CN111577253B - Safe and environment-friendly unconventional gas well effusion testing device and method - Google Patents
Safe and environment-friendly unconventional gas well effusion testing device and method Download PDFInfo
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- CN111577253B CN111577253B CN202010446674.XA CN202010446674A CN111577253B CN 111577253 B CN111577253 B CN 111577253B CN 202010446674 A CN202010446674 A CN 202010446674A CN 111577253 B CN111577253 B CN 111577253B
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000035939 shock Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 206010030113 Oedema Diseases 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 241000521257 Hydrops Species 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 63
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a safe and environment-friendly unconventional gas well effusion testing device and method, wherein the device comprises a pipeline system, an explosion-proof machine case, a buffer tank, a switching valve, a sensing system and a control unit, wherein the buffer tank, the switching valve, the sensing system and the control unit are positioned in the explosion-proof machine case. Compared with the prior art, the invention can realize continuous monitoring of the accumulated liquid in the high-pressure gas well oil pipe and the sleeve well barrel at the same time, utilizes the self gas of the high-pressure gas well, generates pulse sound waves by controlling the pressure difference naturally formed in the oil pipe sleeve, realizes the measurement of the underground accumulated liquid by detecting the pulse reflection sound waves, and is safe and environment-friendly, and tail gas is not discharged in the test process.
Description
Technical Field
The invention relates to the technical field of unconventional oil gas resources such as compact sandstone gas, shale gas, natural gas hydrate and the like, in particular to a safe and environment-friendly unconventional gas well effusion testing device and method.
Background
Along with the increasing severe energy crisis and environmental pollution, the requirements of people on clean energy are urgent, and the requirements on the extraction of shale gas, sandstone gas, natural gas wells and other high-pressure gas wells are higher. However, with the development of high-pressure gas wells, when the gas well gas production is less than the critical fluid carrying flow rate of the well, the well forms a dropsy, which affects the production yield of the well.
For daily management of high pressure gas wells, timely testing of the condition of the accumulated liquid in the casing and the oil pipe is required. At present, technologies and equipment for continuously testing accumulated liquid in a sleeve or an oil pipe in the market are mostly realized through high-pressure gas in an external discharge well, the dense high-pressure gas generally contains corrosive gas components such as hydrogen sulfide, and the external discharge test mode is gradually forbidden to be used along with the increasing of environmental protection requirements.
At present, the technology which meets the environmental protection requirement and continuously monitors the accumulated liquid of the shaft in the oil pipe of the gas well belongs to the technical blank. The pressure profile test is carried out by adopting a pressure gauge which is put into an oil pipe at present, and whether the liquid is accumulated in a shaft is judged according to the change of the pressure gradient, and the defects of the method are mainly shown as follows: the testing cost is high, the frequent testing is required after the well condition changes, the workload is large, and the field requirement of unconventional oil and gas extraction cannot be met.
Disclosure of Invention
The invention aims to provide a safe and environment-friendly unconventional gas well effusion testing device and method, which are used for realizing automatic continuous monitoring of gas well shaft effusion, reducing testing cost and solving the problem of high-pressure gas well effusion testing.
In order to achieve the above object, the present invention provides the following solutions:
the invention discloses a safe and environment-friendly unconventional gas well accumulated liquid testing device which comprises a pipeline system, an explosion-proof machine case, a buffer tank, a switch valve, a sensing system and a control unit, wherein the buffer tank, the switch valve, the sensing system and the control unit are arranged in the explosion-proof machine case, the pipeline system comprises an oil pipe connecting pipe, a switch valve air inlet pipe, a sleeve communicating pipe which are arranged in the explosion-proof machine case, an oil pipe interface device, a high-pressure pipeline and a sleeve interface device which are arranged outside the explosion-proof machine case, the oil pipe interface device, the oil pipe connecting pipe, the switch valve air inlet pipe, the buffer tank, the sleeve connecting pipe, the high-pressure pipeline and the sleeve interface device are sequentially communicated, the oil pipe interface device is used for being communicated with an on-site high-pressure gas well oil pipe orifice, the sleeve interface device is used for being communicated with an on-site high-pressure gas well sleeve orifice, the sensing system comprises an oil pipe microphone arranged on the oil pipe connecting pipe, an oil pipe pressure sensor and a sleeve microphone arranged on the sleeve, all parts of the sensing system are electrically connected with an input end of the control unit through a control signal wire, and an output end of the switch valve through a control signal wire.
Preferably, the control unit comprises a battery power supply, a control circuit and a wireless communication module, wherein the control circuit is used for analyzing and calculating signals collected by the sensing system and controlling the opening and closing of the switch valve, and the wireless communication module is used for receiving an external test instruction.
Preferably, the flameproof case is made of stainless steel.
Preferably, the buffer tank has a volume of 300-400 ml.
Preferably, the installation position of the on-off valve air inlet pipe on the buffer tank is higher than the installation position of the sleeve connecting pipe.
The invention also discloses a safe and environment-friendly unconventional gas well effusion test method, which uses the safe and environment-friendly unconventional gas well effusion test device, and comprises the following steps:
s1, introducing gas in a sleeve into a buffer tank through a sleeve interface device, a high-pressure pipeline and a sleeve connecting pipe, buffering in the buffer tank, wherein the pressure in the buffer tank is equal to the pressure of the sleeve, connecting the oil pipe interface device with an oil pipe, measuring the pressure in the oil pipe through an oil pipe pressure sensor, and measuring the pressure in the sleeve through the sleeve pressure sensor;
s2, taking the pressure difference in the sleeve pipe higher than the pressure difference in the oil pipe as a sound wave air source for testing, after the testing device receives a testing command, controlling the pulsation opening time of the switching valve according to the difference between the oil pressure and the sleeve pressure, and rapidly closing the switching valve, wherein the air in the buffer tank at the rear end of the switching valve rapidly enters the oil pipe through the switching valve, and the air in the annular space at the wellhead of the oil pipe is instantaneously compressed to generate compression shock waves; the acoustic pulse propagates down the well along the annular space of the oil pipe, the reflected acoustic pulse is generated when the acoustic pulse meets the oil pipe coupling and the gas-liquid interface, the acoustic pulse is received by the oil pipe microphone and converted into an electric signal, the electric signal is digitally processed by the control unit, the depth of the liquid level of the oil pipe is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit, so that the test of the liquid level of the oil pipe is realized;
at the same moment, at the other end of the switch valve, because the gas in the buffer tank enters the oil pipe, the volume of the gas in the buffer tank is reduced, the pressure is reduced, the gas consumption is quickly supplemented through a high-pressure pipeline, the gas in the annular space at the well mouth of the sleeve is instantaneously expanded to generate expansion shock waves, the expansion shock waves are reflected at the well mouth of the sleeve and then downwards spread along the annular space of the sleeve, the expansion shock waves encounter the coupling of the oil pipe and the gas-liquid interface to generate reflected sound wave pulses, the sound pulses are received by the microphone of the sleeve and converted into electric signals, the electric signals are digitally processed through the control unit, the depth of the liquid level of the sleeve is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit, so that the test of the liquid level of the sleeve is realized.
Compared with the prior art, the invention has the following technical effects:
1. according to the testing device, the sleeve gas of the high-pressure gas well is used as a percussion gas source, and the tail gas is tested and discharged into the oil pipe of the well, so that the sleeve liquid level of the gas well, the liquid level of the oil pipe and the pipe column structure can be tested at the same time, and one-click two-test is realized;
2. the tail gas of the testing device is not discharged, so that gas for testing circulates in the well, and the gas source is inexhaustible, thereby saving testing cost, and being safe and environment-friendly;
3. the two ends of the testing device are respectively connected with the oil pipe and the sleeve pipe of the high-pressure gas well, the one-to-two type gas well is simple in structure and convenient to operate, long-term continuous monitoring can be realized, and the significance of analyzing and grasping the hydrops change rule of the gas well is great;
4. the testing device has two functions of measuring pressure and effusion, simultaneously monitors the oil pipe and the sleeve pipe, can provide four parameters, and is suitable for various well conditions such as tight and ultra-tight sandstone oil gas, shale oil gas, coal bed gas, water-soluble gas, natural gas and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a safety and environmental protection unconventional gas well effusion testing device;
reference numerals illustrate: 1. an oil pipe interface device; 2. an oil pipe connecting pipe; 3. a tubing microphone; 4. an oil line pressure sensor; 5. a switch valve; 6. an air inlet pipe of a switch valve; 7. a buffer tank; 8. a sleeve pressure sensor; 9. a sleeve microphone; 10. a sleeve connecting pipe; 11. a control unit; 12. a control signal line; 13. a high pressure line; 14. a cannula interface device; 15. and an explosion-proof case.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a safe and environment-friendly unconventional gas well effusion testing device and method, which are used for realizing automatic continuous monitoring of gas well shaft effusion, reducing testing cost and solving the problem of high-pressure gas well effusion testing.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the embodiment provides a safe and environment-friendly unconventional gas well effusion testing device, which comprises a pipeline system, an explosion-proof machine case 15, a buffer tank 7 positioned in the explosion-proof machine case 15, a switching valve 5, a sensing system and a control unit 11. The flameproof housing 15 is preferably made of stainless steel for protecting the devices loaded therein.
The pipeline system comprises an oil pipe connecting pipe 2, a switching valve air inlet pipe 6 and a sleeve connecting pipe which are positioned in the flameproof machine case 15, and an oil pipe interface device 1, a high-pressure pipeline 13 and a sleeve interface device 14 which are positioned outside the flameproof machine case 15. One end of the oil pipe connecting pipe 2 extends out of the explosion-proof case 15 and is communicated with the oil pipe interface device 1, the other end of the oil pipe connecting pipe 2 is communicated with one port of the switch valve 5, the other port of the switch valve 5 is communicated with one end of the switch valve air inlet pipe 6, the other end of the switch valve air inlet pipe 6 is communicated with one opening of the buffer tank 7, the other opening of the buffer tank 7 is communicated with one end of the sleeve connecting pipe 10, the other end of the sleeve connecting pipe 10 extends out of the explosion-proof case 15 and is communicated with one end of the high-pressure pipeline 13, and the other end of the high-pressure pipeline 13 is communicated with the sleeve interface device 14. The high pressure pipeline 13 is preferably a high pressure resistant stainless steel pipe, and the specific length and shape of the high pressure pipeline are different according to the on-site well condition of the high pressure gas well. The oil pipe interface device 1 is used for communicating with an oil pipe orifice of a high-pressure gas well on site, and the sleeve interface device 14 is used for communicating with a sleeve orifice of the high-pressure gas well on site.
Specifically, the buffer tank 7 is used for storing a certain amount of casing gas of the high-pressure gas well, and can instantaneously provide a sufficient amount of casing gas when the switch valve 5 is opened, so as to form pulse impact sound waves. The volume of the buffer vessel 7 is preferably 300-400 ml, and the volume of the buffer vessel 7 in this embodiment is 350 ml. In order to prevent gas condensate in the surge tank 7 from entering the on-off valve 5 when the temperature is low, in the present embodiment, the installation position of the on-off valve intake pipe 6 connected to the surge tank 7 is higher than the installation position of the sleeve connection pipe 10 connected to the surge tank 7.
The sensing system comprises an oil pipe microphone 3 and an oil pipe pressure sensor 4 which are arranged on an oil pipe connecting pipe 22, and a sleeve pressure sensor 8 and a sleeve microphone 9 which are arranged on a sleeve connecting pipe 10, wherein all components of the sensing system are electrically connected with the input end of a control unit 11 through a control signal wire 12, and a switch valve 5 is electrically connected with the output end of the control unit 11 through the control signal wire 12.
Specifically, the tubing microphone 3 and the casing microphone 9 are respectively used for converting received in-tubing pulse waves and in-casing pulse waves into electric signals, and the tubing pressure sensor 4 and the casing pressure sensor 8 are respectively used for acquiring and measuring the pressure in the tubing and the pressure in the casing.
The control unit 11 comprises a battery power supply, a control circuit and a wireless communication module, and the control unit 11 is provided with embedded software. The control circuit is used for collecting the reflected sound wave electric signals generated by the oil pipe microphone 3 and the casing microphone 9, analyzing and calculating the electric signals, and completing the functions of storing, analyzing, automatically calculating depth and the like; on the other hand, for controlling the opening and closing of the on-off valve 5; the wireless communication module is used for receiving external test instructions and completing various field works. The wireless communication module has various types, such as GPRS, zigbee, wiFi, bluetooth and 485 field communication buses, and the person skilled in the art can flexibly select according to actual needs.
The embodiment also provides a safe and environment-friendly unconventional gas well effusion test method, which uses the safe and environment-friendly unconventional gas well effusion test device and comprises the following steps:
s1, introducing gas in the sleeve into the buffer tank 7 through the sleeve interface device 14, the high-pressure pipeline 13 and the sleeve connecting pipe 10, buffering the gas in the buffer tank 7, wherein the pressure in the buffer tank 7 is equal to the sleeve pressure, connecting the oil pipe interface device 1 with an oil pipe, measuring the pressure in the oil pipe through the oil pipe pressure sensor 4, and measuring the pressure in the sleeve through the sleeve pressure sensor 8.
S2, taking the pressure difference in the sleeve pipe higher than the pressure difference in the oil pipe as a sound wave air source for testing, after the testing device receives a testing command, controlling the pulsation opening time of the switch valve 5 according to the difference between the oil pressure and the sleeve pressure, and rapidly closing the switch valve, wherein the air in the buffer tank 7 at the rear end of the switch valve 5 rapidly enters the oil pipe through the switch valve 5, and the air in the annular space at the wellhead of the oil pipe is instantaneously compressed to generate compression shock waves. The sound wave pulse propagates downwards along the annular space of the oil pipe, the reflected sound wave pulse is generated when the sound wave pulse meets the oil pipe coupling and the gas-liquid interface, the sound pulse is received by the oil pipe microphone 3 and converted into an electric signal, the electric signal is digitally processed by the control unit 11, the liquid level depth of the oil pipe is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit 11 so as to realize the test of the liquid level of the oil pipe;
at the same time, at the other end of the switch valve 5, because the gas in the buffer tank 7 enters the oil pipe, the gas pressure in the buffer tank 7 is reduced at the moment, the high-pressure gas in the sleeve rapidly supplements the consumption of the gas through the high-pressure pipeline 13, and the gas in the annular space at the wellhead of the sleeve instantaneously expands to generate expansion shock waves. The expansion sound wave is reflected at the casing mouth and then propagates downwards along the casing annulus, reflected sound wave pulse is generated when the expansion sound wave encounters a tubing coupling and a gas-liquid interface, the sound pulse is received by the casing microphone 9 and converted into an electric signal, the electric signal is digitally processed by the control unit 11, the casing liquid level depth is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit 11, so that the casing liquid level is tested.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a safe and environment-friendly unconventional gas well hydrops testing arrangement, its characterized in that includes pipe system, flame proof machine case and is located buffer tank, ooff valve, sensing system, the control unit in the flame proof machine incasement, pipe system includes be located oil pipe connecting pipe, ooff valve intake pipe, sleeve pipe communicating pipe in the flame proof machine incasement and be located oil pipe interface device, high-pressure line, sleeve pipe interface device outside the flame proof machine case, oil pipe interface device oil pipe connecting pipe the ooff valve intake pipe the buffer tank the sleeve pipe connecting pipe the high-pressure line the sleeve pipe interface device communicates in proper order, oil pipe interface device is used for with scene high-pressure gas well oil mouth of pipe intercommunication, sleeve pipe interface device is used for with scene high-pressure gas well mouth of pipe intercommunication, sensing system includes oil pipe microphone, oil pipe pressure sensor and the sleeve pipe pressure sensor who installs on the sleeve pipe, sleeve pipe microphone, each part of sensing system all passes through control signal line with the input of control unit with the input terminal through control unit electrical connection through the switch valve and the output unit.
2. The safety and environment-friendly unconventional gas well effusion testing device according to claim 1, wherein the control unit comprises a battery power supply, a control circuit and a wireless communication module, wherein the control circuit is used for analyzing and calculating signals collected by the sensing system and controlling the opening and closing of a switch valve, and the wireless communication module is used for receiving external testing instructions.
3. The safety and environmental protection unconventional gas well effusion testing device according to claim 1, characterized in that the flameproof machine case is made of stainless steel.
4. The safety environmental protection unconventional gas well effusion testing device according to claim 1, characterized in that the buffer tank has a volume of 300-400 milliliters.
5. The safety and environmental protection unconventional gas well effusion testing device according to claim 1, characterized in that the installation position of the on-off valve air inlet pipe on the buffer tank is higher than the installation position of the sleeve connecting pipe.
6. A safe and environment-friendly unconventional gas well effusion test method using the safe and environment-friendly unconventional gas well effusion test device according to any of claims 1-4, characterized by comprising the following steps:
s1, introducing gas in a sleeve into a buffer tank through a sleeve interface device, a high-pressure pipeline and a sleeve connecting pipe, buffering in the buffer tank, wherein the pressure in the buffer tank is equal to the pressure of the sleeve, connecting the oil pipe interface device with an oil pipe, measuring the pressure in the oil pipe through an oil pipe pressure sensor, and measuring the pressure in the sleeve through the sleeve pressure sensor;
s2, taking the pressure difference in the sleeve pipe higher than the pressure difference in the oil pipe as a sound wave air source for testing, after the testing device receives a testing command, controlling the pulsation opening time of the switching valve according to the difference between the oil pressure and the sleeve pressure, and rapidly closing the switching valve, wherein the air in the buffer tank at the rear end of the switching valve rapidly enters the oil pipe through the switching valve, and the air in the annular space at the wellhead of the oil pipe is instantaneously compressed to generate compression shock waves; the acoustic pulse propagates down the well along the annular space of the oil pipe, the reflected acoustic pulse is generated when the acoustic pulse meets the oil pipe coupling and the gas-liquid interface, the acoustic pulse is received by the oil pipe microphone and converted into an electric signal, the electric signal is digitally processed by the control unit, the depth of the liquid level of the oil pipe is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit, so that the test of the liquid level of the oil pipe is realized;
at the same moment, at the other end of the switch valve, because the gas in the buffer tank enters the oil pipe, the volume of the gas in the buffer tank is reduced, the pressure is reduced, the gas consumption is quickly supplemented through a high-pressure pipeline, the gas in the annular space at the well mouth of the sleeve is instantaneously expanded to generate expansion shock waves, the expansion shock waves are reflected at the well mouth of the sleeve and then downwards spread along the annular space of the sleeve, the expansion shock waves encounter the coupling of the oil pipe and the gas-liquid interface to generate reflected sound wave pulses, the sound pulses are received by the microphone of the sleeve and converted into electric signals, the electric signals are digitally processed through the control unit, the depth of the liquid level of the sleeve is automatically calculated, and a test result and a curve graph are stored in a data memory of the control unit, so that the test of the liquid level of the sleeve is realized.
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| CN112983395A (en) * | 2021-02-07 | 2021-06-18 | 中国石油天然气股份有限公司 | Differential pressure driven gas well liquid level continuous monitoring system and method |
| CN115045649B (en) * | 2022-08-16 | 2022-10-28 | 成都铭鉴知源油田工程科技有限公司 | Unconventional gas reservoir oil jacket liquid level continuous monitoring system and method |
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| US4934186A (en) * | 1987-09-29 | 1990-06-19 | Mccoy James N | Automatic echo meter |
| US7373976B2 (en) * | 2004-11-18 | 2008-05-20 | Casey Danny M | Well production optimizing system |
| US8560268B2 (en) * | 2010-10-04 | 2013-10-15 | Chevron U.S.A., Inc. | System and method for sensing a liquid level |
| CN201972693U (en) * | 2010-12-24 | 2011-09-14 | 中国船舶重工集团公司第七一五研究所 | Automatic continuous oil well liquid level detection instrument |
| CN105909239A (en) * | 2016-07-06 | 2016-08-31 | 沈阳新石科技有限公司 | Multifunctional automatic oil well liquid level monitoring device |
| CN106869906A (en) * | 2017-02-24 | 2017-06-20 | 沈阳新石科技有限公司 | A kind of oil well liquid level automated watch-keeping facility, method and system |
| CN107101672A (en) * | 2017-06-16 | 2017-08-29 | 沈阳新石科技有限公司 | A kind of oil well pressure recovers test device and system |
| CN208564538U (en) * | 2018-07-26 | 2019-03-01 | 西安海联石化科技有限公司 | High-pressure gas well wellbore effusion face automated watch-keeping facility |
| CN108678729B (en) * | 2018-07-26 | 2023-07-04 | 西安海联石化科技有限公司 | Automatic monitoring device and method for accumulated liquid level of high-pressure gas well shaft |
| CN209308679U (en) * | 2018-11-12 | 2019-08-27 | 高新兴创联科技有限公司 | Well fluid level Real time auto measure device |
| CN210141124U (en) * | 2019-05-04 | 2020-03-13 | 任友得 | Oil well liquid level continuous monitoring device |
| CN210343334U (en) * | 2019-06-26 | 2020-04-17 | 西安海联石化科技有限公司 | Well drilling and completion and well workover oil testing liquid level detection device |
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