CN114718511A - Gas storage annulus leakage gas treatment system, method and device - Google Patents
Gas storage annulus leakage gas treatment system, method and device Download PDFInfo
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Abstract
The application relates to a system, a method and a device for processing gas leakage in an annulus of a gas storage, and relates to the technical field of gas well exploitation of the gas storage. The system comprises: the system comprises a gas production tree, an input gas pipeline, a gas production pipeline, a leakage gas recovery pipeline, control equipment and a booster pump; the gas input pipeline is connected with a needle-shaped gate of the gas production tree and is used for inputting gas into the gas storage; the produced gas pipeline is connected with a needle-shaped gate of the gas production tree and is used for outputting gas from the gas storage; the leakage gas recovery pipeline is connected with a sleeve gate of the gas production tree and is used for conveying leakage gas in the gas storage; the leakage gas recovery pipeline is respectively connected with the output gas pipeline and the input gas pipeline; a booster pump is arranged on the leaked gas recovery pipeline; the control equipment is electrically connected with the booster pump and is used for controlling the booster pump to carry out boosting treatment on leaked gas so that the leaked gas enters the input gas pipeline or the output gas pipeline. Through the system, the leaked gas is recycled, and the waste of gas resources is reduced.
Description
Technical Field
The application relates to the technical field of gas well exploitation of gas storage reservoirs, in particular to a system, a method and a device for processing gas leakage in an annulus of a gas storage reservoir.
Background
With the rapid increase of the demand of natural gas resources in China, the construction of gas storage reservoirs has become the current main means for storage and peak shaving. In the operation process of the gas storage, annular gas leakage occurs in a plurality of gas storage, and along with the occurrence of gas leakage, the integrity of a gas storage cylinder can be damaged, and the safety of the periphery of a well site can be endangered.
In the related art, when the leakage is slight, the evacuation process is performed through a valve; when the leakage is serious, the method adopts a mode of replacing the completion string for maintenance.
However, in the above method, when the leakage is slight, the leakage gas is subjected to the emptying treatment, which not only cannot slow down the harm caused by the leakage gas, but also further enlarges the gas leakage channel; when the leakage is serious, the gas storage is required to be shut in for maintenance by adopting a method of replacing a well completion pipe string, and the well repairing process is complex and the cost is high.
Inventive content data
The application relates to a gas storage annulus leakage gas treatment system, method and device, which can recycle gas storage annulus leakage gas, avoid resource waste and reduce well repair cost. The technical scheme is as follows:
in one aspect, a gas storage annulus leak gas treatment system is provided, the system comprising: the system comprises a gas production tree, an input gas pipeline, a gas production pipeline, a leakage gas recovery pipeline, control equipment and a booster pump;
the gas input pipeline is connected with a needle-shaped gate of the gas production tree and is used for inputting gas into the gas storage;
the produced gas pipeline is connected with the needle-shaped gate of the gas production tree and is used for outputting gas from the gas storage;
the leakage gas recovery pipeline is connected with a sleeve gate of the gas production tree and is used for conveying leakage gas in the gas storage;
the leakage gas recovery pipeline is connected with the produced gas pipeline;
the leakage gas recovery pipeline is connected with the input gas pipeline;
the leakage gas recovery pipeline is provided with the booster pump;
the control equipment with the booster pump electrical property links to each other for control the booster pump is right leaking gas carries out the pressure boost and handles, so that leaking gas gets into input gas pipeline or output gas pipeline.
In one possible implementation, the leakage gas recovery line comprises an annular leakage gas line, a recovery line and a return line;
the annular leakage gas pipeline is connected with a sleeve gate of the gas production tree;
the annular leakage gas pipeline is connected with the input gas pipeline through the feedback pipeline;
the annular leakage gas pipeline is connected with the produced gas pipeline through the return production pipeline.
In one possible implementation, the system further includes: a first pressure sensor, a second pressure sensor, and a third pressure sensor;
the first pressure sensor is arranged on the input gas pipeline and used for detecting the input gas pressure in the input gas pipeline;
the second pressure sensor is arranged on the annular leakage gas pipeline and used for detecting the pressure of leakage gas in the annular leakage gas pipeline;
and the third pressure sensor is arranged on the gas production pipeline and is used for detecting the pressure of the output gas in the gas production pipeline.
In a possible implementation manner, the control device is configured to control the booster pump to boost the leaking gas according to the input gas pressure and the leaking gas pressure, so that the leaking gas enters the input gas line;
or the control equipment is used for controlling the booster pump to carry out pressurization treatment on the leaked gas according to the output gas pressure and the leaked gas pressure so that the leaked gas enters the produced gas pipeline.
In a possible implementation manner, a first gate valve is arranged on the output gas pipeline, a second gate valve is arranged on the output gas pipeline, and the first gate valve and the second gate valve are different in opening and closing states.
In one possible implementation, in response to the gas reservoir being in a gas injection state, the first gate valve is in an open state and the second gate valve is in a closed state;
and responding to the gas storage in a gas production state, wherein the first gate valve is in a closed state, and the second gate valve is in an open state.
In another aspect, a method for processing gas leakage from an annulus of a gas storage facility is provided, the method being performed by a control device, the method comprising:
acquiring the working state of a gas storage;
acquiring target gas pressure and gas pressure to be regulated based on the working state of the gas storage;
and controlling a booster pump to boost the pressure of the gas to be regulated on the basis of the target gas pressure and the pressure of the gas to be regulated so that the pressure of the gas to be regulated is greater than or equal to the target gas pressure.
In one possible implementation, in response to the gas reservoir being in a gas injection state, the target gas pressure is an input gas pressure in an input gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the gas input pipeline is used for inputting gas into the gas storage; the annular leakage air pipeline is connected with the input air pipeline through a return pipeline.
In one possible implementation, in response to the gas reservoir being in a gas production state, the target gas pressure is an output gas pressure in a production gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the produced gas pipeline is used for outputting gas from the gas storage; the annular leakage gas pipeline is connected with the produced gas pipeline through a production return pipeline.
In another aspect, there is provided a gas storage annulus leakage gas processing device, which is used in a control device, the device including:
the working state acquisition module is used for acquiring the working state of the gas storage;
the gas pressure acquisition module is used for acquiring target gas pressure and gas pressure to be regulated based on the working state of the gas storage;
and the gas pressure processing module is used for controlling a booster pump to carry out pressurization processing on the gas pressure to be regulated on the basis of the target gas pressure and the gas pressure to be regulated so as to enable the gas pressure to be regulated to be greater than or equal to the target gas pressure.
In another aspect, a computer device is provided, comprising a processor and a memory, wherein at least one instruction, at least one program, a set of codes, or a set of instructions is stored in the memory, and the at least one instruction, the at least one program, the set of codes, or the set of instructions is loaded and executed by the processor to implement the method for gas storage annulus leak gas treatment provided in the embodiments of the present application.
In another aspect, a computer-readable storage medium is provided, in which at least one instruction, at least one program, a set of codes, or a set of instructions is stored, and the at least one instruction, the at least one program, the set of codes, or the set of instructions is loaded and executed by a processor to implement the method for processing gas leaking from an annulus of a gas storage.
In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to enable the computer device to execute the gas storage annulus leakage gas treatment method provided in the various optional implementation modes.
The beneficial effect that technical scheme that this application provided brought includes at least:
the utility model provides a gas storage storehouse annular space leaks gas processing system, through add the gas recovery pipeline that leaks on the basis of original input gas pipeline and output gas pipeline, controlgear and booster pump, make controlgear can carry the gas that leaks in will getting into the gas recovery pipeline that leaks again back input gas pipeline or output gas pipeline through control supercharging equipment, thereby realized the recycle to leaking gas, and then reduced the waste to gas resources, the cost of bringing because of workover is reduced simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic illustration of a process flow for gas injection and production in an underground reservoir provided by an exemplary embodiment of the present application;
FIG. 2 illustrates a schematic structural diagram of a gas production tree shown in an exemplary embodiment of the present application;
FIG. 3 illustrates a schematic diagram of a gas storage annulus leak gas treatment system according to an exemplary embodiment of the present application;
FIG. 4 is a schematic illustration of a gas storage annulus leak gas treatment system according to an exemplary embodiment of the present application;
FIG. 5 illustrates a schematic diagram of a gas storage annulus leak gas treatment system according to an exemplary embodiment of the present application;
FIG. 6 illustrates a schematic diagram of a leak gas recovery line shown in an exemplary embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a pressure profile of a gas reservoir in a gas injection state according to an exemplary embodiment of the present application;
FIG. 8 is a schematic pressure profile of a gas storage reservoir in a gas producing state according to an exemplary embodiment of the present application;
FIG. 9 illustrates a flow chart of a method for processing gas leakage from an annulus of a gas storage reservoir according to an exemplary embodiment of the present application;
FIG. 10 is a schematic illustration of a method of reservoir annulus leak gas treatment according to an exemplary embodiment of the present application;
FIG. 11 illustrates a block diagram of a reservoir annulus leak gas treatment apparatus according to an exemplary embodiment of the present application;
FIG. 12 is a block diagram illustrating the structure of a computer device according to an example embodiment.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
First, the terms referred to in the embodiments of the present application will be briefly described:
gas storage
A gas storage, i.e. a container for storing natural gas, refers to an artificial gas field or a gas reservoir, usually an underground gas storage, formed by injecting natural gas extracted from a natural gas field into an underground space capable of storing gas in a different place. Typically in close proximity to downstream natural gas user cities. The operation of the gas storage is in a year cycle, and the gas collection in winter and spring and the gas injection in summer and autumn are the operation processes of the gas storage.
Fig. 1 shows a schematic diagram of a gas injection and production process of an underground gas storage according to an exemplary embodiment of the present disclosure, as shown in fig. 1, the gas injection process refers to that when a flow rate of natural gas supplied by an upstream long transmission pipeline 110 is greater than a user usage amount of a natural gas transmission and distribution pipe network 120, the extra natural gas enters a natural gas of a gas storage process station 130, is pressurized and then is sent to various underground gas storage 140 through a manifold for storage, and a design pressure of an outlet of a pressurizing machine is generally equal to a design pressure of the underground gas storage; the gas production process refers to that in the peak period of gas consumption of the downstream natural gas transmission and distribution pipe network 120, when the upstream supply is insufficient or an accident occurs, the natural gas stored in the underground gas storage 140 is purified and pressure-regulated, and then is sent to the natural gas transmission and distribution pipe network 120 through a gathering pipe for users to use, so as to make up for the shortage of the upstream supply. Wherein the gas storage process station 130 is provided with a purification device for purifying and separating impurities, moisture, light hydrocarbon and other substances brought out along with the natural gas, and avoiding adverse effects on pipeline transportation.
Gas reservoirs are usually configured with a gas tree, i.e. the part above the tubing head in the wellhead; the gas production tree mainly comprises a main gate, a four-way valve, an oil pipe gate, a needle valve, a pressure measuring gate and a casing gate, and is a main device for opening and closing a well, adjusting pressure, adjusting air flow, performing circulating well killing, measuring pressure of a lower pressure gauge, measuring pressure of a well mouth and the like. The gas production tree has 11 gates, including 1 pressure measuring gate, 2 tubing gates, 2 needle type gates, 2 total gates and 4 casing gates, fig. 2 shows a structural schematic diagram of the gas production tree shown in an exemplary embodiment of the present application, and as shown in fig. 2, the gas production tree includes a pressure measuring gate 210, a tubing gate 220, a needle type gate 230, a total gate 240 and a casing gate 250.
The pressure measuring gate 210 is used for measuring pressure by a pressure gauge without stopping production, sampling and measuring oil pressure by an oil pressure gauge;
the tubing gate 220 is used to open and close the well (tubing production);
needle gate (needle valve) 230 is used to regulate gas well pressure and production;
the total gates 240 are generally two and are always in an open state;
the casing gate 250 is used for casing pressure measurement, casing gas production, and gas lift. The gas lift is a type of oil extraction method in which when the energy supplied by the stratum is insufficient to lift crude oil from the bottom to the ground, the oil well stops flowing by itself, and in order to continue oil production, gas (natural gas or air) is artificially pressed into the bottom of the well to make crude oil flow out of the ground.
Fig. 3 shows a schematic structural diagram of a gas storage annulus leak gas treatment system according to an exemplary embodiment of the present application, and as shown in fig. 3, the gas storage annulus leak gas treatment system includes: a gas production tree 310, an input gas line 320, a produced gas line 330, a leak gas recovery line 340, a control device 350, and a booster pump 360;
the gas input pipeline 320 is connected with a needle-shaped gate of the gas production tree 310 and is used for inputting gas into the gas storage;
the produced gas line 330 is connected to the pin gate of the gas production tree 310 for outputting gas from the gas reservoir;
the leaked gas recovery pipeline 340 is connected with a casing gate of the gas production tree 310 and is used for conveying leaked gas in the gas storage;
the leaking gas recovery line 340 is connected to the produced gas line 330;
the leak gas recovery line 340 is connected to the input gas line 320;
a booster pump 360 is provided on the leak gas recovery line 340;
the control device 350 is electrically connected to the booster pump 360 for controlling the booster pump 360 to boost the leaking gas so that the leaking gas enters the input gas line 320 or the output gas line 330.
The blow-by gas recovery line 340 includes one blow-by gas input port and two blow-by gas output ports. One of the leak gas input ports of the leak gas recovery line 340 is connected to the casing gate of the gas production tree 310, a first of the leak gas output ports of the leak gas recovery line 340 is connected to the produced gas line 330, and a second of the leak gas output ports of the leak gas recovery line 340 is connected to the input gas line 320.
In order to save pipeline resources, simplify pipeline laying and increase pipeline utilization, in the embodiment of the present application, there is a partial pipeline coincidence between the input gas pipeline 320 and the produced gas pipeline 330, and a partial pipeline coincidence between the leaked gas recovery pipeline 340 and the produced gas pipeline 330, in fig. 3, the complete input device pipeline 320 and the leaked gas recovery pipeline 340 are shown, fig. 4 is a schematic structural diagram of a gas storage annulus leaked gas processing system shown in an exemplary embodiment of the present application, which shows a schematic diagram of the produced gas pipeline 330, and as shown in fig. 4, the produced gas pipeline 330 includes a partial pipeline 331 coinciding with the input gas pipeline and a partial pipeline 332 coinciding with the leaked gas recovery pipeline.
In a possible implementation manner, a first gate valve is arranged on the output gas pipeline, a second gate valve is arranged on the output gas pipeline, and the opening and closing states of the first gate valve and the second gate valve are different.
In one possible implementation, in response to the gas reservoir being in a gas injection state, the first gate valve is in an open state and the second gate valve is in a closed state;
and responding to the gas storage in the gas production state, wherein the first gate valve is in a closed state, and the second gate valve is in an open state.
In one possible implementation, the leaking gas recovery line comprises an annular leaking gas line, a recovery line and a return line;
the annular leakage gas pipeline is connected with a sleeve gate of a gas production tree;
the annular leakage gas pipeline is connected with the input gas pipeline through a return pipeline;
the annular leakage gas pipeline is connected with a production gas pipeline through a production return pipeline.
In one possible implementation, the system further includes: a first pressure sensor, a second pressure sensor, and a third pressure sensor;
the first pressure sensor is arranged on the input gas pipeline and used for detecting the input gas pressure in the input gas pipeline;
the second pressure sensor is arranged on the annular leakage gas pipeline and used for detecting the pressure of leakage gas in the annular leakage gas pipeline;
the third pressure sensor is arranged on the gas production pipeline and used for detecting the pressure of output gas in the gas production pipeline.
In one possible implementation, the control device is used for controlling the booster pump to boost the leakage gas according to the input gas pressure and the leakage gas pressure, so that the leakage gas enters the input gas pipeline;
the control device is used for controlling the booster pump to carry out boosting treatment on the leaked gas according to the output gas pressure and the leaked gas pressure so that the leaked gas enters the produced gas pipeline.
To sum up, the gas storage storehouse annular space leaks gas processing system that this application embodiment provided is through addding on the basis at original input gas pipeline and output gas pipeline and leaks gas recovery pipeline, controlgear and booster pump, make controlgear can carry the gaseous reinfusion return input gas pipeline or the output gas pipeline of leakage in will getting into leakage gas recovery pipeline through control supercharging equipment, thereby realized the recycle to leaking gas, and then reduced the waste to gas resources, reduced the expense because of the workover engineering brings simultaneously.
FIG. 5 is a schematic diagram of a gas storage annulus leak gas treatment system according to an exemplary embodiment of the present application, and as shown in FIG. 5, the gas storage annulus leak gas treatment system includes a gas production tree 510, an input gas line 520, a produced gas line 530, a leak gas recovery line 540, a control device 550, and a booster pump 560;
wherein the gas input line 520 is connected to a needle gate of the gas production tree 510 for inputting gas into the gas storage;
the produced gas line 530 is connected to the needle gate of the gas production tree 510 for outputting gas from the reservoir;
the leaking gas recovery pipeline 540 is connected to a casing gate of the gas production tree 510 for transporting leaking gas in the gas storage;
the leaking gas recovery line 540 is connected to the produced gas line 530;
the leaking gas recovery line 540 is connected to the input gas line 520;
a booster pump 560 is provided in the leak gas recovery line 540;
the control device 550 is electrically connected to the booster pump 560, and is used for controlling the booster pump 560 to boost the leaking gas, so that the leaking gas enters the input gas pipeline 520 or the output gas pipeline 530.
In a possible implementation, the input gas pipeline and the output gas pipeline are connected to the same needle-type gate of the gas production tree, or the input gas pipeline and the output gas pipeline are connected to different needle-type gates of the gas production tree, in order to increase the utilization rate of the pipelines, in this application, a connection mode that the input gas pipeline and the output gas pipeline are connected to the same needle-type gate of the gas production tree is adopted, as shown in fig. 5, the input gas pipeline 520 and the output gas pipeline 530 are both connected to the needle-type gate 511 of the gas production tree 510, and the input gas pipeline and the output gas pipeline are partially overlapped.
In one possible implementation, fig. 6 shows a schematic diagram of the leakage gas recovery line shown in an exemplary embodiment of the present application, and as shown in fig. 6, the leakage gas recovery line 540 includes an annular leakage gas line 541, a recovery line 543, and a return line 542;
as can be seen in fig. 5, the annular leakage gas pipeline 541 is connected to the casing gate 512 of the gas production tree 510;
the annulus leak gas line 541 is connected to the input gas line 520 by a return line 542;
the annulus leak gas line 541 is connected to the production gas line 530 by a return line 543.
The feedback pipeline 542 includes two portions, namely a pipeline 542-1 and a pipeline 542-2, in which the feedback pipeline 542 partially overlaps with the recovery pipeline 543, and the pipeline 542-1 is a portion of the produced gas pipeline 530, so that when the pipelines are arranged, the length of the pipeline to be deployed can be saved, thereby reducing the construction difficulty and saving the cost.
In a possible implementation manner, the booster pump is disposed at the intersection of the annular leakage gas pipeline and the production recovery pipeline, or the booster pump can be used as a node to divide the leakage gas recovery pipeline into two parts, namely the annular leakage pipeline and the production recovery pipeline. The gas in the annular leakage pipeline is output from the annular space of the gas production tree and is not pressurized, and the gas entering the return pipeline is pressurized by the booster pump.
In a possible implementation manner, the system further includes: a first pressure sensor, a second pressure sensor, and a third pressure sensor;
the first pressure sensor is arranged on the input gas pipeline and used for detecting the input gas pressure in the input gas pipeline;
the second pressure sensor is arranged on the annular leakage gas pipeline and is used for detecting the pressure of leakage gas in the annular leakage gas pipeline;
the third pressure sensor is arranged on the gas production pipeline and used for detecting the pressure of output gas in the gas production pipeline.
In one possible implementation, the location of each gas monitoring point needs to be determined before each pressure sensor is placed.
In one possible embodiment, different pressure profiles are established in different operating states of the gas reservoir, wherein a pressure profile is a cross-sectional view of the cross-sectional composition of the individual lines.
When the gas storage is in the gas injection state, firstly, an input gas pipeline pressure profile is created and set as a primary pressure profile a, secondly, a feedback gas pipeline pressure profile is created and set as a secondary pressure profile b, and finally, an input leakage gas pipeline pressure profile (namely, an annular leakage gas pipeline pressure profile) is created and set as a secondary pressure profile c. Fig. 7 is a schematic diagram of a pressure profile of a gas storage according to an exemplary embodiment of the present application in a gas injection state, where, as shown in fig. 7, a pressure junction 710 of a primary pressure profile a and a secondary pressure profile b thereof is established as a first pressure balance point, a pressure junction 720 of a secondary pressure profile b and a secondary pressure profile c thereof is established as a second pressure balance point, an input leaking gas monitoring point 730 (i.e., a location where a second pressure sensor is disposed) is disposed on an input leaking gas pipeline, and an adjustable booster pump is disposed behind the input leaking gas monitoring point (i.e., the second pressure balance point); a return gas monitoring site 740 (i.e., the first pressure sensor set-up site) is located after the input gas line to return gas line connection point (i.e., the first pressure equalization point). The recovery process of the input leakage gas is the process that the leakage gas enters the input gas pipeline through the annular gas leakage pipeline (input gas leakage pipeline) and the feedback pipeline.
When the gas storage is in a gas production state, firstly, a production gas pipeline pressure profile is created and set as a primary pressure profile d, secondly, a recovery gas pipeline pressure profile is created and set as a secondary pressure profile e, and finally, a production leakage gas pipeline pressure profile (namely an annular leakage gas pipeline pressure profile) is created and set as a secondary pressure profile f. Fig. 8 is a schematic diagram of a pressure profile of a gas storage according to an exemplary embodiment of the present application in a gas production state, where, as shown in fig. 8, a pressure junction 810 between a first pressure profile d and a second pressure profile e thereof is established as a third pressure balance point, a pressure junction 820 between the second pressure profile e thereof and a second pressure profile f thereof is established as a fourth pressure balance point, a product leakage gas monitoring site 830 (i.e., a site where a second pressure sensor is disposed) is disposed on a product leakage gas pipeline, and an adjustable booster pump is disposed behind the product leakage gas monitoring site (i.e., the fourth pressure balance point); an regenerated gas monitoring site 840 (i.e., a site where the third pressure sensor is located) is located after the connection point of the produced gas line and the regenerated gas line (i.e., the third pressure balance point). The recovery process of the produced leakage gas is the process that the leakage gas enters the produced gas pipeline through the annular gas leakage pipeline and the produced gas pipeline.
As can be seen from the above description, in the embodiments of the present application, the input leaking gas monitoring site and the output leaking gas monitoring site may be the same monitoring site.
In one possible implementation, the control device is used for controlling the booster pump to boost the leaked gas according to the input gas pressure and the leaked gas pressure so that the leaked gas enters the input gas pipeline;
the control device is used for controlling the booster pump to boost the leaked gas according to the output gas pressure and the leaked gas pressure so that the leaked gas enters the produced gas pipeline.
In one possible implementation manner, the control device performs pressurization processing on the leakage gas by controlling a booster pump so that the pressurized leakage gas pressure is greater than or equal to the input gas pressure, so that the leakage gas enters the gas transmission pipeline;
or the control device performs pressurization treatment on the leakage gas by controlling a booster pump, so that the pressurized leakage gas pressure is greater than or equal to the produced gas pressure, and the leakage gas enters the produced gas pipeline.
In a possible implementation manner, as shown in fig. 5, a first gate valve 521 is disposed on the output gas pipeline 520, and a second gate valve 531 is disposed on the output gas pipeline 530, wherein the first gate valve 521 and the second gate valve 531 are in different opening and closing states, that is, when the first gate valve 521 is in an open state, the second gate valve 531 is in a closed state, and when the first gate valve 521 is in a closed state, the second gate valve 531 is in an open state, so as to control the gas storage to be in different working states.
That is, in response to the gas storage being in a gas injection state, the first gate valve is in an open state and the second gate valve is in a closed state;
and responding to the gas storage in the gas production state, wherein the first gate valve is in a closed state, and the second gate valve is in an open state.
In one possible implementation, a multi-way valve is provided on the line 542-1 of the return line 542, or alternatively, a multi-way valve 570 is provided at a non-overlapping portion of the produced gas line 530 and the output gas line 520, and the multi-way valve 570 is used to control the opening or closing of the return line or the produced gas line.
To sum up, the gas storage annular space that this application embodiment provided leaks gas processing system through add on the basis at original input gas pipeline and output gas pipeline and leak gas recovery pipeline, controlgear and booster pump for controlgear can carry the gas that leaks in getting into the gas recovery pipeline that leaks again back input gas pipeline or the output gas pipeline through control supercharging equipment, thereby realized the recycle to leaking gas, and then reduced the waste to gas resources, reduced the expense that brings because of workover engineering simultaneously.
Fig. 9 shows a flowchart of a method for processing gas leakage from an annulus of a gas storage facility, which may be performed by a control device, which may be implemented as any one of the control devices of fig. 3 to 8, according to an exemplary embodiment of the present disclosure, the method including:
And 920, acquiring the target gas pressure and the pressure of the gas to be regulated based on the working state of the gas storage.
And 930, controlling the booster pump to perform boosting treatment on the pressure of the gas to be regulated based on the pressure of the target gas and the pressure of the gas to be regulated, so that the pressure of the gas to be regulated is greater than or equal to the pressure of the target gas.
In one possible implementation, in response to the reservoir being in a gas injection state, the target gas pressure is an input gas pressure in the input gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the gas input pipeline is used for inputting gas into the gas storage; the annular leakage gas pipeline is connected with the input gas pipeline through a return pipeline.
The control device responds to the gas storage in a gas injection state, acquires a first gas pressure in an input gas pipeline, acquires a second gas pressure in an annular leakage gas pipeline, and controls the booster pump to boost the second gas pressure based on the first gas pressure and the second gas pressure so that the second gas pressure is greater than or equal to the first gas pressure.
In one possible implementation, in response to the gas reservoir being in a gas production state, the target gas pressure is an output gas pressure in a production gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the produced gas pipeline is used for outputting gas from the gas storage; the annular leakage gas pipeline is connected with a produced gas pipeline through a production return pipeline.
The control equipment responds to the gas storage in a gas production state, and obtains a third gas pressure in a gas production pipeline; and obtaining a fourth gas pressure in the annulus leakage gas line; and controlling the booster pump to perform boosting treatment on the fourth gas pressure based on the third gas pressure and the fourth gas pressure so that the fourth gas pressure is greater than or equal to the third gas pressure.
In summary, according to the method for processing the annular leakage gas of the gas storage reservoir provided by the embodiment of the present application, when the gas storage reservoir is in a gas injection state, the gas in the annular leakage gas pipeline is pressurized based on the gas pressure in the input gas pipeline and the gas pressure in the annular leakage gas pipeline, so that the leakage gas returns to the input gas pipeline again; when the gas storage is in a gas production state, pressurizing gas in the annular leakage gas pipeline based on the gas pressure in the gas production pipeline and the gas pressure in the annular leakage gas pipeline so as to enable the leakage gas to return to the gas production pipeline again; therefore, the leaked gas is recycled, the waste of gas resources is reduced, and the expense caused by well repair engineering is reduced.
Fig. 10 is a schematic diagram illustrating a method for processing gas leakage from an annulus of a gas storage according to an exemplary embodiment of the present disclosure, and as shown in fig. 10, the method for processing gas leakage from an annulus of a gas storage may be divided into two parts according to different working conditions of the gas storage. When input gas runs (namely a gas storage is in a gas injection state), closing the gate valve No. 2, opening the gate valve No. 1, adjusting the multi-way valve to open a feedback pipeline, starting to input gas into the shaft 1010, simultaneously capturing annular leakage gas pipeline pressure by the pressure sensor 1, capturing input pipeline pressure by the pressure sensor 2, acquiring annular leakage gas pipeline pressure and input pipeline pressure by control equipment, sending an adjusting instruction to the adjustable booster pump, and performing pressure compensation (pressurization processing) on the annular leakage gas pipeline pressure by the adjustable booster pump to enable the leakage gas to enter the gas pipeline and then return to the shaft; when the production gas operation (when the gas storage is in the gas production state promptly), close 1 gate valve, open 2 gate valves, adjust the multi-ported valve so that the return production pipeline is opened, begin to export gas from pit shaft 1010, simultaneously, pressure sensor 1 catches the annular space and reveals the trachea line pressure, pressure sensor 3 catches the production trachea line pressure, controlgear acquires the annular space and reveals trachea line pressure and production trachea line pressure, send adjustment command to the booster pump, make the booster pump reveal the trachea line pressure to the annular space and carry out pressure compensation (pressure boost processing), make the gas of revealing get into the production trachea line, and then the production gas.
Fig. 11 shows a block diagram of a gas storage annulus leakage gas treatment device according to an exemplary embodiment of the present application, which may be applied to a control device, which may be implemented as any one of the control devices in fig. 3 to 8, and which includes:
the working state acquisition module 1110 is used for acquiring the working state of the gas storage;
a gas pressure obtaining module 1120, configured to obtain a target gas pressure and a gas pressure to be adjusted based on an operating state of the gas storage;
and a gas pressure processing module 1130, configured to control the booster pump to perform boosting processing on the pressure of the gas to be regulated based on the target gas pressure and the pressure of the gas to be regulated, so that the pressure of the gas to be regulated is greater than or equal to the target gas pressure.
In summary, the gas processing device for annular leakage of the gas storage reservoir provided by the embodiment of the present application is applied to the control device, and when the gas storage reservoir is in a gas injection state, the gas in the annular leakage gas pipeline is pressurized based on the gas pressure in the input gas pipeline and the gas pressure in the annular leakage gas pipeline, so that the leakage gas returns to the input gas pipeline again; when the gas storage is in a gas production state, pressurizing gas in the annular leakage gas pipeline based on the gas pressure in the gas production pipeline and the gas pressure in the annular leakage gas pipeline so as to enable the leakage gas to return to the gas production pipeline again; therefore, the leaked gas is recycled, the waste of gas resources is reduced, and the expense caused by well repair engineering is reduced.
Fig. 12 is a block diagram illustrating the structure of a computer device 1200 according to an example embodiment. The computer device may be a control device, such as a smart phone, a tablet computer, a laptop computer, or a desktop computer, for executing the gas storage annulus leakage gas treatment method provided in the embodiment of the present application. Computer device 1200 may also be referred to by other names such as user equipment, portable terminals, laptop terminals, desktop terminals, and the like.
Generally, computer device 1200 includes: a processor 1201 and a memory 1202.
The processor 1201 may include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor 1201 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 1201 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 1201 may be integrated with a GPU (Graphics Processing Unit) that is responsible for rendering and drawing content that the display screen needs to display. In some embodiments, the processor 1201 may further include an AI (Artificial Intelligence) processor for processing a computing operation related to machine learning.
In some embodiments, the computer device 1200 may further optionally include: a peripheral interface 1203 and at least one peripheral. The processor 1201, memory 1202, and peripheral interface 1203 may be connected by buses or signal lines. Various peripheral devices may be connected to peripheral interface 1203 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 1204, display 1205, camera assembly 1206, audio circuitry 1207, positioning assembly 1208, and power supply 1209.
The peripheral interface 1203 may be used to connect at least one peripheral associated with I/O (Input/Output) to the processor 1201 and the memory 1202. In some embodiments, the processor 1201, memory 1202, and peripheral interface 1203 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 1201, the memory 1202 and the peripheral device interface 1203 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
In some embodiments, computer device 1200 also includes one or more sensors 1210. The one or more sensors 1210 include, but are not limited to: acceleration sensor 1211, gyro sensor 1212, pressure sensor 1213, fingerprint sensor 1214, optical sensor 1215, and proximity sensor 1216.
Those skilled in the art will appreciate that the configuration shown in FIG. 12 is not intended to be limiting of the computer device 1200 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.
In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as a memory including at least one instruction, at least one program, set of codes, or set of instructions, executable by a processor to perform all or part of the steps of the method shown in any of the embodiments of fig. 9 or 10 described above is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Embodiments of the present application also provide a computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The computer instructions are read by a processor of a computer device from a computer readable storage medium, and the computer instructions are executed by the processor to cause the computer device to perform all or part of the steps of the method for treating the gas leakage from the annulus of the gas storage reservoir as shown in any one of the embodiments of fig. 9 or fig. 10.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A gas storage annulus leak gas handling system, the system comprising: the system comprises a gas production tree, an input gas pipeline, a gas production pipeline, a leakage gas recovery pipeline, control equipment and a booster pump;
the gas input pipeline is connected with a needle-shaped gate of the gas production tree and is used for inputting gas into the gas storage;
the produced gas pipeline is connected with the needle-shaped gate of the gas production tree and is used for outputting gas from the gas storage;
the leakage gas recovery pipeline is connected with a sleeve gate of the gas production tree and is used for conveying leakage gas in the gas storage;
the leakage gas recovery pipeline is connected with the produced gas pipeline;
the leakage gas recovery pipeline is connected with the input gas pipeline;
the leakage gas recovery pipeline is provided with the booster pump;
the control equipment with the booster pump electrical property links to each other for control the booster pump is right leaking gas carries out the pressure boost and handles, so that leaking gas gets into input gas pipeline or output gas pipeline.
2. The system of claim 1, wherein the leak-off recovery line comprises an annulus leak-off gas line, a return line, and a return line;
the annular leakage gas pipeline is connected with a sleeve gate of the gas production tree;
the annular leakage gas pipeline is connected with the input gas pipeline through the feedback pipeline;
the annular leakage gas pipeline is connected with the produced gas pipeline through the return production pipeline.
3. The system of claim 2, further comprising: a first pressure sensor, a second pressure sensor, and a third pressure sensor;
the first pressure sensor is arranged on the input gas pipeline and used for detecting the input gas pressure in the input gas pipeline;
the second pressure sensor is arranged on the annular leakage gas pipeline and used for detecting the pressure of leakage gas in the annular leakage gas pipeline;
and the third pressure sensor is arranged on the gas production pipeline and used for detecting the pressure of the output gas in the gas production pipeline.
4. The system of claim 3, wherein the control device is configured to control the booster pump to boost the leaking gas based on the input gas pressure and the leaking gas pressure, such that the leaking gas enters the input gas line;
or the control device is used for controlling the booster pump to boost the leaked gas according to the output gas pressure and the leaked gas pressure, so that the leaked gas enters the produced gas pipeline.
5. The system of claim 1, wherein the output gas line is provided with a first gate valve, the output gas line is provided with a second gate valve, and the first gate valve and the second gate valve are in different opening and closing states.
6. The system of claim 5, wherein in response to the reservoir being in a gas injection state, the first gate valve is in an open state and the second gate valve is in a closed state;
and responding to the gas storage in a gas production state, wherein the first gate valve is in a closed state, and the second gate valve is in an open state.
7. A method of processing gas leaking from an annulus of a gas storage facility, the method being performed by a control device, the method comprising:
acquiring the working state of a gas storage;
acquiring target gas pressure and gas pressure to be regulated based on the working state of the gas storage;
and controlling a booster pump to boost the pressure of the gas to be regulated on the basis of the target gas pressure and the pressure of the gas to be regulated so that the pressure of the gas to be regulated is greater than or equal to the target gas pressure.
8. The method of claim 7, wherein in response to the gas reservoir being in a gas injection state, the target gas pressure is an input gas pressure in an input gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the gas input pipeline is used for inputting gas into the gas storage; the annular leakage air pipeline is connected with the input air pipeline through a return pipeline.
9. The method of claim 7, wherein in response to the gas reservoir being in a gas production state, the target gas pressure is an output gas pressure in a produced gas line; the gas pressure to be regulated is the leakage gas pressure in the annular leakage gas pipeline; the produced gas pipeline is used for outputting gas from the gas storage; the annular leakage gas pipeline is connected with the produced gas pipeline through a production return pipeline.
10. An annular leakage gas treatment device for a gas storage reservoir, which is applied to control equipment and comprises:
the working state acquisition module is used for acquiring the working state of the gas storage;
the gas pressure acquisition module is used for acquiring target gas pressure and gas pressure to be regulated based on the working state of the gas storage;
and the gas pressure processing module is used for controlling a booster pump to carry out pressurization processing on the gas pressure to be regulated on the basis of the target gas pressure and the gas pressure to be regulated so as to enable the gas pressure to be regulated to be greater than or equal to the target gas pressure.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172717A (en) * | 1989-12-27 | 1992-12-22 | Otis Engineering Corporation | Well control system |
| US20160312606A1 (en) * | 2015-04-25 | 2016-10-27 | James N. McCoy | Method for detecting leakage in an underground hydrocarbon storage cavern |
| CN108507734A (en) * | 2017-02-28 | 2018-09-07 | 中国石油天然气股份有限公司 | Method for detecting sealing performance of salt cavern |
| CN109236281A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | A kind of gas storage and natural gas well annular pressure detection device and method |
| CN110388231A (en) * | 2018-04-18 | 2019-10-29 | 中国石油天然气股份有限公司 | Cavity forming device and method for salt cavern gas storage |
-
2021
- 2021-01-04 CN CN202110002241.XA patent/CN114718511B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172717A (en) * | 1989-12-27 | 1992-12-22 | Otis Engineering Corporation | Well control system |
| US20160312606A1 (en) * | 2015-04-25 | 2016-10-27 | James N. McCoy | Method for detecting leakage in an underground hydrocarbon storage cavern |
| CN108507734A (en) * | 2017-02-28 | 2018-09-07 | 中国石油天然气股份有限公司 | Method for detecting sealing performance of salt cavern |
| CN110388231A (en) * | 2018-04-18 | 2019-10-29 | 中国石油天然气股份有限公司 | Cavity forming device and method for salt cavern gas storage |
| CN109236281A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | A kind of gas storage and natural gas well annular pressure detection device and method |
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