and the chemical adding device 204 is configured to, after receiving the second control signal, provide a chemical additive combination corresponding to the fracture stimulation mode for the oilfield operation condition equipment 206 based on the first reagent type and the first chemical adding amount.

In the embodiment provided by the invention, the first mixing device and the second mixing device are arranged, the required dry powder raw material is conveyed from the powder storage device to the first mixing device under the control of the central controller, the first solvent with a first flow rate and the second solvent with a second flow rate are respectively conveyed from the solvent suction device to the first mixing device and the second mixing device, the first mixing device mixes the dry powder raw material and the first solvent under the control of the central controller and conveys the obtained initial fracturing fluid to the second mixing device, the second mixing device mixes the initial fracturing fluid and the second solvent under the control of the central controller and conveys the obtained target fracturing fluid to the mixed fluid discharge device and discharges the target fracturing fluid to the stimulation operation site, thereby realizing the automatic preparation of the fracturing fluid required by the stimulation operation on the oil field operation site, therefore, the instant mixing and using of the fracturing fluid are realized, the configuration cost of the fracturing fluid is reduced, the first mixing device and the second mixing device are arranged, dry powder raw materials and a solvent can be fully mixed, powder in a water bag is eliminated, the aim of improving the performance of the fracturing fluid is fulfilled, meanwhile, the flexibility of setting the concentration ratio of the fracturing fluid is improved by adopting a mode of two-way output and two-time mixing of the solvent, the automatic addition of the corresponding chemical additive is controlled by automatically combining with the fracturing process requirements of fracturing fluid blending equipment according to the yield-increasing operation node of an oil field by arranging a chemical addition device, the workload of workers in the oil field operation is reduced, the addition accuracy of the chemical additive is improved, and meanwhile, the chemical additives required by all working condition equipment in the oil field operation are stored in the chemical additive storage device, so that the purpose that the same chemical additive addition equipment is automatically compatible with all working condition equipment in the whole flow of the oil field operation is achieved, need not to dispose respective chemical addition equipment for every oil field operating mode equipment respectively, simplified the control system framework that is used for the chemical addition of oil field operation, reduced the input cost of the chemical addition of oil field operation.

Further, when the target oilfield production increase mode is an acidification production increase mode, the oilfield operation condition equipment 206 needs to be controlled to automatically prepare the target acid liquid, that is, the oilfield operation condition equipment 206 is used as acid liquid mixing equipment to perform oilfield production increase operation, and the acid liquid mixing equipment is controlled by the central controller 202 to prepare the target acid liquid corresponding to the current wellsite stratum parameter information;

correspondingly, as shown in fig. 4, in step S108, based on the wellsite formation parameter information of the current operation formation, controlling the oilfield operation condition equipment to prepare a stimulation operation related reagent corresponding to the target oilfield stimulation mode specifically includes:

s1086, determining the type of acid liquor raw materials, the type of acid liquor solvent, the addition amount of the acid liquor raw materials and the addition amount of the acid liquor solvent required by an acidification yield-increasing mode based on the well site stratum parameter information of the current operation stratum;

s1088, sending a third control signal to the oilfield operation working condition equipment based on the type of the acid liquor raw material, the type of the acid liquor solvent, the acid liquor raw material addition amount and the acid liquor solvent addition amount, so that after the oilfield operation working condition equipment receives the third control signal, preparing a target acid liquor required by an oilfield production increase operation node based on the type of the acid liquor raw material, the type of the acid liquor solvent, the acid liquor raw material addition amount and the acid liquor solvent addition amount, and conveying the target acid liquor to an oilfield operation site;

s1106, determining a second reagent type and a second chemical additive amount of the target chemical additive required by the acidification yield-increasing mode based on the performance parameter information of the target acid liquor;

and S1108, sending a fourth control signal to the chemical addition device based on the second reagent type and the second chemical addition amount, so that the chemical addition device provides a chemical additive combination corresponding to the acidification and stimulation mode for the oilfield operation working condition equipment based on the second reagent type and the second chemical addition amount after receiving the fourth control signal.

In specific implementation, the control method shown in fig. 4 is executed by using the control system, and specifically, the central controller 202 is specifically configured to determine, based on wellsite formation parameter information of a currently-operated formation, a type of an acid raw material, a type of an acid solvent, an acid raw material addition amount, and an acid solvent addition amount required by the acidizing stimulation mode, and send a third control signal to the oilfield operation condition device 206 based on the type of the acid raw material, the type of the acid solvent, the acid raw material addition amount, and the acid solvent addition amount;

in specific implementation, the acidification yield increase mode may include multiple acidification processes corresponding to multiple target acid solutions, where the acidification processes are determined by different operation strata in the well site, the different operation strata have different well site stratum parameter information, each operation stratum corresponds to one acidification process, the central controller 202 dynamically adjusts at least one of the type of acid solution raw material, the type of acid solution solvent, the acid solution raw material addition amount, and the acid solution solvent addition amount based on the change condition of the well site stratum parameter information of the operation strata, and dynamically adjusts a third control signal sent to the oilfield operation condition equipment 206 based on the adjusted type of acid solution raw material, the type of acid solution solvent, the acid solution raw material addition amount, and the acid solution solvent addition amount;

the oilfield operation condition device 206 is configured to, after receiving the third control signal, prepare a target acid solution required by an oilfield production increase operation node based on the type of the acid solution raw material, the type of the acid solution solvent, the acid solution raw material addition amount, and the acid solution solvent addition amount, and deliver the target acid solution to an oilfield operation site;

the central controller 202 is further specifically configured to determine a second reagent type and a second chemical addition amount of the target chemical additive required by the acidification and stimulation manner based on the performance parameter information of the target acid solution, and send a fourth control signal to the chemical addition device 204 based on the second reagent type and the second chemical addition amount;

and the chemical adding device 204 is configured to, after receiving the fourth control signal, provide a chemical additive combination corresponding to the acidification and stimulation manner for the oilfield operation condition equipment 206 based on the second reagent type and the second chemical adding amount.

In the embodiment provided by the invention, by arranging the acid liquid raw material supply device, the acid liquid solvent supply device, the acid liquid mixing device and the acid liquid discharge device, under the control of the central controller, the first drive execution device controls the acid liquid raw material supply device to deliver the acid liquid raw material with a first flow rate to the acid liquid mixing device, and controls the acid liquid solvent supply device to deliver the acid liquid solvent with a second flow rate to the acid liquid mixing device, and under the control of the central controller, the acid liquid raw material with the first flow rate and the acid liquid solvent with the second flow rate are mixed in the acid liquid mixing device to obtain a mixed target acid liquid, and the target acid liquid is delivered to the acid liquid discharge device, the target acid liquid is delivered to an industrial site of oilfield operation by the acid liquid discharge device, namely the output of the acid liquid raw material and the acid liquid solvent is controlled by the first drive execution device, the acid liquor mixing device fully stirs acid liquor raw materials and an acid liquor solvent, and finally the acid liquor discharging device conveys target acid liquor to an oil field operation site, so that the required target acid liquor is automatically provided for a target acidification process on the oil field operation site, and the acid liquor is prepared and used immediately, so that the required acid liquor can be quantitatively mixed to achieve the supply and demand balance of the acid liquor, and the automatic addition of corresponding chemical additives is controlled by automatically combining with the acidification process requirements of acid liquor mixing equipment according to an oil field production increasing operation node through the arrangement of the chemical additive adding device, so that the workload of oil field operation workers is reduced, the addition accuracy of the chemical additives is improved, and meanwhile, the chemical additives required by all oil field operation working condition equipment are stored in the chemical additive storing device, so that the purpose that the same chemical additive adding device is compatible with all working condition equipment in the whole flow of automatic oil field operation is achieved, need not to dispose respective chemical addition equipment for every oil field operating mode equipment respectively, simplified the control system framework that is used for the chemical addition of oil field operation, reduced the input cost of the chemical addition of oil field operation.

Further, in a case where the target oilfield stimulation mode selected for the target well site of the current operation is the fracturing stimulation mode, the oilfield operation condition equipment 206 is used as a fracturing fluid blending equipment to perform oilfield stimulation operation, as shown in fig. 5, the oilfield operation condition equipment 206 includes: a powder storage device 302, a solvent storage device 304, a powder suction device 306, a solvent suction device 308, a first mixing device 310, a second mixing device 312, and a mixed liquid discharge device 314;

correspondingly, the S1084 sends a first control signal to the oilfield operation operating condition equipment based on the type of the dry powder raw material, the type of the powder solvent, the dry powder addition amount, and the powder solvent addition amount, so that after the oilfield operation operating condition equipment receives the first control signal, a target fracturing fluid required by the oilfield stimulation operation node is prepared based on the type of the dry powder raw material, the type of the powder solvent, the dry powder addition amount, and the powder solvent addition amount, and the target fracturing fluid is delivered to the oilfield operation site, specifically including:

step one, after receiving the first control signal, the oilfield operation condition device 206 controls the powder suction device 306 to deliver the required dry powder raw material to the first mixing device 310 from the powder storage device 302 according to the type of the dry powder raw material and the amount of the dry powder added; and the number of the first and second groups,

a second step of controlling the solvent suction device 308 to respectively supply a first solvent having a first flow rate and a second solvent having a second flow rate from the solvent storage device 304 to the first mixing device 310 and the second mixing device 312 according to the type of the powdered material solvent and the amount of the powdered material solvent to be added; and the number of the first and second groups,

mixing the dry powder raw material and the first solvent by controlling the first mixing device 310, and conveying the obtained initial fracturing fluid to the second mixing device 312; and the number of the first and second groups,

and step four, mixing the initial fracturing fluid and the second solvent by controlling the second mixing device 312, and delivering the obtained target fracturing fluid to the mixed fluid discharge device 314, so that the mixed fluid discharge device 314 discharges the target fracturing fluid to an oil field operation site.

In fig. 5, the powder storage device 302 is connected to the first mixing device 310 through the powder suction device 306, the solvent storage device 304 is connected to the first mixing device 310 through a first output channel of the solvent suction device 308, and the solvent storage device 304 is further connected to the second mixing device 312 through a second output channel of the solvent suction device 308;

the powder suction means 306 for feeding a desired dry powder material from the powder storage means 302 to the first mixing means 310 according to the type of the dry powder material and the amount of the dry powder to be added under the control of the central controller 202; the addition amount of the target dry powder raw material may be determined by the central controller 202 in a manner of adding in a ratio by one thousand, in a manner of adding in a percentage, or in a manner of adding in a flow rate.

In practical implementation, the powder inhalation device 306 may include: the driving device can be any one of pure electric driving, engine driving and electric driving, and controls the addition amount of target dry powder by driving the rotating speed of the spiral conveying device; further, a weighing and metering device may be disposed below the powder storage device 302, and configured to monitor an actual addition amount of the target dry powder, and transmit a first indication signal for indicating the actual addition amount to the central controller 202, and when it is determined based on the first indication signal that a difference between the actual addition amount of the target dry powder and the target addition amount of the target dry powder is greater than a preset threshold, the central controller 202 sends a corresponding control signal to the screw conveyor, so that the screw conveyor adjusts a conveying rotation speed based on the control signal, so as to correct the actual addition amount of the target dry powder raw material conveyed to the first mixing device 310; further, a rotation speed metering device is further arranged on the spiral conveying device and used for monitoring the actual rotation speed of the spiral conveying device and transmitting a second indicating signal for indicating the actual rotation speed to the central controller 202, the central controller 202 judges whether the addition amount of the dry powder is within a preset controllable range or not based on the second indicating signal, and if not, the actual rotation speed of the spiral conveying device is continuously adjusted; the powder storage device 302 may include at least one container for storing various types of dry powder materials required for preparing the target fracturing fluid; further, a butterfly valve device is arranged below the container of the powder storage device 302, the butterfly valve device is connected with the central controller 202 through a driving device, and the driving device controls the opening of the butterfly valve by receiving a dry powder raw material adding signal sent by the central controller 202;

the solvent suction device 308 for supplying a first solvent having a first flow rate and a second solvent having a second flow rate to the first mixing device 310 and the second mixing device 312, respectively, from the solvent storage device 304 according to the type of the powdered solvent and the amount of the powdered solvent to be added, under the control of the central controller 202; the target solvent addition amount may be determined by the central controller 202 using a thousandth ratio addition manner, a percentage addition manner, or a flow rate addition manner.

In a specific implementation, the solvent suction device 308 may include: the device comprises a driving device and an executing device, wherein the driving device can be driven by any one of pure electric, engine and electric driving liquid, the executing device can be a volume device or other executing devices, and the driving device controls the adding amount of a target powder solvent by driving the rotating speed of the executing device; the solvent storage device 304 may include at least one container for storing various types of powder solvents required for preparing the fracturing fluid; further, an output port of the solvent suction device 308 is also provided with a flow sensor for monitoring the total output flow of the powder solvent and providing a flow basis for the proportion of the dry powder raw material added by the powder suction device 306;

the first mixing device 310 for mixing the dry powder material and the first solvent under the control of the central controller 202 and delivering the obtained initial fracturing fluid to the second mixing device 312;

the second mixing device 312 is configured to mix the initial fracturing fluid and the second solvent under the control of the central controller 202, and to deliver the obtained target fracturing fluid to the mixed fluid discharge device 314;

the mixed liquid discharge device 314 is used for discharging the target fracturing liquid to an oil field operation site.

In a specific implementation, the mixed liquid discharge device 314 may include a driving device and an execution device, the driving device may be any one of pure electric driving, engine driving and electric driving, and the driving device controls the discharge amount of the target fracturing liquid by driving the rotation speed of the execution device; further, the execution device is further provided with a pressure sensor for monitoring the discharge pressure of the target fracturing fluid and transmitting a third indication signal for indicating the discharge pressure to the central controller 202, the central controller 202 judges whether the discharge pressure of the target fracturing fluid is within a preset pressure range based on the third indication signal, the outlet of the execution device is further provided with a flow sensor for monitoring the discharge flow rate of the target fracturing fluid and transmitting a fourth indication signal for indicating the discharge flow rate to the central controller 202, and the central controller 202 judges whether the discharge flow rate of the target fracturing fluid is within the preset flow rate range based on the fourth indication signal;

further, in consideration of the fact that the dry powder raw material needs to be added into the powder solvent for direct mixing during the preparation of the fracturing fluid, the dry powder raw material and the powder solvent are likely to be insufficiently mixed in the primary mixing process, which may cause the phenomenon of powder-in-water, and further, the viscosity of the fracturing fluid is likely to be reduced, thereby reducing the performance of the fracturing fluid, as shown in fig. 6, the first mixing device 310 includes: a premix blender 3102, venturi injectors 3104 and booster pumps 3106;

correspondingly, in the third step, the first mixing device 310 is controlled to mix the dry powder raw material and the first solvent, and the obtained initial fracturing fluid is conveyed to the second mixing device 312, which specifically includes:

controlling the pressurizing pump 3106 to pressurize the first solvent fed from the solvent suction device 308 through the first delivery channel, and to feed the pressurized first solvent to the premixing agitator 3102 through a first branch channel 3108 at a third flow rate and to the venturi injector 3104 through a second branch channel 3110 at a fourth flow rate; and the number of the first and second groups,

premixing the dry powder raw material and the first solvent with the third flow rate by controlling the premixing stirrer 3102 to obtain a premixed fracturing fluid; and the number of the first and second groups,

the premixed fracturing fluid is sucked by controlling the venturi injector 3104, and the premixed fracturing fluid is sufficiently mixed with the first solvent having the fourth flow rate, and the obtained initial fracturing fluid is transferred to the second mixing device 312.

In fig. 6, the booster pump 3106 is connected to the premixing agitator 3102 through a first branch passage 3108 and to the venturi injector 3104 through a second branch passage 3110;

specifically, the booster pump 3106 is configured to boost the first solvent, which is delivered from the solvent suction device 308 through the first delivery passage, under the control of the central controller 202, and deliver the boosted first solvent to the premixing agitator 3102 through a first branch passage 3108 at a third flow rate and to the venturi injector 3104 through a second branch passage 3110 at a fourth flow rate; the pipeline of the first output channel is a fixed pipeline, and the pressure value of the booster pump 3106 is set within the pipeline pressure value range of the first output channel; the first solvent delivered by the solvent suction device 308 is pressurized by the pressurizing pump 3106, so that a part of the pressure required by the solvent suction device 308 to deliver the first solvent can be shared, and the total power consumption of the solvent suction device 308 can be reduced;

the premixing agitator 3102 for premixing the dry powder raw material and the first solvent having the third flow rate under the control of the central controller 202 to obtain a premixed fracturing fluid;

the venturi ejector 3104, which sucks the premixed fracturing fluid, sufficiently mixes the premixed fracturing fluid with the first solvent having the fourth flow rate, and conveys the obtained initial fracturing fluid to the second mixing device 312; further, a valve is arranged at the inlet of the venturi ejector 3104 to prevent the solvent from flowing back when the pressure is insufficient;

specifically, the feed inlet of the premixing stirrer 3102 is connected to the powder suction device 306, and the discharge outlet of the premixing stirrer 3102 is connected to the venturi ejector 3104; further, when the dry powder raw material enters from the feed inlet of the pre-mixer 3102, the pressurized first solvent enters the pre-mixer 3102 from the first branch channel 3108 at the same time according to the third flow rate, and the pre-mixed fracturing fluid is obtained at the position of the pre-mixer 3102 close to the discharge port, when the first solvent with the fourth flow rate flowing at a high speed passes through the venturi injector 3104, the generated negative pressure will suck the pre-mixed fracturing fluid from the pre-mixer 3102 into the venturi injector 3104 through the connection port, so as to provide the flow-assisting and re-mixing for the pre-mixed fracturing fluid, and re-mix with the first solvent with the fourth flow rate flowing at a high speed, thereby fully eliminating the powder-in-water, and further forming the initial fracturing fluid.

Further, in order to increase the viscosity of the initial fracturing fluid and improve the performance of the fracturing fluid, the initial fracturing fluid is mixed with a second solvent for a second time, and based on this, as shown in fig. 6, the second mixing device 312 includes: a secondary mixing diffuser 3122 and a fracturing fluid mixing tank 3124;

correspondingly, in the fourth step, the second mixing device 312 is controlled to mix the initial fracturing fluid and the second solvent, and the obtained target fracturing fluid is conveyed to the mixed liquid discharge device 314, which specifically includes:

mixing the initial fracturing fluid with a second solvent conveyed by a solvent suction device 308 through a second output channel by controlling the secondary mixing diffuser 3122, and conveying the obtained target fracturing fluid to the fracturing fluid mixing tank 3124;

the target fracturing fluid is temporarily stored by controlling the fracturing fluid mixing tank 3124, and is delivered to the mixed fluid discharge device 314.

Specifically, the secondary mixing diffuser 3122 is configured to mix the initial fracturing fluid and the second solvent under the control of the central controller 202, and to deliver the obtained target fracturing fluid to the fracturing fluid mixing tank 3124;

the fracturing fluid mixing tank 3124 is configured to temporarily store the target fracturing fluid and deliver the target fracturing fluid to the mixed fluid discharge device 314;

further, in order to ensure the instantaneity of the fracturing fluid during use, on the basis, the fracturing fluid mixing tank 3124 further includes: a plurality of mixed liquid chambers arranged in sequence;

specifically, each mixed liquid chamber is configured to temporarily store the target fracturing liquid output by the secondary mixing diffuser 3122, and open a valve of at least one mixed liquid chamber under the control of the central controller 202, so as to deliver the target fracturing liquid to the mixed liquid discharge device 314;

wherein, a plurality of mixed liquid chambers can be realized by arranging baffles in the fracturing liquid mixing tank 3124; specifically, a plurality of baffles are arranged in the fracturing fluid mixing tank 3124, and the target fracturing fluid flows through the baffles in sequence, so that first-in first-out of the target fracturing fluid is realized, and the instantaneity of the use of the fracturing fluid is ensured;

further, still be provided with the agitator device in the fracturing fluid blending tank 3124 for improve fracturing fluid viscosity, still be provided with liquid level measurement device, be used for monitoring real-time liquid level.

Further, in order to flexibly control the amount of the powder solvent required for the target fracturing fluid, in fig. 6, the fracturing fluid blending equipment further includes: the second output channel is also provided with a flow control device 402;

the flow control device 402 is configured to regulate the delivery of the second solvent having a second flow rate from the solvent intake device 308 to the second mixing device 312 via the second output channel under the control of the central controller 202. Specifically, the flow control device 402 is a valve-type actuator;

further, in order to improve the accuracy of the flow rate control of the second solvent, the flow rate control device 402 further includes: a flow sensor disposed at the flow control device 402;

the flow sensor is configured to collect a solvent flow signal of the second solvent, which is sent from the solvent suction device 308 to the second mixing device 312 through the second output channel, and send the solvent flow signal to the central controller 202;

the central controller 202 is further configured to determine whether the flow rate of the second solvent delivered through the second output channel is within a first preset range based on the solvent flow rate signal.

The flow sensor can be any one of an electromagnetic flowmeter, a mass flowmeter and a turbine flowmeter for measuring the flow; specifically, a flow sensor is arranged at an actual output port of the flow control device 402, so as to monitor the actual flow of the second solvent in real time, and compare the actual flow with the target flow, so as to identify whether the flow of the target solvent is within a preset flow range; the flow rate of the target solvent is determined based on parameters of the target fracturing fluid, so that the actual flow rate of the target solvent is accurately controlled.

Specifically, the central controller 202 also determines an instantaneous flow rate and/or an accumulated flow rate of the target solvent based on the received flow rate output signal and transmits the instantaneous flow rate and/or the accumulated flow rate of the target solvent to a display device, which dynamically displays the instantaneous flow rate and/or the accumulated flow rate of the target solvent.

Further, in order to improve the pressure control accuracy of the solvent suction device 308 and/or the booster pump 3106, the control apparatus further includes: a first pressure sensor provided at the solvent suction device 308 and/or a second pressure sensor provided at the booster pump 3106;

the first pressure sensor is used for acquiring a total pressure signal of the first solvent conveyed from the solvent suction device 308 to the first mixing device 310 and the second solvent conveyed to the second mixing device 312, and sending the total pressure signal to the central controller 202;

the second pressure sensor is used for acquiring a fracturing fluid pressure signal of the initial fracturing fluid conveyed from the booster pump 3106 to the second mixing device 312 and sending the fracturing fluid pressure signal to the central controller 202;

the central controller 202 is configured to determine whether the suction amount of the solvent is within a second preset range based on the total pressure signal, and/or determine whether the pressure of the pressurizing pump 3106 is within a third preset range based on the fracture fluid pressure signal.

Considering that the preparation process of the target fracturing fluid may be matched with other related working condition equipment (such as sand mixing equipment) to complete oilfield stimulation operation, the preparation process of the target fracturing fluid not only considers wellsite formation parameter information, but also needs to refer to different acquired flow signals of the related working condition equipment so as to jointly determine a fracturing process adopted by the oilfield stimulation operation, and further determine reagent parameter information of the target fracturing fluid to be prepared, namely the central controller 202, which is specifically used for controlling the oilfield working condition equipment 206 to prepare a stimulation operation related reagent corresponding to the target oilfield stimulation mode based on the wellsite formation parameter information of the current working formation and the flow signals of the related working condition equipment; the reagent parameter information of the target fracturing fluid can be any one of the type of a dry powder raw material, the type of a powder solvent, the addition amount of dry powder, the addition amount of the powder solvent and the proportion of the target fracturing fluid, which are required by the target fracturing fluid. Further, the relevant operating condition equipment may be sand mixing equipment, the central controller 202 may implement the linkage control of the sand mixing equipment and the fracturing fluid mixing equipment by communicating with the sand mixing equipment or measuring an actual physical signal of the sand mixing equipment, specifically, after the central controller 202 receives a corresponding signal provided by the sand mixing equipment, the central controller 202 calculates and resolves a flow value required by the fracturing fluid mixing equipment based on the signal, and sends a corresponding flow control signal to the fracturing fluid mixing equipment to control the requirement of the fracturing fluid mixing equipment for automatically matching the flow, thereby completing the automatic preparation of the fracturing fluid. Further, in the working process of the fracturing fluid blending equipment, the central controller 202 can also control the fracturing process according to the requirements of the fracturing process by a formula control method, automatically call corresponding formulas according to the requirements of the fracturing process flow, and distribute the corresponding formulas to the subsystems to complete the preparation of the fracturing fluid.

In specific implementation, the central controller 202 determines a corresponding target fracturing process based on the wellsite formation parameter information acquired by the field parameter acquisition device 208, determines the type of a target dry powder raw material and/or a target powder solvent to be added based on the type parameter of the dry powder raw material and/or the powder solvent required by the target fracturing fluid corresponding to the target fracturing process, and determines a target container where the target dry powder raw material and/or the target powder solvent to be opened is located according to the type of the target dry powder raw material and/or the target powder solvent to be added; wherein, the type of the dry powder raw material can be a thickening agent for improving the viscosity of the fracturing fluid, such as guar powder, and the type of the powder solvent can be clear water capable of dissolving the thickening agent; the central controller 202 also determines the addition proportion of the target dry powder raw material and/or the target powder solvent based on the proportioning parameters of the target fracturing fluid; determining the addition amount of a target powder solvent based on the preparation amount required by the target fracturing fluid, and further determining the addition amount of target dry powder by the central controller 202 according to the addition amount of the target powder solvent and the ratio of the target fracturing fluid; specifically, the central controller 202 controls the powder suction device 306 to deliver the required dry powder material from the powder storage device 302 to the first mixing device 310; the solvent suction device 308 delivers a first solvent having a first flow rate and a second solvent having a second flow rate from the solvent storage device 304 to the first mixing device 310 and the second mixing device 312, respectively, under the control of the central controller 202; the first mixing device 310 mixes the dry powder raw material and the first solvent under the control of the central controller 202, and delivers the obtained initial fracturing fluid to the second mixing device 312; the second mixing device 312 mixes the initial fracturing fluid and the second solvent under the control of the central controller 202, and delivers the obtained target fracturing fluid to the mixed fluid discharge device 314, and discharges the target fracturing fluid to the oilfield stimulation operation site. Further, since the first output channel where the first solvent with the first flow rate is located is a fixed pipeline, the first flow rate is a fixed flow rate, the central controller 202 determines a second flow rate of the second solvent on the second output channel based on the addition amount of the target powder solvent, that is, the flow rate of the solvent suction device 308 and the first flow rate, and sends a corresponding flow rate control signal to the flow rate control device 402; the flow control device 402 may form closed-loop automatic control by combining with the flow measured by the solvent suction device 308, or may realize automatic control with a liquid level sensor in the fracturing fluid mixing tank 3124;

further, in consideration of the process that the flow control device 402 delivers the second solvent with the second flow rate from the solvent suction device 308 to the fracturing fluid mixing tank 3124 in the second mixing device 312, the flow control device 402 delivering the second solvent with the second flow rate may be controlled in a flow control manner and a liquid level control manner; specifically, the central controller 202 judges whether a difference value between a target liquid level and an actual liquid level in the fracturing liquid mixing tank 3124 is greater than a preset threshold value based on a set target level value and a real-time liquid level signal acquired by a liquid level sensor, and if so, the central controller 202 sends a liquid level control signal to the flow control device 402, so that the flow control device 402 adjusts the opening size of the solvent output port based on the liquid level control signal to adjust the size of the second flow, thereby making the liquid level in the fracturing liquid mixing tank 3124 reach the target level value; the central controller 202 further determines whether a difference between the real-time flow rate of the solvent suction device and the real-time flow rate of the flow control device 402 is greater than a preset threshold value based on the real-time flow rate signal of the flow control device 402 acquired by the flow sensor, if so, the central controller 202 sends a flow control signal to the solvent suction device 308, and the flow control device 402 adjusts the flow rate of the second solvent delivered to the flow control device 402 based on the flow control signal, so that the difference between the real-time flow rate of the solvent suction device and the real-time flow rate of the flow control device 402 is smaller than the preset threshold value.

Furthermore, considering the process of delivering the target fracturing fluid to the oilfield operation site by the mixed liquid discharge device 314, any one of pressure control, flow control and liquid level control can be selected to control the discharge of the fracturing fluid of the mixed liquid discharge device 314; specifically, the central controller 202 determines a target fracturing fluid discharge control mode based on the type of the target fracturing fluid receiving device; in specific implementation, if the type of the target fracturing fluid receiving device is a fracturing pump truck or a sand mixing device, the target fracturing fluid discharge control mode is a pressure control mode, and if the type of the target fracturing fluid receiving device is a fracturing fluid buffer tank, the target fracturing fluid discharge control mode is a flow control mode or a liquid level control mode;

correspondingly, if the target fracturing fluid discharge control mode is a pressure control mode, the central controller 202 judges whether a difference between the target pressure and the actual pressure is greater than a preset threshold value based on a target pressure value of the target fracturing fluid discharged by the mixed fluid discharge device 314 and a real-time pressure signal collected by the pressure sensor, and if the difference is greater than the preset threshold value, the central controller 202 sends a pressure control signal to the mixed fluid discharge device 314 so that the mixed fluid discharge device 314 adjusts the rotating speed based on the pressure control signal, and the discharge pressure of the mixed fluid discharge device 314 reaches the target pressure value;

correspondingly, if the target fracturing fluid discharge control mode is a flow control mode, the central controller 202 judges whether a difference between a target flow and an actual flow is greater than a preset threshold value based on a target flow value of the target fracturing fluid discharged by the mixed liquid discharge device 314 and a real-time flow signal collected by a flow sensor, and if the difference is greater than the preset threshold value, the central controller 202 sends a flow control signal to the mixed liquid discharge device 314 so that the mixed liquid discharge device 314 adjusts the rotating speed based on the flow control signal, and the discharge flow of the mixed liquid discharge device 314 reaches the target flow value;

correspondingly, if the target fracturing fluid discharge control mode is a liquid level control mode, the central controller 202 judges whether a difference value between a target liquid level and an actual liquid level is greater than a preset threshold value or not based on a target liquid level value of the target fracturing fluid in the fracturing fluid mixing tank 3124 and a real-time liquid level signal collected by a liquid level sensor arranged at the fracturing fluid mixing tank 3124, if so, the central controller 202 sends a liquid level control signal to the mixed liquid discharge device 314, so that the mixed liquid discharge device 314 adjusts the rotating speed based on the liquid level control signal, and the liquid level in the fracturing fluid mixing tank 3124 reaches the target liquid level value; the target liquid level expected to be reached in the fracturing liquid mixing tank 3124 is set in the central controller 202 in advance, and in the process of preparing the target fracturing liquid, an actual liquid level signal in the fracturing liquid mixing tank 3124 is measured in real time by a liquid level sensor arranged at the fracturing liquid mixing tank 3124 and fed back to the central controller 202, and the central controller 202 controls the flow rate of the fracturing liquid sucked and discharged from the fracturing liquid mixing tank 3124 by the mixed liquid discharge device 314 based on the actual liquid level signal and the target liquid level, so that closed-loop control of the liquid level of the fracturing liquid in the fracturing liquid mixing tank 3124 is formed; and because the discharge of the target fracturing fluid is controlled by adopting a liquid level control mode, the discharge amount of the fracturing fluid of the mixed liquid discharge device 314 is only required to be adjusted, the flow of the solvent suction device 308 is not required to be adjusted, so that the flow of the solvent suction device 308 is stable, and the total powder suction amount is stable, thereby ensuring the adding precision of the dry powder raw material, improving the proportioning precision of the initial fracturing fluid, reducing excessive program operation and improving the stability of automatic control of equipment.

Further, in a case where the target oilfield stimulation mode selected for the target well site of the current operation is an acidification stimulation mode, the oilfield operation condition device 206 performs oilfield stimulation operation as an acid solution blending device, as shown in fig. 7, the oilfield operation condition device 206 includes: an acid solution raw material supply device 502, an acid solution solvent supply device 504, a first drive execution device 506, an acid solution mixing device 508, and an acid solution discharge device 510;

correspondingly, in the step S1088, a third control signal is sent to the oilfield operation operating condition device based on the type of the acid solution raw material, the type of the acid solution solvent, the acid solution raw material addition amount, and the acid solution solvent addition amount, so that after the oilfield operation operating condition device receives the third control signal, a target acid solution required by the oilfield production increase operation node is prepared based on the type of the acid solution raw material, the type of the acid solution solvent, the acid solution raw material addition amount, and the acid solution solvent addition amount, and the target acid solution is delivered to the oilfield operation site, which specifically includes:

after receiving the third control signal, the oilfield operation condition device 206 controls the acid solution raw material supply device 502 to supply the acid solution raw material to the acid solution mixing device 508 at a first flow rate according to the type of the acid solution raw material and the acid solution raw material addition amount by controlling the first driving execution device 506, and controls the acid solution solvent supply device 504 to supply the acid solution solvent to the acid solution mixing device 508 at a second flow rate according to the type of the acid solution solvent and the acid solution solvent addition amount; and the number of the first and second groups,

and step two, mixing the acid liquor raw material with the first flow rate and the acid liquor solvent with the second flow rate by controlling the acid liquor mixing device 508 to obtain a mixed target acid liquor, and delivering the target acid liquor to the acid liquor discharging device 510, so that the acid liquor discharging device 510 delivers the target acid liquor to the oilfield operation site.

In fig. 7, one end of the first driving actuator 506 is connected to the central controller 202, the other end of the first driving actuator 506 is connected to the acid material supplier 502 and the acid solvent supplier 504, the reagent outlets of the acid material supplier 502 and the acid solvent supplier 504 are connected to the reagent inlet of the acid mixer 508, and the reagent outlet of the acid mixer 508 is connected to the reagent inlet of the acid discharger 510;

specifically, the first driving actuator 506 is configured to control the acid material supplier 502 to supply the acid material to the acid mixer 508 with a first flow rate according to the type of the acid material and the acid material addition amount under the control of the central controller 202, and control the acid solvent supplier 504 to supply the acid solvent to the acid mixer 508 with a second flow rate according to the type of the acid solvent and the acid solvent addition amount;

the acid liquid mixing device 508 is configured to mix the acid liquid raw material with the first flow rate and the acid liquid solvent with the second flow rate under the control of the central controller 202 to obtain a mixed target acid liquid, and to deliver the target acid liquid to the acid liquid discharging device 510;

the acid liquid discharging device 510 is used for delivering the target acid liquid to the oilfield operation site. In an implementation, the acid solution discharging device 510 may include: the acid liquor discharge device comprises a driving device and an executing device, wherein the driving device can be driven by any one of direct motor driving, diesel driving and electric driving, the executing device can be a volume device or other executing devices, and the driving device controls the discharge amount of target acid liquor by driving the rotating speed of the executing device;

further, when the acid solution discharging device 510 discharges the target acid solution, the target acid solution may be discharged to a buffer tank, and the prepared acid solution is stored, or the target acid solution may be directly discharged to an acidification pump truck and discharged to an oilfield operation site by the acidification pump truck.

Further, the acid material supply device 502 includes an acid material storage device, an acid material suction device, and a first flow rate adjustment device; the acid solution supply device 504 comprises an acid solution storage device 304, an acid solution suction device 308, and a second flow rate adjusting device; wherein, one end of the acid liquor raw material suction device is connected with the acid liquor raw material storage device, and the other end is connected with the acid liquor mixing device 508 through the first flow regulating device; one end of the acid solution solvent suction device 308 is connected to the acid solution solvent storage device 304, and the other end is connected to the acid solution mixing device 508 through a second flow rate adjusting device; the first driving actuator 506 has one end connected to the central controller 202 and the other end connected to the acid material suction device, the first flow rate adjustment device, the acid solvent suction device 308, and the second flow rate adjustment device.

In specific implementation, the acid material suction device and the acid solvent suction device 308 may be a pump-type device or other execution devices; the first flow regulating device and the second flow regulating device can be any one of various actuating mechanisms of pneumatic drive regulation, electric drive regulation and hydraulic drive regulation; the driving mode of the first driving execution device 506 can be any one of direct motor driving, diesel driving and liquid driving and electric driving; specifically, the first driving actuator 506 controls the adding pressure of the acid liquid raw material and the acid liquid solvent by driving the acid liquid raw material suction device and the acid liquid solvent suction device 308; the first driving actuator 506 also controls the addition flow rates of the acid material and the acid solvent by driving the first flow rate adjusting device and the second flow rate adjusting device.

The concentration of the target acid liquor is determined according to different target acidification processes in oilfield operation, specifically, the target acidification process can be any one of acid washing, matrix acidification and fracturing acidification, and can be related to a stratum structure and at least one of operation parameters and equipment models of oilfield production increasing working condition equipment, and the concentrations of the acid liquor required by different acidification processes are different; therefore, in the preparation process of the target acid liquid, well site formation parameter information is considered, and at least one of operation parameters and equipment models of equipment under the oil field production increasing working condition needs to be referred to, so that an acidification process adopted by oil field production increasing work is jointly determined, and further reagent parameter information of the target acid liquid to be prepared, namely the central controller 202, is specifically used for controlling the equipment 206 under the oil field working condition to prepare a production increasing work related reagent corresponding to the target oil field production increasing mode based on the well site formation parameter information of the current working formation and the operation parameters and equipment models of the equipment 206 under the oil field working condition.

Specifically, the central controller 202 controls the acid material supply device 502 to supply the acid material with a first flow rate to the acid mixing device 508 and controls the acid solvent supply device 504 to supply the acid solvent with a second flow rate to the acid mixing device 508 based on a concentration parameter of the target acid solution required by the target acidification process; the acid liquid mixing device 508 mixes the acid liquid raw material with a first flow rate and the acid liquid solvent with a second flow rate under the control of the central controller 202 to obtain a mixed target acid liquid, and conveys the target acid liquid to the acid liquid discharging device 510; and then the acid liquor discharging device 510 delivers the target acid liquor to the industrial site of the oilfield operation.

Specifically, the addition amount of the acid solution raw material and/or the acid solution solvent of the target acid solution may be determined by a thousandth ratio addition manner, a percentage addition manner, or a flow addition manner.

Further, in order to sufficiently mix the acid solution raw material and the acid solution solvent, the acid solution mixing device 508 includes: the device comprises a closed mixing tank, a stirrer and a liquid level sensor;

correspondingly, in the second step, the controlling the acid liquid mixing device 508 to mix the acid liquid raw material with the first flow rate and the acid liquid solvent with the second flow rate to obtain a mixed target acid liquid, and the delivering the target acid liquid to the acid liquid discharging device 510 specifically includes:

mixing the acid solution raw material having the first flow rate and the acid solution solvent having the second flow rate by controlling the closed mixing tank to obtain an initial target acid solution, and transferring the target acid solution stirred by the stirrer to the acid solution discharge device 510;

fully stirring the acid liquor raw material and the acid liquor solvent in the closed mixing tank by controlling the stirrer to obtain a final target acid liquor;

detecting a liquid level signal of the mixed target acid liquid in the closed mixing tank by controlling the liquid level sensor; the liquid level signal is used for judging whether the liquid level of the target acid liquid in the closed mixing tank is within a preset controllable range.

Specifically, the closed mixing tank is configured to mix the acid solution raw material having the first flow rate and the acid solution solvent having the second flow rate under the control of the central controller 202 to obtain an initial target acid solution, and to deliver the target acid solution stirred by the stirrer to the acid solution discharge device 510;

the stirrer is used for fully stirring the acid liquor raw material and the acid liquor solvent in the closed mixing tank under the control of the central controller 202 to obtain a final target acid liquor;

the liquid level sensor is configured to detect a liquid level signal of the target acid solution mixed in the closed mixing tank, and transmit the liquid level signal to the central controller 202;

the central controller 202 is configured to receive the liquid level signal of the target acid solution, and determine whether the liquid level of the target acid solution in the closed mixing tank is within a preset controllable range based on the liquid level signal.

In specific implementation, the central controller 202 may determine a target liquid level expected to be reached by the target acid liquid in the closed mixing tank according to the concentration value of the target acid liquid, determine whether a difference between the target liquid level and an actual liquid level currently reached by the target acid liquid determined based on a liquid level signal acquired by the liquid level sensor is smaller than a preset threshold, and if so, determine that the liquid level of the target acid liquid in the closed mixing tank is within a preset controllable range, where the concentration value of the target acid liquid is determined based on a currently selected target acidification process; if not, determining that the liquid level of the target acid liquid in the closed mixing tank is not within a preset controllable range, and automatically adjusting the opening size of the first flow regulating device and/or the second flow regulating device according to the target liquid level so as to enable the target acid liquid to reach a required concentration value, wherein the liquid level sensor detects a liquid level signal in the closed mixing tank in real time, transmits the liquid level signal to the central controller 202, and judges whether the liquid level of the target acid liquid is within the preset controllable range or not based on the liquid level signal; further, the central controller 202 is further configured to determine whether the liquid level of the target acid solution is lower than a lowest preset liquid level value, and if so, send an early warning signal to the acid solution discharging device 510, so that the acid solution discharging device 510 stops working, thereby playing a role in protecting the acid solution discharging device 510.

Further, in consideration of a large amount of acid gas generated during the acid solution preparation, the acid solution mixing device 508 further includes: the spraying pipe is arranged at the acid gas output port of the closed mixing tank;

the spray pipe is used for preliminarily eliminating acid gas discharged when the acid liquor raw material and the acid liquor solvent are mixed in the closed mixing tank. Specifically, the spray pipe may be connected to the top of the closed mixing tank from the output port of the acid solution storage device 304, so as to perform an elimination process on the acid gas in the closed mixing tank.

Further, in order to effectively eliminate a large amount of acid gas generated during the acid solution preparation and prevent the acid gas from causing harm to people and polluting environment, as shown in fig. 8, the oil field operation condition device 206 further includes: an acid gas elimination device 602; the acid gas elimination device 602 is disposed at the acid gas outlet of the acid liquid mixing device 508;

the acid gas removing device 602 is configured to remove the acid gas discharged by the acid liquid mixing device 508 when mixing the acid liquid raw material and the acid liquid solvent.

Specifically, the acid gas removal device 602 includes: a circulation device 6022, a negative pressure device 6024, an aeration device 6026, and an acid-base neutralization tank 6028;

the above circulation device 6022 is used for sucking the alkaline liquid from the acid-base neutralization tank 6028 and circularly conveying the alkaline liquid to the negative pressure device 6024 and the explosion device 6026 under the control of the central controller 202, and in a specific implementation, the above circulation device 6022 may include: the driving device can be any one of direct motor driving, diesel driving and electric driving, the executing device can be circulating pump equipment or other executing equipment, and the driving device controls the suction of the alkaline liquid through the rotating speed of the driving executing device;

the negative pressure device 6024 is configured to adsorb the acid gas discharged from the acid gas discharge port of the acid liquid mixing device 508, and neutralize the acid gas once based on the alkaline liquid conveyed by the circulation device 6022 to obtain a first residual acid gas, in a specific implementation, the negative pressure device 6024 may be a venturi tube type structure, the circulation device 6022 sucks the alkaline liquid from the acid-base neutralization tank 6028 to form a pressure, and the negative pressure device 6024 generates a negative pressure to adsorb and flow the acid gas;

the gas explosion device 6026 is configured to perform gas explosion treatment on the first residual acid gas conveyed by the negative pressure device 6024 to obtain an acid gas after gas explosion, and perform secondary neutralization on the acid gas after gas explosion based on the alkaline liquid conveyed by the circulating device 6022 to obtain a second residual acid gas; in specific implementation, the gas explosion device 6026 converts large bubbles into small bubbles, and then conveys the small bubbles to the acid-base neutralization tank 6028 for reaction.

The acid-base neutralization tank 6028 is provided to neutralize the second residual acid gas three times based on the pre-stored basic liquid to sufficiently eliminate the acid gas.

Further, in order to improve the accuracy of flow control of the acid liquid mixing device, the acid liquid mixing device further includes: a flow sensor; the flow sensor is arranged at least one reagent output port of the acid liquor raw material supply device 502, the acid liquor solvent supply device 504 and the acid liquor discharge device 510;

the flow sensor is configured to detect a flow signal of at least one of the acid solution raw material, the acid solution solvent, and the target acid solution, and transmit the flow signal to the central controller 202;

the central controller 202 is configured to receive the flow signal, and determine whether at least one of a flow rate of the acid liquid raw material, a flow rate of the acid liquid solvent, and a flow rate of the target acid liquid is within a preset flow rate range based on the flow signal; if not, an abnormal warning signal is sent out, or at least one of the flow of the acid liquor raw material, the flow of the acid liquor solvent and the flow of the target acid liquor is adjusted.

Further, in order to improve the pressure control accuracy of the acid mixing device, the acid mixing device further includes a pressure sensor disposed at least one of the acid raw material supply device 502, the acid solvent supply device 504, and the acid discharge device 510;

the pressure sensor is configured to detect a pressure signal of at least one of the acid solution raw material, the acid solution solvent, and the target acid solution, and transmit the pressure signal to the central controller 202;

the central controller 202 is configured to receive the pressure signal, and determine whether at least one of the pressure of the acid liquid raw material, the pressure of the acid liquid solvent, and the pressure of the target acid liquid is within a preset pressure range based on the pressure signal; if not, an abnormal warning signal is sent out, or at least one of the pressure of the acid liquor raw material, the pressure of the acid liquor solvent and the pressure of the target acid liquor is adjusted.

Further, in specific implementation, the central controller 202 may select a control manner of the acid liquid draining device 510 according to a requirement of a working condition, which may include any one of pressure control, flow control, and liquid level control in an associated closed mixing tank, in the process, the acid liquid material supplying device 502 and the acid liquid solvent supplying device 504 are operated in an associated manner; the central controller 202 may select the control modes of the acid solution raw material supply device 502 and the acid solution solvent supply device 504 according to the requirements of the working conditions, and may include any one of the control modes related to the liquid level in the closed mixing tank and the flow control in the acid solution discharge device 510.

Further, the control device further includes: the manifold device is used for conveying all the liquid in the acid liquor mixing equipment.

Further, in consideration of the process of supplying liquid into the closed mixing tank by the acid liquid raw material supply device 502 and the acid liquid solvent supply device 504, a liquid level control method or a flow control method may be selected to control the flow rate of the target acid liquid raw material of the acid liquid raw material supply device 502 and the flow rate of the target acid liquid solvent of the acid liquid solvent supply device 504; specifically, the central controller 202 determines the raw material and solvent supply control mode based on the type of the target acid receiving device; in specific implementation, if the type of the target acid liquid receiving device is an acidification pump truck, the raw material and solvent supply control mode is a liquid level control mode, and if the type of the target acid liquid receiving device is an acid liquid buffer tank, the raw material and solvent supply control mode is a flow control mode;

in the method, for the case that the raw material and solvent supply control mode is the liquid level control mode, the central controller 202 sends a corresponding first flow control signal to the acid liquor raw material supply device 502 based on the actual liquid level and the actual concentration of the initial target acid liquor in the closed mixing tank, so that the acid liquor raw material supply device 502 delivers the acid liquor raw material with a first flow to the closed mixing tank based on the first flow control signal; and sending a corresponding second flow control signal to the acid solvent supply 504 to cause the acid solvent supply 504 to deliver a second flow of acid solvent to the closed mixing tank based on the second flow control signal; in specific implementation, when the actual concentration of the target acid solution is greater than the target concentration, the second flow rate is increased to increase the supply amount of the acid solution solvent, and when the actual concentration of the target acid solution is less than the target concentration, the first flow rate is increased to increase the supply amount of the acid solution raw material.

Specifically, the central controller 202 calculates a target liquid level expected to be reached based on the concentration value of the target acid solution, and when judging that the difference value between the target liquid level and the actual liquid level is greater than a preset threshold value based on a real-time liquid level signal acquired by the liquid level sensor, the central controller 202 sends corresponding control signals to a first flow regulating device in the acid solution raw material supply device 502 and a second flow regulating device in the acid solution solvent supply device 504, and automatically regulates the opening sizes of the first flow regulating device and the second flow regulating device, so that the target acid solution reaches a required concentration value; specifically, when the target acid concentration value is greater than the actual acid concentration value, the first flow regulating device is controlled to mainly calculate the water flow demand according to the target acid concentration value in real time, and the second flow regulating device is controlled to make the actual liquid level reach the target liquid level under the control of the first flow regulating device and the second flow regulating device, so that the target acid concentration value is reached; and when the target acid concentration value is smaller than the actual acid concentration value, controlling the second flow regulating device as a main part, calculating the flow of the required acid in real time according to the target acid concentration value, and controlling the first flow regulating device to enable the actual liquid level to reach the target liquid level under the control of the first flow regulating device and the second flow regulating device so as to reach the target acid concentration value.

In the method, for the case that the raw material and solvent supply control mode is the flow control mode, the central controller 202 sends a corresponding third flow control signal to the acid material supply device 502 based on the delivery flow rate of the target acid liquid in the acid liquid discharge device 510, the actual liquid level and the actual concentration of the initial target acid liquid in the closed mixing tank, so that the acid material supply device 502 delivers the acid material with the first flow rate to the closed mixing tank based on the third flow control signal; and sending a corresponding fourth flow control signal to acid solvent supply 504 to cause acid solvent supply 504 to deliver the second flow of acid solvent to the enclosed mixing tank based on the fourth flow control signal.

Specifically, the flow rate refers to a discharge flow rate of the target acid solution in the acid solution discharge device 510, specifically, the central controller 202 calculates a target liquid level expected to be reached based on a change of the target acid solution discharge flow rate and a concentration value of the target acid solution, and when determining that a difference between the target liquid level and an actual liquid level is greater than a preset threshold value based on a real-time liquid level signal collected by the liquid level sensor, the central controller 202 sends corresponding control signals to the first flow rate regulating device and the second flow rate regulating device to automatically regulate opening sizes of the first flow rate regulating device and the second flow rate regulating device, so that the target acid solution reaches a required concentration value.

Further, considering the process of delivering the target acid solution to the oilfield operation site by the acid solution discharge device 510, any one of the control modes of pressure control, flow control and liquid level control may be selected to control the acid solution discharge of the acid solution discharge device 510; specifically, the central controller 202 determines a target acid liquid discharge control mode based on the type of the target acid liquid receiving device; in specific implementation, if the type of the target acid liquid receiving device is an acidification pump truck, the target acid liquid discharge control mode is a pressure control mode, and if the type of the target acid liquid receiving device is an acid liquid buffer tank, the target acid liquid discharge control mode is a flow control mode or a liquid level control mode;

further, the central controller 202 is configured to determine a type of a target adjusting device to be controlled based on the determined target acid liquid discharge control manner, where the type of the target adjusting device includes: any one of the acid feed 502, acid solvent feed 504, and acid drain 510, and based on the type of the target adjustment device, sends a corresponding control signal to any one of the acid feed 502, acid solvent feed 504, and acid drain 510;

specifically, if the target acid liquid discharge control mode is a pressure control mode, the central controller 202 determines whether a difference between the target pressure and the actual pressure is greater than a preset threshold value based on a target pressure value of the target acid liquid discharged by the acid liquid discharge device 510 and a real-time pressure signal collected by the pressure sensor, and if the difference is greater than the preset threshold value, the central controller 202 sends a pressure control signal to the acid liquid discharge device 510, so that the acid liquid discharge device 510 adjusts a rotation speed based on the pressure control signal, and the discharge pressure of the acid liquid discharge device 510 reaches the target pressure value;

correspondingly, if the target acid liquid discharge control mode is a flow control mode, the central controller 202 determines whether a difference between a target flow and an actual flow is greater than a preset threshold value based on a target flow value of the target acid liquid discharged by the acid liquid discharge device 510 and a real-time flow signal collected by the flow sensor, and if the difference is greater than the preset threshold value, the central controller 202 sends a flow control signal to the acid liquid discharge device 510 to enable the acid liquid discharge device 510 to adjust a rotating speed based on the flow control signal, so that the discharge flow of the acid liquid discharge device 510 reaches the target flow value;

correspondingly, if the target acid liquid discharge control mode is a liquid level control mode, the central controller 202 judges whether a difference value between a target liquid level and an actual liquid level is greater than a preset threshold value based on a target liquid level value of the initial target acid liquid in the closed mixing tank and a real-time liquid level signal acquired by the liquid level sensor, and if the difference value is greater than the preset threshold value, the central controller 202 sends a liquid level control signal to the acid liquid discharge device 510, so that the acid liquid discharge device 510 adjusts the rotating speed based on the liquid level control signal, and the liquid level in the closed mixing tank reaches the target liquid level value.

Further, in order to automatically prepare the chemical additive required to be added to the oilfield operation condition equipment 206 in the chemical additive adding process required for oilfield stimulation operation, the chemical additive combination corresponding to the fracturing stimulation mode includes: a plurality of types of first targeted chemical additives; the additive output port of the container in which each first target chemical additive is located is connected to a plurality of additive input ports in the oilfield operation condition device 206 via a first multi-way switching valve, each additive input port is connected to the additive output port via a switch path in the first multi-way switching valve, and the plurality of additive input ports include: additive input ports of the solvent suction device 308, the first mixing device 310, the second mixing device 312, and the mixed liquid discharge device 314;

correspondingly, in step S106, after determining a target oilfield stimulation mode required for a target wellsite in an oilfield operation site based on the oilfield geological parameter information, the method further includes:

determining the adding position of each first target chemical additive based on the functional information and the reaction speed information of each first target chemical additive;

and sending a fifth control signal to the chemical adding device based on the adding position of each first target chemical additive, so that the chemical adding device opens a switching path between an additive output port of the container where the first target chemical additive is located and an additive input port corresponding to the adding position after receiving the fifth control signal, and then the first target chemical additive is conveyed to at least one of the additive input ports of the solvent suction device, the first mixing device, the second mixing device and the mixed liquid discharge device.

Specifically, the central controller 202 is further configured to determine an adding position of each first target chemical additive based on the functional information and the reaction speed information of each first target chemical additive; and sends a fifth control signal to the chemical addition device 204 based on the addition position of each first target chemical additive;

the chemical adding device 204 is configured to open a switching path between an additive output port of a container in which the first target chemical additive is located and an additive input port corresponding to the adding position after receiving the fifth control signal, so that the first target chemical additive is delivered to at least one of the additive input ports of the solvent suction device 308, the first mixing device 310, the second mixing device 312, and the mixed liquid discharge device 314.

Specifically, when the addition position is determined according to the function information of the first target chemical additive, for example, the target chemical additive is a cross-linking agent, and the cross-linking agent needs to react with the prepared fracturing fluid, so the addition position of the cross-linking agent is generally set on the second mixing device 312, the central controller 202 sends a fifth control signal to the chemical addition device 204 based on the addition position of the cross-linking agent, and after receiving the fifth control signal, the chemical addition device 204 opens a switch path between an additive output port of a container where the cross-linking agent is located and an additive input port of the second mixing device 312, so that the cross-linking agent is delivered to the second mixing device 312; when the adding position is determined according to the reaction speed information of the first target chemical additive, for example, the target chemical additive is a gel breaker, the reaction speed of the gel breaker and a liquid system is determined according to the chemical properties of the gel breaker, and then the adding position of the gel breaker is determined, for example, the smaller the value of the reaction speed is, the slower the reaction of the gel breaker is, and conversely, the larger the value of the reaction speed is, the faster the reaction of the gel breaker is, and if the reaction speed is smaller than a first preset threshold value, the adding position of the gel breaker is determined to be a solvent suction device 308 (i.e., a chemical additive is added at the beginning of preparation of the target fracturing fluid), and correspondingly, the central controller 202 sends a fifth control signal to the chemical adding device 204 based on the adding position of the gel breaker, and after the chemical adding device 204 receives the fifth control signal, opens a switch between an additive output port of a container where the gel breaker is located and an additive input port of the solvent suction device 308 A pathway to deliver the breaker to the solvent intake 308; if the reaction speed is higher than the second preset threshold, determining that the adding position of the gel breaker is the mixed liquid discharging device 314 (i.e., the chemical additive is added at the end of preparation of the target fracturing liquid), correspondingly, the central controller 202 sends a fifth control signal to the chemical adding device 204 based on the adding position of the gel breaker, and after receiving the fifth control signal, the chemical adding device 204 opens a switch path between an additive output port of a container where the gel breaker is located and an additive input port of the mixed liquid discharging device 314, so that the gel breaker is conveyed to the mixed liquid discharging device 314; for another example, when the reaction speed is greater than the first preset threshold and less than the second preset threshold, it is determined that the adding position of the gel breaker is the first mixing device 310 or the second mixing device 312 (i.e., a chemical additive is added in the preparation process of the target fracturing fluid), correspondingly, the central controller 202 sends a fifth control signal to the chemical adding device 204 based on the adding position of the gel breaker, and after receiving the fifth control signal, the chemical adding device 204 opens a switching path between an additive output port of a container where the gel breaker is located and an additive input port of the first mixing device 310 or the second mixing device 312, so as to deliver the gel breaker to the first mixing device 310 or the second mixing device 312; furthermore, a PH meter and a viscometer can be arranged in the fracturing fluid mixing equipment and used for measuring the characteristics of the whole liquid system so as to judge the adding position of the target chemical additive.

Further, the chemical additive combination corresponding to the acidification yield-increasing mode comprises: a plurality of types of second targeted chemical additives; the additive output port of each container containing the second target chemical additive is connected to a plurality of additive input ports in the oilfield operation condition equipment 206 via a second multi-way switching valve, each of the additive input ports is connected to the additive output port via a switch path in the second multi-way switching valve, and the plurality of additive input ports include: additive input ports of acid feed 502, acid solvent feed 504, acid mixer 508, and acid drain 510;

determining the adding position of each second target chemical additive based on the functional information and the reaction speed information of each second target chemical additive;

and sending a sixth control signal to the chemical adding device based on the adding position of each second target chemical additive, so that the chemical adding device opens a switch path between an additive output port of the container where the second target chemical additive is located and an additive input port corresponding to the adding position after receiving the sixth control signal, and then the second target chemical additive is conveyed to at least one of the additive input ports of the acid liquor raw material supply device, the acid liquor solvent supply device, the acid liquor mixing device and the acid liquor discharge device.

Specifically, the central controller 202 is further configured to determine an addition position of each second target chemical additive based on the functional information and the reaction speed information of each second target chemical additive; and transmits a sixth control signal to the chemical addition device 204 based on the addition position of each of the second target chemical additives;

the chemical adding device 204 is configured to open a switch path between an additive output port of a container in which the second target chemical additive is located and an additive input port corresponding to the adding position after receiving the sixth control signal, so that the second target chemical additive is delivered to at least one of the additive input ports of the acid liquid raw material supply device 502, the acid liquid solvent supply device 504, the acid liquid mixing device 508, and the acid liquid discharge device 510.

Further, as shown in fig. 9, the chemical adding device 204 includes: a second drive actuator 2042, and a chemical additive storage 2044;

determining the reagent type of a target chemical additive required to be added during preparation of the yield increasing operation related reagent based on the performance parameter information of the yield increasing operation related reagent;

determining identification information of at least one target container to be opened based on the reagent type of each target chemical additive; and the number of the first and second groups,

determining the addition amount and the addition position of a target chemical additive to be added based on the performance parameter information of the yield increasing operation related reagent;

based on the identification information of the target container, the additive amount of the target chemical additive, and the addition position, a corresponding reagent addition control signal is sent to the second drive execution device 2042, so that after receiving the reagent addition control signal, the second drive execution device 2042 controls the opening of the switch path between the additive output port of the target container and the additive input port corresponding to the addition position in the oilfield operation condition equipment 206, so as to provide the target chemical additive to the oilfield operation condition equipment 206 according to the additive amount.

In fig. 9, the chemical additive storage device 2044 includes a plurality of containers for storing different types of chemical additives, the second driving execution device 2042 is respectively connected to the central controller 202 and the chemical additive storage device 2044, and additive output ports of the containers are connected to additive input ports at a plurality of positions in the oilfield operation condition equipment 206 through a plurality of switch paths in a preset multi-way switching valve;

specifically, the central controller 202 is configured to determine identification information of at least one target container to be opened based on a reagent type of a target chemical additive to be added during preparation of the reagent related to the stimulation operation; determining the addition amount and the addition position of a target chemical additive to be added based on the performance parameter information of the reagent related to the yield increasing operation; and sends a corresponding reagent addition control signal to the second drive actuator 2042 based on the identification information of the target container, the amount of addition of the target chemical additive, and the addition position; further, the chemical adding device 204 can dynamically adjust the adding amount and the adding position of the target chemical additive based on the performance parameter information of the reagent related to the yield increasing operation in real time;

the second driving execution device 2042 is configured to, after receiving the reagent addition control signal, control a switch path between an additive output port of the target container and an additive input port corresponding to an addition position in the oilfield operation condition equipment 206 to be opened, so as to provide the target chemical additive for the oilfield operation condition equipment 206 according to the addition amount; the plurality of containers for storing different types of chemical additives in the chemical additive storage device 2044 may include a liquid chemical additive storage container and a powder chemical additive storage container; the second driving actuator 2042 may include a first driving device, a first actuator, a second driving device, and a screw conveyor; one end of the first execution device is connected with the first driving device, and the other end of the first execution device is arranged at an additive output port of the liquid chemical additive storage container; specifically, the first driving device controls the addition amount of the target liquid chemical additive by driving the rotation speed of the first execution device; one end of the screw conveying device is connected with the second driving device, and the other end of the screw conveying device is arranged at an additive output port of the powder chemical additive storage container; the first driving device and the second driving device are respectively connected with the central controller 202; in specific implementation, the driving mode of the first driving device and the second driving device can be any one of direct motor driving, diesel driving and liquid driving and electric driving; the driving device of the first driving device and the second driving device can be any one of a motor, a valve and a pump; the first actuator may be a volume-type device, or other actuator.

In the chemical adding device 204 provided in the embodiment of the present invention, the chemical adding device 204 includes: a second drive actuator 2042, and a chemical additive storage 2044; the chemical additive storage device 2044 includes multiple containers for storing different types of chemical additives, the second driving execution device 2042 is respectively connected to the central controller 202 and the chemical additive storage device 2044, and additive output ports corresponding to the multiple containers are communicated with additive input ports at multiple positions in the oilfield operation condition equipment 206 through multiple switch paths in a preset multi-way switching valve; specifically, by additionally arranging a storage device including a plurality of divided chemical additive containers, the central controller 202 automatically determines the type and the addition amount of a target chemical additive to be added to the oilfield operation condition equipment 206 in each oilfield operation node, and sends a corresponding reagent addition control signal to the second driving execution device 2042, the second driving execution device 2042 controls the opening of a switch passage between an additive output port corresponding to the container where the target chemical additive is located and an additive input port at a position where the target chemical additive is to be added, so that the automatic addition of the corresponding chemical additive is automatically controlled according to the oilfield operation process requirements of the target condition equipment for each operation node in the oilfield operation process, the workload of oilfield operation workers is reduced, the addition accuracy of the chemical additive is improved, and meanwhile, as all the chemical additives required by the oilfield operation condition equipment 206 are stored in the chemical additive storage device 2044, the oil field operation working condition equipment can be not only working condition equipment for oil field production increasing operation nodes, but also working condition equipment for other oil field operation nodes, for example, the working condition equipment for oil field drilling operation nodes and the working condition equipment for oil field well cementation operation nodes, so that the purpose that the same chemical additive adding equipment is automatically compatible with all the working condition equipment in the whole flow of oil field operation is achieved, the oil field working condition equipment is not required to be respectively provided with respective chemical additive adding equipment, the control system framework for chemical additive adding of the oil field operation is simplified, and the investment cost for chemical additive adding of the oil field operation is reduced.

Further, in order to improve the accuracy of flow control of the liquid chemical additive, the control device further includes: the flow sensor is arranged at the reagent output ports of the liquid chemical additive storage containers;

the flow sensor is configured to monitor a flow output signal of the target liquid chemical additive and transmit the flow output signal to the central controller 202;

the central controller 202 is configured to determine whether the flow rate of the target liquid chemical additive is within a preset adding range of the target liquid chemical additive based on the flow rate output signal;

the second driving device controls the addition amount of the target powder additive by driving the rotating speed of the spiral conveying device; further, a weighing and metering device may be disposed below the storage container for chemical additive powder, and is configured to monitor an actual addition amount of a target powder additive, and transmit a first indication signal for indicating the actual addition amount to the central controller 202, and when it is determined based on the first indication signal that a difference between the actual addition amount of the target powder additive and a target addition amount of the target powder additive is greater than a preset threshold, the central controller 202 sends a corresponding control signal to the screw conveyor, so that the screw conveyor adjusts a conveying rotation speed based on the control signal, so as to correct the actual addition amount of the target powder additive conveyed to the target oilfield operation condition equipment; further, the screw conveyer is also provided with a rotating speed metering device for monitoring the actual rotating speed of the screw conveyer and transmitting a second indicating signal for indicating the actual rotating speed to the central controller 202, the central controller 202 judges whether the addition amount of the powder additive is within a preset controllable range or not based on the second indicating signal, and if not, the actual rotating speed of the screw conveyer is continuously adjusted; further, a butterfly valve device is arranged below the powder chemical additive storage container, the butterfly valve device is connected with the central controller 202 through a driving device, and the driving device controls the opening of the butterfly valve by receiving a powder chemical additive adding signal sent by the central controller 202.

Wherein, for the condition that the current operation node is not an oilfield stimulation operation node, the central controller 202 is further configured to send a corresponding chemical addition control signal to the chemical addition device 204 based on the type and the addition amount of the target chemical additive that needs to be added by the oilfield working condition operation equipment, and the chemical addition device 204 is configured to control the opening of the target container and the addition of the target chemical additive by the second driving execution device 2042 based on the chemical addition control signal.

Specifically, the field parameter collecting device 208 further includes: a touch-enabled display screen, configured to receive a user touch signal input by a target user and used to indicate an oilfield operation condition parameter of the oilfield operation condition device 206 corresponding to a current oilfield operation node, and transmit the user touch signal to the central controller 202; the central controller 202 is configured to determine, based on the user touch signal, a reagent type of a chemical additive that needs to be added to the oilfield operation condition device 206, and determine identification information of at least one target container to be opened based on the reagent type of the chemical additive; determining the addition amount and the addition position of a target chemical additive to be added based on the performance parameter information of the reagent related to the yield increasing operation; and transmits a corresponding reagent addition control signal to the second drive actuator 2042 based on the identification information of the target container, the amount of addition of the target chemical additive, and the addition position.

For the process of adding the target chemical additive by the second driving execution device 2042, at least one of the addition control modes of the dial ratio, the percentage and the set flow rate may be selected.

For the process of driving the second driving execution device 2042 by the central controller 202, a continuous control mode may be selected, that is, the additive amount of the target chemical additive carried in the reagent addition control signal is adjusted in real time in combination with the instantaneous displacement of the target oilfield operation condition equipment 206; and a formula control mode can also be selected, namely preset adding proportions of the chemical additives corresponding to a plurality of stages in each operation node are preset, and the adding amount of the target chemical additive carried in the reagent adding control signal is adjusted according to the preset adding proportion of the chemical additive corresponding to the current operation stage by combining the accumulated discharge capacity of the target working condition equipment.

Further, considering that the chemical additive is greatly influenced by the external environment, and is likely to be crystallized at a low temperature, and has a large viscosity value change, and is likely to cause an operational error at an operation site, the chemical addition device 204 further includes: a temperature adjustable heater 2046 connected to the central controller 202; the temperature adjustable heater 2046 is disposed at a first predetermined position in the chemical additive storage device 2044; the cabin of the chemical additive storage device 2044 may be provided with an integrally controlled temperature-adjustable heater 2046, that is, the whole space of the cabin is heated, or each chemical additive may be provided with a heater, or a heater including a plurality of heating elements for heating the plurality of chemical additives may be used to ensure that the temperature of each chemical additive is maintained within a desired temperature range.

The central controller 202 is further configured to send a corresponding temperature control signal to the temperature adjustable heater 2046 based on the crystallization critical temperature of the target chemical additive;

the temperature adjustable heater 2046 is configured to receive the temperature control signal, and control the heating element thereof to heat to a specified temperature, so as to provide a constant temperature environment for the target chemical additive.

Correspondingly, the heating mode of the temperature-adjustable heater 2046 may be fuel oil heating or electric heating; specifically, the temperature-adjustable heater 2046 is additionally arranged in the chemical additive storage device 2044 to ensure that the temperature in the chemical additive storage device 2044 is within a controllable range, so that the influence on the performance of the chemical additive caused by the change of the environmental temperature is avoided.

Wherein, in order to improve the accuracy of the temperature control of the chemical additive, and find and solve in time when the temperature control abnormality occurs in the temperature adjustable heater 2046, based on this, the chemical additive device 204 further comprises: a first temperature sensor and/or a plurality of second temperature sensors connected to the central controller 202; the first temperature sensor is disposed at a second predetermined position in the chemical additive storage device 2044, and the second temperature sensor is disposed at a third predetermined position in the plurality of containers;

the first temperature sensor is configured to monitor a global temperature signal in the chemical additive storage device 2044 and transmit the global temperature signal to the central controller 202;

the second temperature sensor is configured to monitor local temperature signals of the chemical additives stored in the plurality of containers and transmit the local temperature signals to the central controller 202;

the central controller 202 is configured to determine whether the temperature of the target chemical additive is within a preset temperature range based on the global temperature signal and/or the local temperature signal, and if not, adjust the heating temperature of the temperature adjustable heater 2046 or output corresponding temperature abnormality warning information.

Specifically, not only is the temperature-adjustable heater 2046 added to the chemical additive storage device 2044, but also a temperature sensor for monitoring the overall temperature and/or a temperature sensor for monitoring the temperature of each chemical additive are added to achieve real-time monitoring of the actual temperature control effect of the temperature-adjustable heater 2046, thereby avoiding the problem that the actual ambient temperature of the chemical additives cannot be ensured due to the heater being abnormal.

Further, in order to improve the accuracy of the flow control of the chemical additive, the control device further includes: a flow sensor connected to the central controller 202; the flow sensor is arranged at the additive output ports corresponding to the containers;

the flow sensor is used for monitoring a flow output signal of the target chemical additive and transmitting the flow output signal to the central controller 202;

the central controller 202 is configured to determine whether the flow rate of the target chemical additive is within a preset flow rate range based on the flow rate output signal, and if not, control the second driving execution device 2042 to adjust the opening or speed of the execution module for controlling the output flow rate of the target chemical additive, or output a corresponding flow rate abnormality alarm signal.

Wherein, the flow sensor can be any one of a device for measuring the flow rate in an electromagnetic flowmeter, a mass flowmeter, a turbine flowmeter and a volume theory meter; specifically, a flow sensor is arranged at an additive output port corresponding to each chemical additive container, so that the actual flow of the chemical additives output from the chemical additive containers is monitored in real time, and the actual flow is compared with the target flow to identify whether the flow of the target chemical additives is within a preset flow range; wherein the target flow rate is determined based on the addition amount of the target chemical additive, thereby realizing accurate control of the actual flow rate of the chemical additive.

Specifically, the central controller 202 also determines an instantaneous and/or cumulative flow rate of the target chemical additive based on the received flow output signal and transmits the instantaneous and/or cumulative flow rate of the target chemical additive to a display device, which dynamically displays the instantaneous and/or cumulative flow rate of the target chemical additive.

Further, in consideration of the difference of the oilfield operation condition devices 206, the types of signals output by different condition devices may be different, and in order to make the chemical addition device 204 compatible with multiple types of oilfield operation condition devices 206, based on this, the central controller 202 is further configured to receive the current oilfield operation signal sent by the target oilfield operation condition device 206; and performing type conversion processing on the current oilfield operation signal based on the output signal type of the target oilfield operation condition equipment 206, and determining oilfield operation parameter information of the target oilfield operation condition equipment 206 based on the converted current oilfield operation signal.

Specifically, the target oilfield operation condition device 206 sends a corresponding current oilfield operation signal to the central controller 202 based on a current oilfield operation condition, where the current oilfield operation signal carries at least one of identification information of the target oilfield operation condition device 206, an equipment operation displacement (such as a fracturing fluid displacement of a fracturing fluid blending device, an acid fluid displacement of an acid fluid blending device, and the like), and an equipment operation parameter (such as a rotation speed, an operating current, a voltage, and the like), and the signal type of the current oilfield operation signal may be any one of a current signal, a pulse signal, a voltage signal, and a network communication signal; the central controller 202 receives the current oilfield operation signal, converts the current oilfield operation signal into an oilfield operation signal of a preset signal type, determines oilfield operation parameter information of target working condition equipment based on the converted signal, and controls the preparation process of the oilfield operation related reagent and/or controls the addition process of the chemical additive based on the oilfield operation parameter information, so that the oilfield operation working condition equipment 206 compatible with various signal types can realize automatic preparation control of the oilfield operation related reagent and automatic addition control of the chemical additive.

Further, the flow sensor may be any one of an electromagnetic flowmeter, a mass flowmeter, a turbine flowmeter, and a volume theory meter; specifically, a flow sensor is arranged at an additive output port corresponding to each chemical additive container, so that the actual flow of the chemical additives output from the chemical additive containers is monitored in real time, and the actual flow is compared with the target flow to identify whether the flow of the target chemical additives is within a preset flow range; wherein the target flow rate is determined based on the addition amount of the target chemical additive, thereby realizing accurate control of the actual flow rate of the chemical additive.

Further, in order to improve the convenience of manual control of the oilfield operation working condition parameters by oilfield operation workers and improve the manual setting efficiency of the oilfield operation working condition parameters, based on this, the control system for preparing the oilfield operation reagent further comprises a touch display screen connected with the central controller 202;

further, in order to facilitate the remote control of the oilfield operation worker on the oilfield operation reagent preparation system, the oilfield operation reagent preparation system further comprises: a wireless communication module, through which the central controller 202 is connected to a user terminal;

the user terminal may be a mobile terminal with a wireless communication function, including but not limited to a smart phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, and the like.

The embodiment of the invention provides a control method for preparing an oilfield operation reagent, which comprises the following steps: acquiring operation parameter information of an oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller judges whether the current oilfield operation node is an oilfield production increasing operation node or not based on the equipment identification information; if so, determining a target oilfield production increasing mode required by a target well site in the oilfield operation site based on the geological parameter information of the oilfield; wherein, this target oil field stimulation mode includes: a fracturing stimulation mode or an acidizing stimulation mode; the central controller also controls the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the well site stratum parameter information of the current operation stratum; when the target oil field production increasing mode is a fracturing production increasing mode, the corresponding production increasing operation related reagent is fracturing fluid; when the yield increasing mode of the target oil field is an acidification yield increasing mode, the corresponding yield increasing operation related reagent is acid liquor; and based on the performance parameter information of the reagent related to the yield increasing operation, the controlled chemical addition device provides at least one target chemical additive corresponding to the target oil field yield increasing mode for the oil field operation working condition equipment, so that the required reagent is automatically prepared on the oil field operation site according to the parameter information of the geology and the stratum of the oil field well site, and the flexibility of reagent preparation is improved.

Based on the same technical concept, the present invention also provides a control system for oilfield operation reagent preparation, the control system is used for implementing the control method in fig. 1, as shown in fig. 10, and the control system comprises: the system comprises a central controller, a chemical addition device, an oil field operation working condition device and a field parameter acquisition device; the chemical adding device, the oilfield operation working condition equipment and the field parameter acquisition equipment are all connected with the central controller; specifically, the operation parameter information of the oilfield operation field acquired by the field parameter acquisition equipment is controlled by a central controller to automatically prepare a reagent required by the oilfield operation field; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller is used for judging whether the current oilfield operation node is an oilfield production increase operation node or not based on the equipment identification information, and if so, determining a target oilfield production increase mode required by a target well site in the oilfield operation site based on the oilfield geological parameter information, wherein the target oilfield production increase mode further comprises the following steps: the central controller is also used for controlling the oilfield operation working condition equipment to prepare a yield increase operation related reagent corresponding to the target oilfield yield increase mode based on the well site stratum parameter information of the current operation stratum, and controlling the chemical addition device to provide at least one target chemical additive corresponding to the target oilfield yield increase mode for the oilfield operation working condition equipment based on the performance parameter information of the yield increase operation related reagent, so that the required reagent is automatically prepared on the oilfield operation site according to the well site geology of the oilfield and the parameter information of the stratum, and the flexibility of reagent preparation is improved.

The control system for preparing the oilfield operation reagent provided by the embodiment of the invention can be applied to an application scene shown in fig. 10, wherein fig. 10 comprises the control system for preparing the oilfield operation reagent and a plurality of target well sites, wherein a central controller judges whether a current oilfield operation node is an oilfield stimulation operation node or not, and in the process of oilfield stimulation operation, because oilfield geological parameters of the position of each target well site have certain difference, an oilfield stimulation mode suitable for actual parameter values of the oilfield geological parameters needs to be adopted, and correspondingly, different oilfield operation related reagents need to be prepared, for example, the actual parameter values of the oilfield geological parameters are suitable for a target well site of a fracturing stimulation mode, preferably, a fracturing stimulation mode is adopted, and correspondingly, oilfield operation working condition equipment needs to be controlled to prepare target fracturing fluid; for another example, the actual parameter values of the geological parameters of the oil field are suitable for a target well site in an acidification and stimulation mode, for example, the current geology of the oil field is a geology which is easily corroded by acid, the acidification and stimulation mode is preferably adopted, and correspondingly, equipment for controlling the working conditions of the oil field operation is required to prepare target acid liquor; furthermore, considering that for a certain target well site, well site stratum parameters at different positions in the target well site have certain difference, when preparing the relevant reagent for oil field operation, the relevant reagent for oil field operation matched with the well site stratum parameter information needs to be prepared by referring to the well site stratum parameter information of the current operation stratum position (namely, the reagent corresponding to the well site stratum parameter information is adopted to prepare process parameters to prepare the target fracturing fluid or the target acid solution); furthermore, the method also considers that the addition parameter information of the chemical additive required to be provided for the oilfield operation working condition equipment is different due to the difference of the reagent parameter information of the currently prepared oilfield operation related reagent, namely the controlled chemical addition device provides at least one target chemical additive corresponding to the target oilfield production increasing mode for the oilfield operation working condition equipment based on the performance parameter information of the currently prepared oilfield operation related reagent.

Specifically, in fig. 10, the control system for preparing the oilfield operation agent includes: the system comprises a central controller, a chemical addition device, an oil field operation working condition device and a field parameter acquisition device; the chemical adding device, the oilfield operation working condition equipment and the field parameter acquisition equipment are all connected with the central controller; for example, the relevant reagent required to be added at the current target well site i is fracturing fluid or acid fluid; the field parameter acquisition equipment transmits the operation parameter information acquired on the oilfield operation field to the central controller; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the central controller judges whether the current oilfield operation node is an oilfield production increase operation node or not based on the collected equipment identification information, and if so, determines a target oilfield production increase mode required by a target well field in an oilfield operation field based on the collected oilfield geological parameter information; wherein, the target oil field production increasing mode comprises: a fracturing stimulation mode or an acidizing stimulation mode; the central controller is further used for controlling the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increase mode based on the well site stratum parameter information of the current operation stratum, wherein the oilfield operation working condition equipment preparation can be fracturing fluid mixing equipment or acid liquor mixing equipment; the related reagent for the yield increasing operation can be fracturing fluid or acid liquor; when the target oil field production increasing mode is a fracturing fluid production increasing mode, correspondingly, the oil field operation working condition equipment is used as fracturing fluid mixing equipment, and the fracturing fluid corresponding to the fracturing fluid production increasing mode is prepared by the fracturing fluid mixing equipment; when the target oilfield production increasing mode is an acidification production increasing mode, corresponding oilfield operation working condition equipment is used as acid liquor mixing equipment, and acid liquor corresponding to the acidification production increasing mode is prepared by the acid liquor mixing equipment; and based on the prepared performance parameter information of the oilfield operation related reagent, the chemical addition device is controlled to provide at least one target chemical additive corresponding to the target oilfield production increasing mode for oilfield operation working condition equipment, so that the preparation and dynamic adjustment of the oilfield operation related reagent as required can be ensured, and the addition and dynamic adjustment of the chemical additive as required can be ensured, thereby improving the preparation flexibility of the oilfield operation related reagent and the addition flexibility of the chemical additive.

Further, the wellsite formation parameter information is transmitted to the central controller by the field parameter collecting device when detecting that the wellsite formation parameter information of the current operation position and the wellsite formation parameter information of the previous operation position are changed, and correspondingly, the preparation process parameters of the yield increase operation related reagent are determined by the central controller based on the latest wellsite formation parameter information, and the performance parameter information corresponds to the currently prepared yield increase operation related reagent;

the field parameter acquisition equipment is specifically used for transmitting the well site stratum parameter information of the current operation position to the central controller when detecting that the well site stratum parameter information of the current operation position and the previous operation position changes; correspondingly, the central controller dynamically adjusts the preparation process parameter information of the oilfield operation related reagent based on the wellsite stratum parameter information of the current operation position, and dynamically adjusts the addition parameter information of the chemical additive based on the adjusted preparation process parameter information of the oilfield operation related reagent;

wherein, the preparation process parameter information comprises: at least one of the types of raw materials (i.e., the types of dry powder raw materials or the types of acid liquid raw materials), the types of solvents (i.e., the types of powder solvents or the types of acid liquid solvents), the amounts of raw materials (i.e., the types of dry powder raw materials or the types of acid liquid raw materials), the amounts of solvents, and the raw material-solvent ratios, wherein the information of the addition parameters includes: at least one of a type of the chemical additive, an addition amount of the chemical additive, and an addition position of the chemical additive.

That is to say, the control system for preparing the oilfield operation reagent can realize the dynamic adjustment of the preparation of the oilfield operation related reagent by combining the formation change parameter information of the well site, further dynamically adjusting the addition of the chemical additive by combining the current performance parameter information of the current oilfield operation related reagent, therefore, the preparation process of the oilfield operation related reagent can be associated with the actual situation of the oilfield operation field, the oilfield operation related reagent suitable for actual stratum geology of different positions in the current well site can be prepared, and can also ensure that the adding process of the chemical additive is associated with the current actual parameters of the oilfield operation related reagent, provide a suitable chemical additive for the oilfield operation related reagent prepared currently, therefore, the performance of the related reagents and chemical additives for oilfield operation is improved simultaneously, and the field exploitation effect of oilfield operation is improved doubly.

The embodiment of the invention provides a control system for preparing an oilfield operation reagent, which comprises: the system comprises a central controller, a chemical addition device, an oil field operation working condition device and a field parameter acquisition device; the chemical adding device, the oilfield operation working condition equipment and the field parameter acquisition equipment are all connected with the central controller; the field parameter acquisition equipment is used for acquiring operation parameter information of an oilfield operation field and transmitting the operation parameter information to the central controller; wherein the operation parameter information includes: equipment identification information of the oil field operation working condition equipment, oil field geological parameter information and well site stratum parameter information; the method comprises the steps that whether a current oilfield operation node is an oilfield production increasing operation node or not is judged by a central controller based on equipment identification information of oilfield operation working condition equipment, if yes, a target oilfield production increasing mode required by a target well field in an oilfield operation field is determined based on oilfield geological parameter information, and further the target oilfield production increasing mode comprises the following steps: a fracturing stimulation mode or an acidizing stimulation mode; the central controller is also used for controlling the oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increasing mode based on the well site stratum parameter information of the current operation stratum, and controlling the chemical addition device to provide at least one target chemical additive corresponding to the target oilfield yield increasing mode for the oilfield operation working condition equipment based on the performance parameter information of the yield operation related reagent, so that the required reagent is automatically prepared on the oilfield operation site according to the well site geology of the oilfield and the stratum parameter information, and the preparation flexibility of the reagent is improved.

It should be noted that the embodiment of the control method for oilfield operation reagent preparation in the present invention and the embodiment of the control system for oilfield operation reagent preparation in the present invention are based on the same inventive concept, and therefore, specific implementation of the embodiment may refer to implementation of the corresponding control system, and repeated details are not repeated.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the embodiments of the present invention have been described in connection with the accompanying drawings for illustrating the technical solutions of the present invention, the present invention is not limited to the above-mentioned embodiments, and the protection scope of the present invention is not limited thereto, and the above-mentioned embodiments are only illustrative and not restrictive, and although the present invention is described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the present invention in its spirit and scope. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of controlling the preparation of an oilfield operational agent, the method comprising:

2. The control method of claim 1, wherein if the target field stimulation modality is a fracture stimulation modality;

the method for controlling oilfield operation working condition equipment to prepare a yield operation related reagent corresponding to the target oilfield yield increase mode based on the wellsite stratum parameter information of the current operation stratum comprises the following steps:

determining the type of a dry powder raw material, the type of a powder solvent, the dry powder addition amount and the powder solvent addition amount which are required by the fracturing stimulation mode based on the well site stratum parameter information of the current operation stratum, and sending a first control signal to oilfield operation working condition equipment based on the type of the dry powder raw material, the type of the powder solvent, the dry powder addition amount and the powder solvent addition amount so that after the oilfield operation working condition equipment receives the first control signal, a target fracturing fluid required by the oilfield stimulation operation node is prepared based on the type of the dry powder raw material, the type of the powder solvent, the dry powder addition amount and the powder solvent addition amount, and is conveyed to the oilfield operation site;

based on performance parameter information of the agent relevant to the stimulation operation, the controlled chemical addition device provides at least one target chemical additive corresponding to the target oilfield stimulation mode for the oilfield operation working condition equipment, and the controlled chemical addition device comprises:

and determining a first reagent type and a first additive amount of a target chemical additive required by the fracturing stimulation mode based on the performance parameter information of the target fracturing fluid, and sending a second control signal to the chemical additive device based on the first reagent type and the first additive amount so that the chemical additive device provides a chemical additive combination corresponding to the fracturing stimulation mode for the oilfield operation condition equipment based on the first reagent type and the first additive amount after receiving the second control signal.

3. The control method of claim 1, wherein if the target field stimulation mode is an acidizing stimulation mode;

determining the type of an acid liquid raw material, the type of an acid liquid solvent, the addition amount of the acid liquid raw material and the addition amount of the acid liquid solvent required by the acidification yield increase mode based on the well site stratum parameter information of the current operation stratum, and sending a third control signal to an oilfield operation working condition device based on the type of the acid liquid raw material, the type of the acid liquid solvent, the addition amount of the acid liquid raw material and the addition amount of the acid liquid solvent, so that after receiving the third control signal, the oilfield operation working condition device prepares a target acid liquid required by the oilfield production increase operation node based on the type of the acid liquid raw material, the type of the acid liquid solvent, the addition amount of the acid liquid raw material and the addition amount of the acid liquid solvent, and conveys the target acid liquid to an oilfield operation site;

and determining a second reagent type and a second chemical addition amount of the target chemical additive required by the acidification and stimulation mode based on the performance parameter information of the target acid liquor, and sending a fourth control signal to a chemical addition device based on the second reagent type and the second chemical addition amount, so that the chemical addition device provides a chemical additive combination corresponding to the acidification and stimulation mode for the oilfield operation condition equipment based on the second reagent type and the second chemical addition amount after receiving the fourth control signal.

4. The control method of claim 2, wherein the oilfield operation condition device comprises: the device comprises a powder storage device, a solvent storage device, a powder suction device, a solvent suction device, a first mixing device, a second mixing device and a mixed liquid discharge device;

after receiving the first control signal, the oilfield operation working condition equipment prepares a target fracturing fluid required by the oilfield stimulation operation node based on the type of the dry powder raw material, the type of the powder solvent, the addition amount of the dry powder and the addition amount of the powder solvent, and conveys the target fracturing fluid to the oilfield operation site, and the oilfield operation working condition equipment comprises:

after receiving the first control signal, the oil field operation working condition equipment controls the powder suction device to convey the required dry powder raw material to the first mixing device from the powder storage device according to the type of the dry powder raw material and the dry powder addition amount; and the number of the first and second groups,

respectively conveying a first solvent with a first flow rate and a second solvent with a second flow rate to the first mixing device and the second mixing device according to the type of the powder solvent and the addition amount of the powder solvent from the solvent storage device by controlling the solvent suction device; and the number of the first and second groups,

mixing the dry powder raw material and the first solvent by controlling the first mixing device, and conveying the obtained initial fracturing fluid to the second mixing device; and the number of the first and second groups,

and mixing the initial fracturing fluid and the second solvent by controlling the second mixing device, and conveying the obtained target fracturing fluid to the mixed fluid discharge device so that the mixed fluid discharge device discharges the target fracturing fluid to the oilfield operation site.

5. The control method according to claim 4, characterized in that the first mixing device includes: a premixing stirrer, a venturi ejector and a booster pump;

the mixing the dry powder raw material and the first solvent by controlling the first mixing device, and conveying the obtained initial fracturing fluid to the second mixing device, comprises:

pressurizing the first solvent conveyed by the solvent suction device through a first output channel by controlling the booster pump, and conveying the pressurized first solvent to the premixing stirrer through a first branch channel according to a third flow rate and to the Venturi ejector through a second branch channel according to a fourth flow rate; and the number of the first and second groups,

premixing the dry powder raw material and the first solvent with the third flow rate by controlling the premixing stirrer to obtain premixed fracturing fluid; and the number of the first and second groups,

and sucking the premixed fracturing fluid by controlling the Venturi ejector, fully mixing the premixed fracturing fluid with the first solvent with the fourth flow rate, and conveying the obtained initial fracturing fluid to the second mixing device.

6. The control method according to claim 4, characterized in that the second mixing device includes: a secondary mixing diffuser and a fracturing fluid mixing tank;

the mixing of the initial fracturing fluid and the second solvent by controlling the second mixing device and the delivery of the obtained target fracturing fluid to the mixed fluid discharge device comprises:

mixing the initial fracturing fluid and the second solvent conveyed by the solvent suction device through a second output channel by controlling the secondary mixing diffuser, and conveying the obtained target fracturing fluid to the fracturing fluid mixing tank;

and temporarily storing the target fracturing fluid by controlling the fracturing fluid mixing tank, and conveying the target fracturing fluid to the mixed liquid discharge device.

7. The control method of claim 3, wherein the oilfield operation condition device further comprises: the acid liquor raw material supply device, the acid liquor solvent supply device, the first driving execution device, the acid liquor mixing device and the acid liquor discharge device;

after receiving the third control signal, the oilfield operation working condition device prepares a target acid solution required by the oilfield production increase operation node based on the type of the acid solution raw material, the type of the acid solution solvent, the addition amount of the acid solution raw material, and the addition amount of the acid solution solvent, and conveys the target acid solution to the oilfield operation site, and the oilfield operation working condition device includes:

after receiving the third control signal, the oilfield operation condition device controls the acid liquor raw material supply device to supply the acid liquor raw material with a first flow rate to the acid liquor mixing device by controlling the first drive execution device according to the type of the acid liquor raw material and the acid liquor raw material addition amount, and controls the acid liquor solvent supply device to supply the acid liquor solvent with a second flow rate to the acid liquor mixing device according to the type of the acid liquor solvent and the acid liquor solvent addition amount; and the number of the first and second groups,

mixing the acid liquor raw material with the first flow rate and the acid liquor solvent with the second flow rate by controlling the acid liquor mixing device to obtain a mixed target acid liquor, and conveying the target acid liquor to the acid liquor discharging device so that the acid liquor discharging device conveys the target acid liquor to the oilfield operation site.

8. The control method according to claim 7, wherein the acid mixing device comprises: the device comprises a closed mixing tank, a stirrer and a liquid level sensor;

the mixing the acid liquor raw material with the first flow rate and the acid liquor solvent with the second flow rate by controlling the acid liquor mixing device to obtain a mixed target acid liquor, and conveying the target acid liquor to the acid liquor discharging device includes:

mixing the acid liquor raw material with the first flow rate and the acid liquor solvent with the second flow rate by controlling the closed mixing tank to obtain an initial target acid liquor, and conveying the target acid liquor stirred by the stirrer to the acid liquor discharge device;

9. The control method according to claim 4, wherein the chemical additive combination corresponding to the fracture stimulation mode comprises: a plurality of types of first targeted chemical additives; the additive output port of the container in which each first target chemical additive is located is connected with a plurality of additive input ports in the oilfield operation condition equipment through a first multi-way switching valve, each additive input port is connected to the additive output port through a switch passage in the first multi-way switching valve, and the plurality of additive input ports comprise: an additive input port of the solvent suction device, the first mixing device, the second mixing device, and the mixed liquid discharge device;

after determining a target oilfield stimulation mode required for a target wellsite in the oilfield operation field based on the oilfield geological parameter information, the method further comprises the following steps:

determining the adding position of each first target chemical additive based on the functional information and the reaction speed information of the first target chemical additive;

and sending a fifth control signal to the chemical adding device based on the adding position of each first target chemical additive, so that the chemical adding device opens the switch path between the additive output port of the container where the first target chemical additive is located and the additive input port corresponding to the adding position after receiving the fifth control signal, so as to convey the first target chemical additive to at least one of the additive input ports of the solvent suction device, the first mixing device, the second mixing device and the mixed liquid discharge device.

10. The control method of claim 7, wherein the chemical additive combination for the acidizing stimulation mode comprises: a plurality of types of second targeted chemical additives; the additive output port of the container in which each second target chemical additive is located is connected with a plurality of additive input ports in the oilfield operation condition equipment through a second multi-way switching valve, each additive input port is connected to the additive output port through a switch passage in the second multi-way switching valve, and the plurality of additive input ports comprise: the acid liquor raw material supply device, the acid liquor solvent supply device, the acid liquor mixing device and the additive input ports of the acid liquor discharge device;

determining the adding position of each second target chemical additive based on the functional information and the reaction speed information of the second target chemical additive;

and sending a sixth control signal to the chemical adding device based on the adding position of each second target chemical additive, so that the chemical adding device opens the switch path between the additive output port of the container where the second target chemical additive is located and the additive input port corresponding to the adding position after receiving the sixth control signal, so as to deliver the second target chemical additive to at least one of the acid liquor raw material supply device, the acid liquor solvent supply device, the acid liquor mixing device and the additive input port of the acid liquor discharging device.

11. The control method according to claim 1, wherein the chemical addition device includes: a second driving execution device and a chemical additive storage device; the chemical additive storage device comprises a plurality of containers for storing different types of chemical additives, the second driving execution device is respectively connected with the central controller and the chemical additive storage device, and additive output ports of the containers are connected with additive input ports at a plurality of positions in the oilfield operation working condition equipment through a plurality of switch passages in a preset multi-way switching valve;

determining the reagent type of a target chemical additive required to be added when the reagent relevant to the stimulation operation is prepared based on the performance parameter information of the reagent relevant to the stimulation operation;

determining identification information of at least one target container to be opened based on a reagent type of each of the target chemical additives; and the number of the first and second groups,

determining the addition amount and the addition position of a target chemical additive to be added based on the performance parameter information of the agent related to the yield increasing operation;

and sending a corresponding reagent addition control signal to the second driving execution device based on the identification information of the target container, the addition amount of the target chemical additive and the addition position, so that the second driving execution device controls the opening and closing of the switch path between the additive output port of the target container and the additive input port corresponding to the addition position in the oilfield operation working condition equipment after receiving the reagent addition control signal, and the target chemical additive is provided for the oilfield operation working condition equipment according to the addition amount.

12. A control system for oilfield operations reagent preparation, the system comprising: the system comprises a central controller, a chemical addition device, an oil field operation working condition device and a field parameter acquisition device; the chemical adding device, the oilfield operation working condition equipment and the field parameter acquisition equipment are all connected with the central controller;