CN209764391U - Simulation test system for downhole tool - Google Patents
Simulation test system for downhole tool Download PDFInfo
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- CN209764391U CN209764391U CN201920354397.2U CN201920354397U CN209764391U CN 209764391 U CN209764391 U CN 209764391U CN 201920354397 U CN201920354397 U CN 201920354397U CN 209764391 U CN209764391 U CN 209764391U
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- 238000012360 testing method Methods 0.000 title claims abstract description 108
- 238000004088 simulation Methods 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a simulation test system for instrument in pit belongs to oil gas field development technical field. The simulation test system comprises: the test device comprises a test shaft, a pressure sensor and a controller, wherein one end of the test shaft is provided with an oil pipe and a sleeve sleeved outside the oil pipe, and the other end of the test shaft is sealed; a temperature control system and a pressure control system connected with the test wellbore; a force loading system connected to the tubing; and a measurement and control system. The simulation test system simulates the conditions of underground working conditions (including temperature, pressure, load and the like) by arranging a test shaft, a temperature control system, a pressure control system and a force loading system, and tests the underground tool under the conditions. The temperature in the test shaft simulated by the test system can reach 200 ℃, the pressure can reach more than 140MPa, the test requirements of downhole tools can be met, and the test system can be further effectively used for subsequent detection and evaluation work of downhole tools such as a splitter, a bridge plug, a sliding sleeve, a restrictor and the like.
Description
Technical Field
the utility model relates to an oil gas field development technical field, in particular to a simulation test system for instrument in pit.
background
the development process of oil and gas fields is often accompanied with the research and development and application of downhole tools, the new materials and the newly designed downhole tools need to be subjected to indoor intermediate evaluation tests before actual application to test the working performance (including temperature resistance, pressure resistance, sealing performance, tensile pressure and the like) of the downhole tools under various conditions, and the working performance is optimized and improved according to test results, so that various performance indexes of products finally reach design requirements.
in the prior art, the downhole tool subjected to the indoor intermediate evaluation test is directly applied to actual production, which has many problems. Taking the Changning-Wignen shale gas demonstration area as an example, the number of underground tools such as a composite bridge plug, a large-drift-diameter bridge plug and a soluble bridge plug which are put in is more than thousands of every year, and in the field construction process of a part of bridge plugs, the problems of upward movement of the bridge plugs, early setting in midway, unsuccessful release, unsmooth flowback and the like exist, so that the normal fracturing construction operation on the field is seriously influenced.
designers find that with the increase of the vertical depth of a shale gas well, in actual production, the service temperature required by various bridge plugs is increased to 150 ℃, the opening pressure value of a sleeve starting sliding sleeve is higher than 120MPa, and an indoor middle evaluation test device cannot meet the test conditions, so that the underground tool subjected to the indoor middle evaluation test cannot be effectively used for the detection and evaluation work of underground tools such as a packer, the bridge plug, the sliding sleeve and a restrictor, and the normal fracturing construction operation on site is influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a simulation test system for downhole tool can be used for detection and evaluation work of downhole tool such as decollator, bridging plug, sliding sleeve, flow controller effectively. The technical scheme is as follows:
Specifically, the method comprises the following technical scheme:
A simulation test system for a downhole tool is provided, the simulation test system comprising:
The test device comprises a test shaft, a pressure sensor and a controller, wherein one end of the test shaft is provided with an oil pipe and a sleeve sleeved outside the oil pipe, and the other end of the test shaft is sealed;
a temperature control system connected to the test wellbore for controlling the temperature inside the test wellbore;
A pressure control system in communication with the test wellbore for controlling pressure inside the test wellbore;
A force loading system connected to the tubing for controlling movement of the tubing within the casing;
And the measurement and control system is respectively connected with the temperature control system, the pressure control system and the force loading system.
in one possible design, the test wellbore includes a barrel, an upper plug, and a lower plug;
the upper plug body is arranged at the first end of the cylinder body, and the oil pipe is arranged at the first end through the upper plug body;
the lower plug body is disposed on the second end of the barrel, and the second end is sealed by the lower plug body.
in one possible design, the test wellbore further comprises an anti-rotation ring;
the anti-rotation ring is arranged between the inner wall of the barrel and the upper plug body, and the sleeve is arranged on the first end through the anti-rotation ring.
In one possible design, the upper plug body is provided with a liquid inlet through hole with a switch valve;
The oil pipe is connected to the lower end of the upper plug body, and the oil pipe is communicated with the liquid inlet through hole.
In one possible design, the lower plug body is provided with a sewage discharge through hole;
And a dirt removing plug is arranged at the bottom of the dirt discharging through hole.
In one possible design, a pressurizing opening is formed in the side wall of the cylinder body;
The pressure control system controls the pressure inside the cylinder through the pressurization port.
in one possible design, the pressure control system includes a high pressure booster pump and a low pressure booster pump;
The high-pressure booster pump and the low-pressure booster pump are respectively connected with the pressurizing port.
In one possible design, the pressure control system further comprises a gas supply;
the gas supply device is respectively connected with the high-pressure booster pump and the low-pressure booster pump and is used for providing power sources for the high-pressure booster pump and the low-pressure booster pump.
In one possible design, the gas supply device comprises a screw compressor, a gas storage tank, a freeze dryer and a tertiary filter which are connected in sequence.
in one possible design, the exterior of the cylinder is provided with a heating jacket;
the temperature control system controls the temperature inside the cylinder through the heating sleeve.
The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:
The embodiment of the utility model provides a simulation test system through setting up experimental pit shaft and temperature control system, pressure control system and power loading system, simulates operating mode (including temperature, pressure and load etc.) in the pit to examine the instrument in the pit under this operating mode. The temperature in the test shaft simulated by the test system can reach 200 ℃, the pressure can reach more than 140MPa, the test requirements of downhole tools can be met, and the test system can be further effectively used for subsequent detection and evaluation work of downhole tools such as a splitter, a bridge plug, a sliding sleeve, a restrictor and the like.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
fig. 1 is a schematic structural diagram of a simulation testing system for a downhole tool according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the configuration of one of the test wellbores of FIG. 1;
Fig. 3 is a schematic structural view of an air supply device in fig. 1.
The reference numerals in the drawings denote:
1-test wellbore;
101-a cylinder body; 102-an upper plug body; 103-a lower plug body; 104-anti-rotation ring; 105-liquid inlet through holes; 106-blowdown through holes; 107-cleaning plug; 108-a pressure port; 109-screwing a threaded sleeve; 110-a compression screw sleeve; 111-O-ring; 112-a plug flange; 113-lower thread insert; 114-a bottom compression ring;
2-a temperature control system;
3-a pressure control system; 301-high pressure booster pump; 302-low pressure booster pump;
303-gas supply means; 3031-screw compressor; 3032-gas holder; 3033-a freeze dryer; 3034-three-stage filter;
4-force loading system;
5-a measurement and control system.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings. Unless defined otherwise, all technical terms used in the embodiments of the present invention have the same meaning as commonly understood by one of ordinary skill in the art.
In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are usually placed in when they are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which they refer 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", etc. are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
An embodiment of the utility model provides a simulation test system for downhole tool, as shown in fig. 1, this simulation test system includes:
the device comprises a test shaft 1, wherein one end of the test shaft 1 is provided with an oil pipe and a sleeve pipe sleeved outside the oil pipe, and the other end of the test shaft 1 is sealed;
The temperature control system 2 is connected with the test shaft 1 and is used for controlling the temperature inside the test shaft 1;
the pressure control system 3 is communicated with the test shaft 1 and is used for controlling the pressure inside the test shaft 1;
The force loading system 4 is connected with the oil pipe and is used for controlling the movement of the oil pipe in the casing;
and the measurement and control system 5 is respectively connected with the temperature control system 2, the pressure control system 3 and the force loading system 4.
The embodiment of the utility model provides a simulation test system, through setting up experimental pit shaft 1 and temperature control system 2, pressure control system 3 and power loading system 4, come simulation operating mode (including temperature, pressure and load etc.) condition in the pit to examine the instrument in the pit under this condition. The temperature in the test shaft 1 simulated by the test system can reach 200 ℃, the pressure can reach more than 140MPa, the test requirements of downhole tools can be met, and the test system can be further effectively used for subsequent detection and evaluation work of downhole tools such as a divider, a bridge plug, a sliding sleeve, a restrictor and the like.
When the device is used, the test shaft 1 can be arranged in a foundation pit below the ground, one end of the seal faces the bottom of the foundation pit, then an oil pipe and a casing pipe are arranged at the other end of the test shaft 1, and a downhole tool to be tested is connected into the oil pipe and the casing pipe; the temperature control system 2 and the pressure control system 3 are connected with the test shaft 1, the force loading system 4 is connected with an oil pipe, the temperature control system 2 can heat up or cool down the test shaft 1 to simulate the temperature condition in the actual working condition, the pressure control system 3 can boost or reduce the pressure of the test shaft 1 to simulate the pressure condition in the actual working condition, and the force loading system 4 can control the load force of the oil pipe to simulate the load in the actual working condition. The performance of the downhole tool can thus be verified under similar operating conditions prior to construction.
It will be appreciated that movement of the tubing within the casing may include up, down and rotation of the tubing within the casing. The force loading system 4 may be located above the test wellbore 1 (outside the pit) and the application of load is carried out above the tubing. In addition, an escalator can be arranged below the foundation pit, so that equipment can be conveniently overhauled and maintained.
In the simulation test system, the test shaft 1 is used for simulating an actual oil well, and the test shaft 1 is filled with oil when the simulation test system is applied. The test wellbore 1 may include a barrel 101 for ease of use, and the placement of a 7 ", 5-1/2", 5 ", or 4-1/2" gauge casing within the barrel 101 may be selected based on the actual simulated well size.
Further, as shown in fig. 2, the test wellbore 1 may further include an upper plug 102 and a lower plug 103; the upper plug body 102 is arranged on the first end of the cylinder body 101, and the oil pipe is arranged on the first end through the upper plug body 102; the lower plug 103 is disposed on the second end of the barrel 101 and the second end is sealed by the lower plug 103.
the upper plug body 102 is arranged to facilitate installation of an oil pipe, and the lower plug body 103 is arranged to seal a second end of the oil pipe, so that the test wellbore 1 forms a relatively sealed environment. When in use, the force loading system 4 can control the up-running, down-running and rotating motions of the oil pipe by connecting the upper plug body 102.
In order to facilitate the setting of the casing, in the above-mentioned simulation test system, the test wellbore 1 may further include an anti-rotation ring 104; an anti-rotation ring 104 is provided between the inner wall of the cylinder 101 and the upper plug body 102, and a sleeve is provided on the first end through the anti-rotation ring 104.
When the device is applied, the sleeve is connected to the anti-rotation ring 104, the anti-rotation ring 104 can prevent the sleeve from rotating, and the sleeve is sleeved outside the oil pipe, so that the simulation of the actual well condition is realized.
in addition, it can be understood that, for the convenience of arranging the upper plug body 102 and the anti-rotation ring 104, as shown in fig. 2, the test wellbore 1 further includes an upper screw sleeve 109, a compression screw sleeve 110, an O-ring 111, and the like, wherein the upper screw sleeve 109 can be used for fixedly installing the compression screw sleeve 110, the compression screw sleeve 110 can be used for compressing the upper plug body 102, and the O-ring 111 can be used for sealing connection between the upper plug body 102 and the anti-rotation ring 104 and between the anti-rotation ring 104 and the barrel body 101.
In the above simulation test system, in order to facilitate the injection of the oil into the cylinder 101, the upper plug 102 may be provided with a liquid inlet through hole 105 having a switch valve; an oil pipe is connected to the lower end of the upper plug body 102, and the oil pipe communicates with the liquid inlet through hole 105.
When the device is applied, the switch valve can be opened, so that oil is injected into the oil pipe through the liquid inlet through hole 105 and then enters the oil sleeve annulus and the cylinder body 101 through the bottom of the oil pipe; when the pressure and temperature in the cylinder 101 are adjusted, the on-off valve is closed.
furthermore, a pollution discharge through hole 106 can be arranged on the lower plug body 103; the bottom of the drain through hole 106 is provided with a drain plug 107 for periodically cleaning the cylinder 101.
during normal test, the lower plug body 103 is plugged by the cleaning plug 107; when the test is finished and the cylinder 101 needs to be cleaned, the cylinder 101 is removed, and the cleaning plug 107 is removed to perform the cleaning operation.
It is to be understood that, for convenience of setting the lower plug 103, as shown in fig. 2, the test wellbore 1 may further include a lifting plug flange 112, a lower thread insert 113, a bottom pressing ring 114, and the like, where the lifting plug flange 112 and the lower thread insert 113 may be used to fixedly mount the lower plug 103, and the bottom pressing ring 114 may be used to seal the lower plug 103 and the barrel 101.
in the above-described simulation test system, the pressure control system 3 is used to control the pressure inside the cylinder 101, and the pressure control system 3 makes the pressure inside the cylinder 101 conform to the pressure condition in the simulated actual working condition by increasing or decreasing the pressure. Based on this, the side wall of the cylinder 101 is provided with a pressure port 108; the pressure control system 3 controls the pressure inside the cylinder 101 through the pressurizing port 108.
To more truly simulate pressure conditions within a well, the pressurization port 108 may be made to include multiple pressurization ports, taking into account pressure differences between different locations within the actual well.
for example, the number of the pressure ports 108 may be three, the three pressure ports respectively correspond to an upper cavity and a lower cavity of the divided oil jacket annulus and a central cavity (not shown in the figure) formed inside the oil pipe, and the three pressure ports are respectively communicated with the pressure control system 3, and each cavity can be independently pressurized by the pressure control system 3 to meet the pressure requirements of different cavities. In addition, the pressurizing openings of the upper cavity, the lower cavity and the central cavity can be all located above the cylinder body 101, so that the pressurizing openings are prevented from being blocked by impurities during pressure relief.
The pressure control system 3 may be an oil pressure pressurization system, and the pressure control system 3 controls the pressure inside the cylinder 101 by supplying high pressure oil to the inside of the cylinder 101. Meanwhile, in order to meet the test requirements of different pressure levels, the pressure control system 3 can comprise a high-pressure booster pump 301 and a low-pressure booster pump 302; and the high-pressure booster pump 301 and the low-pressure booster pump 302 are connected to the pressurizing port 108, respectively. The high-pressure booster pump 301 and the low-pressure booster pump 302 have output capacities of different pressures and flow rates, and can perform pressurization of an upper chamber, a lower chamber and a central chamber, and pressurization of each path can be independently controlled. In addition, the central tube, the upper pressure cavity and the lower pressure cavity are respectively controlled by independent pneumatic control valves, each path is provided with a pressure gauge and a pressure sensor and is respectively provided with a manual pressure relief loop and an automatic pressure relief loop, and the pneumatic control valves are all inlet heavy-load type pneumatic control valves with stable performance due to the fact that the system needs to operate for a long time.
the oil pressure boosting system may use compressed air as a power source. In the above-described simulation test system, the pressure control system 3 may further include a gas supply device 303; the gas supply device 303 is connected to the high-pressure booster pump 301 and the low-pressure booster pump 302, respectively, and supplies power to the high-pressure booster pump 301 and the low-pressure booster pump 302, and controls the pressure and flow rate thereof.
3illustratively, as shown in fig. 3, the gas supply device 303 may include a screw compressor 3031, a gas storage tank 3032, a freeze dryer 3033 and a three-stage filter 3034 which are connected in sequence, the freeze dryer 3033 may be arranged to ensure the drying of the gas source, and the three-stage filter 3034 may be arranged to enable the gas purification level to reach the four-stage standard.
in the above simulation test system, the temperature control system 2 is used to control the temperature inside the cylinder 101, and the temperature control system 2 makes the temperature inside the cylinder 101 conform to the pressure condition in the simulated actual working condition by raising or lowering the temperature. Based on this, the heating jacket can be arranged outside the cylinder 101; the temperature control system 2 regulates the temperature inside the barrel 101 through a heating jacket.
In use, the temperature control system 2 heats the cylinder 101 by circulating a high temperature liquid (e.g., high temperature oil) in the heating jacket, and also cools the cylinder 101 by circulating a low temperature liquid (e.g., cooling water) in the heating jacket.
In addition, temperature sensors may be placed at the upper and lower portions of the drum 101 to monitor the temperature inside the drum 101 at any time.
The measurement and control system 5 is connected with the temperature control system 2, the pressure control system 3 and the force loading system 4 and is used for realizing automatic control of the whole simulation test system.
The embodiment of the utility model provides a simulation test system can carry out effectual detection and evaluation work to downhole tools such as packer, bridging plug, sliding sleeve, flow controller. A high-temperature and high-pressure downhole tool test evaluation system is built, a downhole tool evaluation method and standard are perfected on the basis, a downhole tool quality detection evaluation technology is formed, a third-party downhole tool quality control gateway can be moved forward, the field application risk is reduced, a pilot test means can be provided for the autonomous research and development of downhole tools, and the tool research and development cost and the field application risk are reduced. The embodiment of the utility model provides a simulation test system can use in the increase production transformation, drainage gas production, the three field of well workover, the instrument series of using mainly can include the bridging plug (compound bridging plug that bores soon, big latus rectum bridging plug, soluble bridging plug), packer (well completion packer, bore hole packer, stride the separated packer), injection tool (hydraulic jet ware, supporting ball-shooting sliding sleeve), sliding sleeve (sleeve pipe start-up sliding sleeve, can get formula switch sliding sleeve), flow controller (fixed downhole flow controller, movable downhole flow controller), gas lift valve (gas lift valve, gas lift valve working barrel), burnisher (downhole sampler, venturi basket) etc..
the above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A simulation testing system for a downhole tool, the simulation testing system comprising:
The device comprises a test shaft (1), wherein one end of the test shaft (1) is provided with an oil pipe and a sleeve pipe sleeved outside the oil pipe, and the other end of the test shaft is sealed;
A temperature control system (2) connected to the test wellbore (1) for controlling the temperature inside the test wellbore (1);
A pressure control system (3) in communication with the test wellbore (1) for controlling the pressure inside the test wellbore (1);
A force loading system (4) connected to the tubing for controlling movement of the tubing within the casing;
And the measurement and control system (5) is respectively connected with the temperature control system (2), the pressure control system (3) and the force loading system (4).
2. The simulation test system according to claim 1, characterized in that the test wellbore (1) comprises a cylinder (101), an upper plug body (102) and a lower plug body (103);
the upper plug body (102) is arranged on a first end of the cylinder body (101), and the oil pipe is arranged on the first end through the upper plug body (102);
The lower plug body (103) is arranged on a second end of the cylinder (101), and the second end is sealed by the lower plug body (103).
3. The simulation test system according to claim 2, wherein the test wellbore (1) further comprises an anti-rotation ring (104);
the anti-rotation ring (104) is arranged between the inner wall of the barrel body (101) and the upper plug body (102), and the sleeve is arranged on the first end through the anti-rotation ring (104).
4. the simulation test system according to claim 2, wherein the upper plug body (102) is provided with a liquid inlet through hole (105) with a switch valve;
the oil pipe is connected to the lower end of the upper plug body (102), and the oil pipe is communicated with the liquid inlet through hole (105).
5. the simulation test system according to claim 2, wherein the lower plug body (103) is provided with a blow-off through hole (106);
The bottom of the sewage discharge through hole (106) is provided with a sewage discharge plug (107).
6. The simulation test system according to claim 2, wherein a pressurizing port (108) is formed on the side wall of the cylinder (101);
The pressure control system (3) controls the pressure inside the cylinder (101) through the pressurization port (108).
7. the simulation test system according to claim 6, wherein the pressure control system (3) comprises a high pressure booster pump (301) and a low pressure booster pump (302);
The high-pressure booster pump (301) and the low-pressure booster pump (302) are respectively connected with the pressurizing port (108).
8. the simulation test system according to claim 7, wherein the pressure control system (3) further comprises a gas supply device (303);
the gas supply device (303) is respectively connected with the high-pressure booster pump (301) and the low-pressure booster pump (302) and is used for providing a power source for the high-pressure booster pump (301) and the low-pressure booster pump (302).
9. the simulation test system according to claim 8, wherein the gas supply device (303) comprises a screw compressor (3031), a gas storage tank (3032), a freeze dryer (3033) and a three-stage filter (3034) which are connected in sequence.
10. The simulation test system according to claim 2, wherein the exterior of the cylinder (101) is provided with a heating jacket;
The temperature control system (2) controls the temperature inside the cylinder (101) through the heating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354397.2U CN209764391U (en) | 2019-03-19 | 2019-03-19 | Simulation test system for downhole tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920354397.2U CN209764391U (en) | 2019-03-19 | 2019-03-19 | Simulation test system for downhole tool |
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| CN209764391U true CN209764391U (en) | 2019-12-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257138A (en) * | 2020-04-17 | 2020-06-09 | 西南石油大学 | Experimental device and method for simulating underground rock burst process |
| CN111487276A (en) * | 2020-04-24 | 2020-08-04 | 中国石油天然气集团有限公司 | Casing cooling test device and test method in ultra-high temperature environment |
| CN113027395A (en) * | 2021-03-25 | 2021-06-25 | 伍政 | Intelligent control method and system for golf type gas lift ball gas lift oil production |
| CN114486550A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Free bulging test method and system for downhole variable-temperature patching pipe |
-
2019
- 2019-03-19 CN CN201920354397.2U patent/CN209764391U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257138A (en) * | 2020-04-17 | 2020-06-09 | 西南石油大学 | Experimental device and method for simulating underground rock burst process |
| CN111487276A (en) * | 2020-04-24 | 2020-08-04 | 中国石油天然气集团有限公司 | Casing cooling test device and test method in ultra-high temperature environment |
| CN114486550A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Free bulging test method and system for downhole variable-temperature patching pipe |
| CN113027395A (en) * | 2021-03-25 | 2021-06-25 | 伍政 | Intelligent control method and system for golf type gas lift ball gas lift oil production |
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