CN109915099B - High-pressure water path control device and hydrofracturing ground stress measurement system - Google Patents
High-pressure water path control device and hydrofracturing ground stress measurement system Download PDFInfo
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- CN109915099B CN109915099B CN201910291544.0A CN201910291544A CN109915099B CN 109915099 B CN109915099 B CN 109915099B CN 201910291544 A CN201910291544 A CN 201910291544A CN 109915099 B CN109915099 B CN 109915099B
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Abstract
The utility model belongs to the technical field of the crustal stress measurement technique and specifically relates to a high pressure water route controlling means and hydrofracturing crustal stress measurement system is related to, and high pressure water route controlling means includes: a plurality of sections of high-pressure rubber pipes and a rigid setting pipeline; any two adjacent sections of high-pressure rubber pipes are connected through a sealing joint to form a fracturing pipeline; the fracturing pipeline is used for conveying fracturing fluid into a fracturing cavity formed between the packer and the well wall; the rigid setting pipeline is used for conveying setting liquid to a setting cavity of the packer. Through the high-pressure water path control device that this application provided, adopted drilling rod or other rigid pipe to be used for carrying fracturing fluid to the fracturing intracavity as the fracturing pipeline among the avoided prior art, and the leakproofness of rigid pipe junction is relatively poor, leads to in the hydrofracturing ground stress measurement process, fracturing fluid reveals easily, influences the accuracy of the pressure parameter that the test obtained.
Description
Technical Field
The application relates to the technical field of ground stress measurement, in particular to a high-pressure water circuit control device and a hydraulic fracturing ground stress measurement system.
Background
At present, a hydrofracturing ground stress measuring system in the prior art is generally divided into a single-pipe hydrofracturing ground stress measuring system and a double-pipe hydrofracturing ground stress measuring system, wherein the single-pipe hydrofracturing ground stress measuring system utilizes a drill rod or a high-pressure rubber pipe as a high-pressure water passage, when high-pressure water reaches an underground measuring position, the high-pressure water passage is controlled by an underground high-pressure water passage push-pull device, so that the functions of packer setting, packer section fracturing, underground water drainage and the like are respectively realized, the single-pipe hydrofracturing ground stress measuring system is simple in operation and high in measuring efficiency, but the pressure of a setting cavity and the pressure section cannot be monitored simultaneously, and the high-pressure pipeline is easily influenced by underground slurry and impurities to cause blockage.
The double-pipe hydrofracturing ground stress measuring system is used for setting an underground packer by using a high-pressure rubber pipe, then the high-pressure passage of the drill rod is utilized to fracture the packing section, the two paths of water paths of setting and fracturing are not communicated with each other, are isolated from each other and do not influence each other, and the method is widely applied, the existing double-pipe hydrofracturing ground stress measurement system utilizes a high-pressure rubber pipe to seal an underground packer, a water drainage device is additionally arranged on the high-pressure rubber pipe to unseal the packer, a drill rod is utilized to seal a high-pressure water path to fracture a sealed section, however, due to the characteristic that the high-pressure rubber pipe is a flexible pipe, the difficulty of additionally installing a water draining device on the high-pressure rubber pipe and completing water draining operation is high, and in addition, due to the fact that the drill rod is a rigid pipe, the sealing effect of the connection between the drill rod and the drill rod is poor, the overall sealing performance of the fracturing pipeline is low, and the accuracy of a pressure measurement data result is affected.
Disclosure of Invention
The application aims to provide a high pressure water circuit controlling means and hydrofracturing ground stress measurement system to solve to a certain extent that the utilization high pressure rubber tube way that exists among the prior art sets up to seal to packer in the pit and is difficult to accomplish the operation of sluicing and utilize the drilling rod of rigidity as high pressure fracturing pipeline, lead to fracturing pipeline sealing performance low, the inaccurate technical problem of test result.
The application provides a high pressure water circuit controlling means includes: a plurality of sections of high-pressure rubber pipes and a rigid setting pipeline; any two adjacent sections of the high-pressure rubber pipes are connected through a sealing joint to form a fracturing pipeline; the fracturing pipeline is used for conveying fracturing fluid into a fracturing cavity formed between the packer and the well wall; the rigid setting pipeline is used for conveying setting liquid to a setting cavity of the packer.
In the above technical solution, further, the rigid setting pipeline includes a setting pipe, a valve body and a valve core rod; the valve body is of an internal hollow structure, one end of the valve core rod penetrates through the inside of the valve body, and the valve core rod can move up and down in the valve body relative to the valve body; the setting pipe is connected with the valve core rod.
In any of the above technical solutions, further, the valve body is provided with a water drain opening, and the water drain opening is communicated with the hoistway.
In any of the above technical solutions, further, the valve core rod is provided with a water outlet communicated with the setting pipe; the interior of the setting pipe can be communicated with the water outlet and the water outlet in sequence, and is used for enabling water in the setting pipe to flow into the well.
In any of the above technical solutions, further, the rigid setting pipeline further includes a high-pressure water channel, and the high-pressure water channel is disposed inside the valve body and can be communicated with the water outlet of the valve core rod.
In any of the above technical solutions, further, a high-pressure joint is disposed at one end of the fracturing pipeline extending into the hoistway, and the fracturing pipeline is connected with the fracturing cavity through the high-pressure joint.
In any one of the above technical solutions, further, a groove is formed in the inner wall of the valve body, a sealing ring is disposed in the groove, and the sealing ring is used for preventing water in the hoistway from entering the high-pressure water channel.
In any of the above technical solutions, further, the high-pressure water path control device further includes a connecting pipe, and the high-pressure water path is connected with the setting cavity of the packer through the connecting pipe.
In any of the above technical solutions, further, the setting pipe is a drill pipe.
The application also provides a hydrofracturing ground stress measurement system, including the high pressure water circuit controlling means of any one above-mentioned technical scheme, therefore, have this high pressure water circuit controlling means's whole beneficial technological effect, here, no longer give consideration to repeatedly.
Compared with the prior art, the beneficial effect of this application is:
the application provides a high pressure water route controlling means includes: a plurality of sections of high-pressure rubber pipes and a rigid setting pipeline; the sealing joint comprises a sealing male joint and a sealing female joint, the sealing male joint is matched with the sealing female joint and can be in sealing connection with the sealing female joint, the sealing male joint is arranged at one end of any section of high-pressure rubber pipe, and the sealing female joint is arranged at the other end, opposite to the high-pressure rubber pipe, so that any two sections of high-pressure rubber pipes are in sealing connection through the sealing male joint and the sealing female joint, the number of the corresponding high-pressure rubber pipes is selected according to the depth of a well, and the whole fracturing pipeline formed by sequentially connecting the multiple sections of high-pressure rubber pipes has good sealing performance; the fracturing pipeline is communicated with a fracturing cavity formed between the packer and the well wall, and fracturing fluid can be conveyed downwards to the fracturing cavity in the well through the fracturing pipeline; the rigid setting pipeline is communicated with a setting cavity of the packer and used for conveying setting liquid downwards to the setting cavity of the packer in the well to finish setting operation.
It is thus clear that the high pressure water route controlling means that this application provided, the high pressure rubber tube that adopts to have sealing joint connects and extends and form the fracturing pipeline, it is used for carrying fracturing fluid to the fracturing intracavity that forms between packer and the well wall to avoid adopting drilling rod or other rigid tube to connect the back among the prior art, but adopt the high pressure rubber tube that has sealing joint to connect in order and form the fracturing pipeline, make the fracturing pipeline have fine leakproofness, and then can avoid the pressurization in-process fracturing fluid to reveal, thereby can improve the accuracy of test result data. In addition, adopt the rigidity to sit and seal the pipeline and sit and seal, through wholly being rigid structure, be convenient for put this high pressure water circuit controlling means wholly to assigned position department in the well down, and can accomplish the operation of sluicing through the self structure of rigidity seat pipeline, and then carry out the deblocking to the packer, need not install the sluicing device additional extraordinarily, reduce the operation degree of difficulty, improved work and efficiency of software testing.
The application provides a hydrofracturing ground stress measurement system, including the aforesaid high pressure water route controlling means, therefore, set up and fracturing through this high pressure water route controlling means, the sealed effect of fracturing pipeline has been improved, and then the accuracy of the result parameter that has shown to improve the well internal pressure test experiment, set up and the sluicing deblocking through the concrete structure of rigidity setting pipeline, avoid installing the operation that the sluicing device was accomplished to set up and the deblocking additional on the hose, reduce actual operation's the degree of difficulty and complexity, the efficiency of software testing is improved, still alleviate operating personnel's the work degree of difficulty, reduce its work load.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic position diagram of a high-pressure waterway control device provided by an embodiment of the present application in a hoistway;
fig. 2 is a schematic structural view of a high-pressure waterway control device provided in the embodiment of the present application in a setting state;
fig. 3 is a schematic structural diagram of a high-pressure water path control device in an unsealing state according to an embodiment of the present application;
FIG. 4 is an enlarged schematic view of the high pressure water circuit control device provided in FIG. 2 at A;
fig. 5 is an enlarged schematic structural diagram of the high-pressure waterway control device provided in fig. 3 at a point B.
Reference numerals:
1-rigid setting pipeline, 101-setting pipe, 102-valve body, 1021-water outlet, 103-valve core rod, 1031-water outlet, 2-fracturing pipeline, 201-high-pressure rubber pipe, 202-high-pressure joint, 3-high-pressure water channel, 4-sealing ring, 5-connecting pipe, 6-packer, 601-setting cavity, 602-fracturing cavity and 7-well.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
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 application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The high-pressure waterway control device and the hydraulic fracturing ground stress measuring system according to some embodiments of the present application are described below with reference to fig. 1 to 5.
Referring to fig. 1 to 3, an embodiment of the present application provides a high pressure water line control apparatus including: a plurality of sections of high-pressure rubber pipes 201 and a rigid setting pipeline 1; any two sections of high-pressure rubber pipes 201 are connected through a sealing joint to form a fracturing pipeline 2; the fracturing pipeline 2 is communicated with a fracturing cavity 602 formed between the packer 6 and the well wall and is used for conveying fracturing fluid into the fracturing cavity 602; the rigid setting pipeline 1 is communicated with a setting cavity 601 of the packer 6 and is used for conveying setting liquid into the setting cavity 601.
The application provides a high pressure water route controlling means includes: a plurality of sections of high-pressure rubber pipes 201 and a rigid setting pipeline 1; the sealing joint comprises a sealing male joint and a sealing female joint, the sealing male joint is matched with the sealing female joint and can be in sealing connection with the sealing female joint, the sealing male joint is arranged at one end of any section of the high-pressure rubber pipe 201, and the sealing female joint is arranged at the other end, opposite to the other end, of the high-pressure rubber pipe 201, so that any two sections of the high-pressure rubber pipes 201 are in sealing connection through the sealing male joint and the sealing female joint, the number of the corresponding high-pressure rubber pipes 201 is selected according to the depth of the well 7, and the whole fracturing pipeline 2 formed by sequentially connecting the multiple sections of the high-pressure rubber pipes 201 has; the fracturing pipeline 2 is communicated with a fracturing cavity 602 formed between the packer 6 and a well wall, and fracturing fluid can be conveyed to the fracturing cavity 602 through the fracturing pipeline 2, so that the packer 6 can perform fracturing in a well 7; the rigid setting pipeline 1 is communicated with a setting cavity 601 of the packer 6 and is used for conveying setting liquid downwards into the setting cavity 601 of the packer 6 in the well 7 to finish setting operation.
It is visible, the high pressure water route controlling means that this application provided, adopt the high pressure rubber pipe 201 that has sealing joint to connect and extend and form fracturing pipeline 2, it is used for carrying fracturing fluid to the fracturing chamber 602 that forms between packer 6 and the well wall to adopt drilling rod or other rigid pipe to connect the back among the prior art to avoid, the leakproofness of rigid pipe junction is relatively poor, but adopt the high pressure rubber pipe 201 that has sealing joint to connect in order and form fracturing pipeline 2, make fracturing pipeline 2 have fine leakproofness, and then can avoid fracturing fluid to reveal among the fracturing process, thereby can improve the accuracy of test result data. In addition, adopt rigidity setting pipeline 1 to sit and seal, through wholly being the rigid structure, be convenient for put this high pressure water circuit controlling means wholly to appointed position department in well 7 down, and can accomplish the operation of sluicing through rigidity setting pipeline 1's self structure, and then carry out the deblocking to packer 6, need not install the sluicing device additional extraordinarily, reduce the operation degree of difficulty, work and efficiency of software testing are improved, and test through two way pipelines, can monitor the pressure of setting section and fracturing section simultaneously, need not carry out analysis and judgment to various complicated position states in the pit, the success rate of test and the accuracy of measuring result have been improved greatly.
Wherein, optionally, high-pressure rubber tube 201 is the common steel wire winding rubber tube among the prior art, certainly, not only be limited to this, can bear huge pressure and pressure differential, guarantee fracturing work goes on smoothly, and high-pressure rubber tube 201 has the sealing joint rather than the adaptation, can carry out sealing connection between the high-pressure rubber tube 201, avoid adopting other pipelines, when the drilling rod acts as fracturing pipeline 2, connect through connected modes such as screw thread screwing between each drilling rod, lead to the hookup location leakproofness poor, and then lead to pressure to reveal, influence the accuracy of test result.
Wherein, optionally, the setting liquid is water which exerts certain pressure according to setting conditions.
Optionally, the fracturing fluid is high-pressure water which increases the water pressure to a preset value according to the fracturing conditions.
Optionally, the high-pressure water path control device is used for setting and fracturing through two pipelines respectively, pressurizing paths of the two pipelines are independent, and the two pipelines are not affected by pressure difference, so that the high-pressure water path control device is suitable for clear water drilling or slurry drilling with shallow water level and is also suitable for clear water drilling, slurry drilling and dry drilling with deep water level compared with the prior art.
Optionally, the packer 6 is a packer commonly used in the prior art, and the inside of the packer includes a plurality of chambers for sealing an annulus between the outside of the casing and the well 7 to form a bridge plug and isolate a test zone.
In one embodiment of the present application, preferably, as shown in fig. 2 and 3, the rigid setting pipe 1 comprises a setting pipe 101, a valve body 102, and a spool rod 103; the valve body 102 is of an internal hollow structure, one end of the valve core rod 103 penetrates through the inside of the valve body 102, and the valve core rod 103 can move up and down in the valve body 102 relative to the valve body 102; the setting tube 101 is connected to the spool rod 103.
In this embodiment, the setting pipe 101 is connected with one end of the valve core rod 103 far away from the valve body 102, setting liquid is conveyed into the valve core rod 103 through the setting pipe 101, and then the setting liquid flows into the setting cavity 601 of the packer 6 through a pipeline, so that the setting process is completed, and the ground stress fracturing test can be carried out; after fracturing test, need carry out the deblocking to packer 6, at this moment, utilize the rig to carry and control setting pipe 101 to drive case pole 103 and transfer the removal in valve body 102, when case pole 103 transfers to the assigned position, case pole 103 can communicate with well 7 and atmosphere, discharge the water in the case pole 103, after the sluicing is accomplished, packer 6 is in the deblocking state promptly, portable deblocking ware continues to carry out fracturing test or carries out the introduction through the rig to setting pipe 101 this moment to next test section, and then drive case pole 103, valve body 102 and packer 6 shift up out well 7 in well 7.
Wherein, optionally, sit and seal pipe 101 and be the rigidity pipe, the rig of being convenient for transfers and carries, reduces the operation degree of difficulty, can also avoid sitting and seal pipe 101 and sit and seal and drive case pole 103 and valve body 102 and lift or transfer the in-process in well 7 inner wall and bump, damage the structure.
Optionally, the setting pipe 101 and the valve core rod 103 are fixedly connected or detachably connected, and the setting pipe 101 and the valve core rod 103 can move synchronously, so that the drilling machine can drive the setting pipe 101 and the valve core rod 103 to lift or lower synchronously.
In an embodiment of the present application, as shown in fig. 2 to 4, the valve body 102 is preferably provided with a drainage opening 1021, and the drainage opening 1021 is communicated with the hoistway 7.
In this embodiment, accomplish the setting and carry out the fracturing test, when need carry out the deblocking after accomplishing the fracturing test, valve core pole 103 moves down to the bottom of valve body 102 in valve body 102, this moment, water in the valve core pole 103 can directly discharge to well 7 in through outlet 1021, and then accomplish the operation of sluicing deblocking, and outlet 1021 is for only having the sluicing function, no water inlet function, under the effect of water pressure difference, only experiment water flow direction well 7, inside the unable backward flow valve body 102 that advances of mud in the well 7, can effectively avoid mud and the sewage pollution setting pipe 101 way in the well 7.
Wherein, optionally, outlet 1021 department is provided with one-way outlet valve for outlet 1021 has one-way sluicing function, can effectively restrict the backward flow of mud in the well 7 and seal the pipe 101 way to the seat in, pollutes and damages this high pressure water route controlling means and packer 6.
Wherein, optionally, the one-way drain valve is a one-way drain valve commonly found in the prior art, as will be well understood by those skilled in the art.
Optionally, other components capable of achieving the same function may be used instead of the one-way drain valve described in this embodiment, such as a backflow preventer, but of course, not limited thereto, as an alternative of this application.
In one embodiment of the present application, preferably, as shown in fig. 2 to 5, a water outlet 1031 is provided on a portion of the valve core rod 103 located inside the valve body 102; the interior of the setting pipe 101 can be sequentially communicated with the water outlet 1031 and the drain port 1021, and is used for causing water in the setting pipe 101 to flow into the hoistway 7.
In the embodiment, during setting, part of the valve core rod 103 inside the valve body 102 is positioned at the upper part of the valve body 102 through the lifting of the setting pipe 101, and at the moment, the water outlet 1031 of the valve core rod 103 is far away from the water drain port 1021 and is communicated with the setting cavity 601 of the packer 6, so that the setting liquid introduced through the setting pipe 101 and the valve core rod 103 can flow into the setting cavity 601 of the packer 6;
when the draining and unsealing process is carried out, part of the valve core rod 103 positioned in the valve body 102 is placed to the bottom of the valve body 102 through the setting pipe 101, at the moment, the water outlet 1031 is close to the draining port 1021 and is communicated with the draining port 1021, so that water in the setting pipe 101 is discharged to the hoistway 7 through the water outlet 1031 and the draining port 1021 in sequence, the draining and unsealing operation can be completed, and an additional draining device is not needed.
Optionally, the number of the water outlets 1031 of the valve core rod 103 is multiple, and the multiple water outlets 1031 are uniformly arranged in the circumferential direction of the valve core rod 103 at intervals; in the setting process, a plurality of water outlets 1031 are communicated with the setting chamber 601 at the same time, so that the flow rate and the inflow speed of the setting liquid flowing into the setting chamber 601 can be improved, and the working efficiency is improved. In the deblocking process, a plurality of water outlets 1031 are communicated with the water draining port 1021, so that the water draining flow and the water draining speed are obviously improved, the deblocking process is accelerated, and the working efficiency is improved.
In one embodiment of the present application, preferably, as shown in fig. 5, the rigid setting pipe 1 further includes a high pressure water passage 3, and the high pressure water passage 3 is disposed inside the valve body 102 and can communicate with the water outlet 1031 of the valve core rod 103.
In this embodiment, one end of the high pressure water channel 3 is communicated with the setting chamber 601 of the packer 6, and the opposite end of the high pressure water channel 3 is communicated with the water outlet 1031 of the valve core rod 103, so that in the setting process, the setting fluid in the setting pipe 101 flows into the setting chamber 601 of the packer 6 through the high pressure water channel 3, the high pressure water channel 3 has strong pressure bearing capability, and the setting fluid with certain pressure is prevented from directly acting on the valve body 102.
In one embodiment of the present application, preferably, as shown in fig. 2 and 5, one end of the fracturing line 2 extending into the well 7 is provided with a high-pressure joint 202, and the fracturing line 2 and a fracturing cavity 602 formed between the packer 6 and the well wall are connected through the high-pressure joint 202.
In this embodiment, high-pressure water flows through the fracturing line 2, and when the fracturing line 2 supplies high-pressure water to the fracturing chamber 602 formed between the packer 6 and the well wall, the high-pressure joint 202 provided at the connection position of the fracturing line 2 and the packer 6 can withstand a larger pressure than a normal line joint.
In one embodiment of the present application, as shown in fig. 4, the inner wall of the valve body 102 is preferably provided with a groove, and a sealing ring 4 is disposed in the groove, and the sealing ring 4 is used for preventing water in the well 7 from entering the high-pressure water passage 3.
In this embodiment, when the setting pipe 101 drives the valve core rod 103 to be lowered to the bottom of the valve body 102, a gap can appear between the valve core rod 103 and the valve body 102, at this moment, water in the well 7 is likely to enter the valve body 102 from the gap, the water in the well 7 enters the valve body 102 and flows downwards along the valve body 102 and the valve core rod 103, at this moment, the valve core rod 103 is tightly attached to a plurality of sealing rings 4, the sealing is performed between the valve core rod 103 and the valve body 102, the water in the well 7 is prevented from further flowing into the valve body 102, and the water in the well 7 is prevented from flowing into the setting cavity 601 of the high-pressure water channel 3 and the packer 6 through the water outlet 1031.
Optionally, the number of the grooves and the number of the sealing rings 4 are multiple, and the sealing rings 4 correspond to the grooves one to one.
In one embodiment of the present application, preferably, as shown in fig. 2, 3 and 5, the high pressure waterway control device further includes a connection pipe 5, and the high pressure waterway 3 is connected to the setting chamber 601 of the packer 6 through the connection pipe 5.
In this embodiment, the connection pipe 5 is a high-pressure rubber pipe commonly used in the prior art, and has a characteristic of being able to bear a larger pressure compared to a common pipeline, which can be fully understood by those skilled in the art and will not be described herein again.
In one embodiment of the present application, the setting pipe 101 is preferably a drill pipe, as shown in fig. 2, a rigid pipe, although not limited thereto.
In this embodiment, the setting pipe 101 is a common drill rod in the prior art, can bear huge pressure, pressure difference, distortion and vibration, has stronger rigidity and hardness, can ensure the normal operation of setting and unsealing, is also convenient for drive valve core rod 103 and valve body 102 and carry and draw and transfer, and drill rod long service life, can use repeatedly, reduce cost.
The embodiment of the application also provides a hydrofracturing ground stress measuring system, which comprises the high-pressure water path control device in any one of the embodiments, so that the system has all the beneficial technical effects of the high-pressure water path control device, and the details are not repeated herein.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (7)
1. A high pressure water line control apparatus, comprising: a plurality of sections of high-pressure rubber pipes and a rigid setting pipeline;
any two adjacent sections of the high-pressure rubber pipes are connected through a sealing joint to form a fracturing pipeline;
the fracturing pipeline is used for conveying fracturing fluid into a fracturing cavity formed between the packer and the well wall;
the rigid setting pipeline is used for conveying setting liquid to a setting cavity of the packer;
the rigid setting pipeline comprises a setting pipe, a valve body and a valve core rod;
the valve body is of an internal hollow structure, one end of the valve core rod penetrates through the inside of the valve body, and the valve core rod can move up and down in the valve body relative to the valve body; the setting pipe is connected with the valve core rod;
the valve body is provided with a water outlet which is communicated with the shaft;
the valve core rod is provided with a water outlet communicated with the setting pipe; the interior of the setting pipe can be communicated with the water outlet and the water outlet in sequence, and is used for enabling water in the setting pipe to flow into the well.
2. The high pressure water line control device of claim 1, wherein the rigid setting line further comprises a high pressure water passage disposed inside the valve body and capable of communicating with the water outlet of the valve core rod.
3. The high pressure water line control device of claim 1, wherein one end of the fracturing line extending into the well is provided with a high pressure joint, and the fracturing line is connected with the fracturing cavity through the high pressure joint.
4. The high pressure water circuit control device according to claim 2, wherein the inner wall of the valve body is provided with a groove, a sealing ring is arranged in the groove, and the sealing ring is used for preventing water in the well from entering the high pressure water channel.
5. The high pressure water circuit control device of claim 2, further comprising a connecting pipe through which the high pressure water channel is connected with the setting chamber of the packer.
6. A high pressure water circuit control device as claimed in claim 1, wherein the setting pipe is a drill pipe.
7. A hydrofracturing ground stress measurement system comprising a high pressure water circuit control apparatus as claimed in any one of claims 1 to 6.
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| CN201910291544.0A CN109915099B (en) | 2019-04-11 | 2019-04-11 | High-pressure water path control device and hydrofracturing ground stress measurement system |
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| CN201910291544.0A CN109915099B (en) | 2019-04-11 | 2019-04-11 | High-pressure water path control device and hydrofracturing ground stress measurement system |
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| CN111042786A (en) * | 2019-11-19 | 2020-04-21 | 北京同力地质科技有限公司 | Hydraulic fracturing measuring device suitable for three-dimensional measuring device |
| CN112814638A (en) * | 2021-01-26 | 2021-05-18 | 中国地震局第一监测中心 | Ground stress measuring downhole device and hydraulic fracturing ground stress measuring system |
| CN116146141B (en) * | 2022-12-30 | 2024-07-23 | 中铁第一勘察设计院集团有限公司 | Packer for ground stress test and ground stress test system |
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| CN105317394A (en) * | 2014-06-26 | 2016-02-10 | 天津市正瀚石油设备制造有限公司 | High-temperature-resistant and high-pressure-bearing packer special for oil drilling |
| CN107366510A (en) * | 2016-05-11 | 2017-11-21 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device and actuating oil-pumping unit with pressure, the workover treatment technology of oil pipe |
| CN106907146B (en) * | 2017-04-19 | 2023-04-07 | 中国电建集团中南勘测设计研究院有限公司 | Control valve and hydrofracturing geodesic stress test device |
| CN109469479B (en) * | 2018-11-30 | 2023-07-14 | 天地科技股份有限公司 | Hydraulic fracturing ground stress measurement system and method |
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