CN116556899B - N-type internal circulation self/external supply energy-saving liquid-discharging gas-producing system for gas well - Google Patents
N-type internal circulation self/external supply energy-saving liquid-discharging gas-producing system for gas well Download PDFInfo
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- CN116556899B CN116556899B CN202310405844.3A CN202310405844A CN116556899B CN 116556899 B CN116556899 B CN 116556899B CN 202310405844 A CN202310405844 A CN 202310405844A CN 116556899 B CN116556899 B CN 116556899B
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- 238000007599 discharging Methods 0.000 title description 6
- 239000007788 liquid Substances 0.000 claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000000889 atomisation Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000000605 extraction Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to an N-type internal circulation self/external supply energy-saving liquid and gas extraction system of a gas well, wherein a large oil pipe and a small oil pipe are coaxially arranged in a well wall sleeve, a sealing packer is arranged at the lower end of an annular gap between the large oil pipe and the small oil pipe, a gas jet atomizer is arranged at the upper part of the sealing packer in the small oil pipe, the lower end of the large oil pipe is communicated with the gas well through a communicating pipe, and a uniflow valve is arranged on the communicating pipe. The invention has scientific and reasonable design, can drain liquid reliably outside or adjacent to the energy of the high-pressure gas production well when the gas quantity of the well is insufficient, reasonably and fully utilizes the characteristics of gas expansion and lifting, organically combines the principles of jet flow, suction and atomization in the whole gas flowing process, fully plays the roles of carrying, pumping and lifting the gas in the U-shaped tubular column, enables the accumulated liquid in the well (pipe) to be discharged quickly and efficiently, and is not difficult to implement high-yield stable production of the oil-gas well by adding the continuous detection and intelligent control of the wellhead casing pressure and the change of the working fluid level in the well.
Description
Technical Field
The invention belongs to the technical field of oil and gas extraction processes in oilfield development, and particularly relates to an N-type internal circulation self/external supply energy-saving liquid and gas extraction system of a gas well.
Background
At present, the oil field generally adopts the following measures and process technologies for gas well development of easy-to-accumulate liquid (water) in a gas production well: one is gas lift technology, namely, gas is injected (or foaming agent is added, foam is simply called foam drainage) into the annular space of a gas production oil pipe column and a sleeve in a well, the bottom back pressure is reduced by gas expansion water carrying drainage to obtain the productivity, the technology has low efficiency, low recovery yield and poor adaptability; the second is by the gas atomization fluid-discharge device process technology of the underground installation, namely install the gas atomizer in the lower end of the gas-producing oil tubular column, after making full use of stratum gas energy and liquid (water) atomization, carry the liquid (water) to the ground by gas expansion, atomization, reduce the back pressure of the bottom of the well and obtain the productivity, the technology is poorly adaptable, the well with low stratum energy is inadaptable; thirdly, adopting a gas lifting plunger process technology in a gas production oil pipe column, wherein the technology also reduces the back pressure at the bottom of the well by using the gas lifting plunger liquid of the well, has poor adaptability and is not suitable for wells with low stratum energy; the four processes are to pump out the water accumulated in the well by using external mechanical power, such as a pumping unit, an electric pump, a screw pump, a hydraulic jet pump and the like, so as to obtain the capacity, but the drainage process has high cost and troublesome management.
The invention can fully utilize the high-pressure gas produced in the well casing, continuously detect the intelligent control flow of the pressure wellhead through the wellhead liquid level, and utilize the N-shaped gas channel formed in the well, namely the large oil pipe and the small oil pipe annular space in the well and the channel in the small oil pipe column; after the gas at the lowest end of the small oil pipe is accelerated to spray the atomizer, the accumulated liquid is easily carried and discharged to the ground from the small oil pipe column, so that the back pressure at the bottom of the well is reduced, and the productivity is obtained; and secondly, when the energy of the well is insufficient, the energy of the external or adjacent high-pressure gas well is reliably utilized to carry out intelligent drainage and gas production on the well by utilizing the intelligent control flow of the continuous detection pressure wellhead of the working fluid level of the well, so that the gas well can obtain high and stable production for a long time. The drainage system is suitable for the development of gas producing wells of any energy of stratum, and is suitable for gas producing wells of high-yield liquid (water) and low-yield liquid (water) of the stratum. The drainage system not only greatly reduces the production cost of the development of the gas well of the current oil field, but also improves the intelligent management level of the gas well.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an N-type internal circulation self/external supply energy-saving liquid drainage gas production system, which is an effective, energy-saving, intelligent and simple system for recovering the gas production amount of a primary well by reducing the back pressure of liquid drainage (water) required for reducing the production and stopping the production due to the rising of the back pressure of a water accumulation bottom in the well of the gas production well; in addition, the system can drain liquid by external or adjacent high-pressure gas producing well energy when the well gas quantity is insufficient, and has the advantages of low investment cost, intelligence, energy conservation, convenience, high liquid drainage efficiency and quick response.
The invention solves the technical problems by the following technical proposal:
An energy-conserving flowing back gas production system of gas well "N" type inner loop is supplied certainly/outward which characterized in that: the gas jet atomizer is arranged on the upper portion of the sealing packer in the small oil pipe, the lower end of the large oil pipe is communicated with a gas well through an integrally arranged communicating pipe, a uniflow valve is arranged on the communicating pipe, and the well wall sleeve, the large oil pipe and the small oil pipe form an N-shaped gas-liquid circulation channel of the gas well.
And the bottom end of the communicating pipe is a horn mouth.
And the bottom end of the pipe column of the large oil pipe is separated from the gas well gas producing layer by 20-50 m.
And the check valve is arranged 20-100 m above the inlet of the communicating pipe, and the sealing packer is positioned 20-50 m above the check valve.
And the gas jet atomizer on the small oil pipe is positioned 5-10 m above the sealing packer.
The invention has the advantages and beneficial effects that:
1. According to the gas well 'N' -shaped internal circulation self/external supply energy-saving liquid and gas production system, an 'N' -shaped channel is formed in a shaft by utilizing a double oil pipe with concentric size in the shaft and a well wall sleeve, the detection is carried out by a continuous detection pressure controller of the working fluid level of a well head sleeve, and the high-pressure gas in the well sleeve is forced to fully pass through the 'N' -shaped channel in the shaft by combining the annular fluid level and the pressure change condition of the well, so that the gas jet ejector at the bottommost end of a small oil pipe is used for carrying and discharging the underground effusion: firstly, fully utilizing gas continuously produced in the well casing, when the air pressure is increased to a certain pressure value, under the control of an intelligent control flow of a working fluid level continuous detection pressure wellhead, the high-pressure gas is forced to pass through a concentric large tubular column annulus in the well and a gas acceleration jet atomizer at the lower end of a small tube, and then is discharged to the ground together with bottom liquid in the small tubing column, so that bottom back pressure is reduced to obtain productivity; and secondly, when the energy of the well is insufficient, the well can be discharged and produced by intelligent drainage by external or adjacent high-pressure gas well energy, so that the gas well can obtain high and stable production for a long time. The drainage system reasonably and skillfully forms an N-shaped U-shaped pipe channel among a well wall sleeve, a large and small oil pipe (concentric double pipe) column, an annular packer at the inner lower end of the large and small oil pipe column, a gas jet atomizer at the lower end of a small pipe and a uniflow valve at the lower end of the large pipe, so that high-pressure ring air at the upper part of the well wall sleeve is subjected to wellhead intelligent flow control by continuously detecting pressure through a wellhead working fluid level, namely annular space of the large oil pipe and the small oil pipe column, namely annular space of the gas jet atomizer at the lower end of the small oil pipe and a pipeline from the inner side of the small oil pipe to the wellhead, and underground accumulated liquid is carried out, and the back pressure at the bottom of the well is reduced to obtain productivity.
2. The gas well 'N' -shaped internal circulation self/external supply energy-saving liquid and gas extraction system can reliably perform liquid extraction outside or adjacent to the energy of the high-pressure gas production well when the gas amount of the gas well is insufficient, and has the advantages of low investment cost, intelligence, energy saving, convenience, high liquid extraction efficiency and quick response.
3. The invention relates to an N-type internal circulation self/external supply energy-saving liquid and gas extraction system of a gas well, which reasonably and fully utilizes the characteristics of gas expansion and lifting, organically combines the principles of jet flow, suction and atomization in the whole gas flow process, fully plays the roles of carrying, sucking and lifting gas in a U-shaped tubular column, enables the accumulated liquid in the well (pipe) to be rapidly and efficiently discharged, and is not difficult to implement high-yield stable production of the oil-gas well by adding wellhead casing pressure and continuous detection intelligent control of change of the working fluid level in the well.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic diagram of the intelligent wellhead control of the present invention.
Description of the reference numerals
1-Well wall sleeve, 2-large oil pipe, 3-small oil pipe, 4-sealing packer, 5-gas jet atomizer, 6-single flow valve, 7-communicating pipe and 8-bell mouth.
Detailed Description
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
As shown in FIG. 1, an N-type internal circulation self/external supply energy-saving liquid-discharging gas-producing system for a gas well is innovative in that: including wall of a well sleeve 1, big oil pipe 2 and little oil pipe 3, coaxial installation in the wall of a well sleeve 1 big oil pipe 2 and little oil pipe 3, sealed packer 4 is installed to the annular clearance lower extreme of big oil pipe 2 and little oil pipe 3, be located in the little oil pipe 3 sealed packer 4 upper portion is installed gas jet atomizer 5, big oil pipe 2 lower extreme is through the communicating pipe 7 and the gas well UNICOM of integrative setting, and the bottom of communicating pipe 7 is horn mouth 8, install uniflow valve 6 on the communicating pipe 7, wall of a well sleeve 1, big oil pipe 2 and little oil pipe 3 form gas well "N" type gas-liquid circulation passageway.
The space between the bottom end of the pipe column of the large oil pipe 2 and the gas producing layer of the gas well is 20-50 m; the check valve 6 is arranged 20-100 m above the inlet of the communicating pipe 7, and the sealing packer 4 is positioned 20-50 m above the check valve 6; the gas jet atomizer 5 on the small oil pipe 3 is positioned 5-10 m above the sealing packer 4.
According to the design, the whole set of liquid draining concentric pipe columns are put into a shaft to make an intelligent gas production wellhead, the wellhead casing pressure and the wellhead continuous detection intelligent control flow of the working fluid level in the shaft are installed, as shown in figure 2, because the system is a sleeve one-wing gas production output, the intelligent control valve is installed on the sleeve outer output flow, the well wall sleeve 1 is communicated with a large oil pipe 2 one-wing outlet and is also installed with the intelligent control valve for control, the other-wing outlet of the well wall sleeve 1 is installed with the wellhead continuous detection intelligent control generator of the working fluid level in the shaft, and the small oil pipe 3 outer output is also installed with the intelligent control valve for control. All the three intelligent control valves are controlled by a sleeve pressure and an intelligent control flow for continuously detecting the working fluid level in the well.
After the construction, flow transformation and control installation work are completed, the ground high-pressure gas injection flow is connected from the outlet of one wing of the large oil pipe 2 by external adjacent high-pressure gas well energy, at the moment, the intelligent control valve of the other wing communicated with the well wall sleeve is closed, and the intelligent control valve of the outer output port of the small oil pipe 3 is opened. When the pressure of high-pressure gas is higher than the pressure of liquid column in a column capable of lifting the small oil pipe 3, the sealing packer 4 at the lower ends of the large oil pipe 2 and the small oil pipe 3 is used for injecting high-pressure power gas into an annulus between the large oil pipe 2 and the small oil pipe 3 from a wing outlet of the large oil pipe 2, and liquid in the annulus begins to be pressed into the column of the small oil pipe 3 through the gas jet atomizer 5 at the lower end of the column of the small oil pipe 3. Because the single-flow valve 6 is arranged at the lower end of the liquid discharge water lifting concentric double-pipe column, the pressed liquid is only discharged to the wellhead along the inner side of the pipe column of the small oil pipe 3. When all the liquid in the large oil pipe 2 and the small oil pipe 3 are pressed into the pipe column of the small oil pipe 3, the high-pressure air converts the pressure energy of the high-pressure air into the kinetic energy of a high-speed flow beam through the lower-end gas jet atomizer 5, the kinetic energy is sprayed into the throat, a low-pressure area is formed by sucking the kinetic energy at the throat, and jet, atomization, lifting and lower-end liquid suction are carried out on the liquid in the pipe. In this process, the ability of the gas to carry the liquid body of water is volatilized from the dispensing as the high pressure jet of gas at the throat atomizes the liquid in the tube. The high-speed aerodynamic force and the liquid in the pipe are mixed and continuously and rapidly discharged out of the well after being pressurized at the diffusion position at the tail part of the throat pipe, so that the liquid discharging process in the pipe column of the small oil pipe 3 is completed; when the liquid column pressure in the pipe column is lower than the working fluid level of the sleeve, the accumulated liquid in the well starts to jack up the lower end of the lifting concentric double-pipe column, a communicating check valve 6 is arranged, the accumulated liquid continuously flows into the pipe column and is discharged into the well after passing through the upper gas jet atomizer 5, the accumulated liquid is discharged out of the well in an accelerating way until the accumulated liquid operation in the well is completely discharged, and the normal gas production flow of the gas well is restored. The method is a process for recovering the productivity of the gas well in the initial stage after the operation of the gas well, and the intelligent control of the drainage of the accumulated water in the well is realized by the high-pressure gas of the casing pipe of the gas well in normal production. Therefore, the invention is a good system proposal with the most convenient, intelligent control and energy saving for obtaining high and stable production of the oil gas well.
The working principle of the invention is as follows:
When the production gas well reduces the production due to the increase of the back pressure of the bottom of the underground effusion well, when the liquid level of the underground effusion liquid rises, the continuous detection intelligent control flow of the working fluid level in the well head sleeve killing well starts, controls the sleeve gas and opens the sleeve to be communicated with the large oil pipe 2, and at the moment, the small oil pipe 3 externally-conveying low-pressure gate is opened. Because the annular area of the well wall sleeve 1 and the large oil pipe 2 of the concentric double pipe is large, the gas produced at the bottom of the well is continuously increased to form high-pressure gas. When the environmental control gas increases to a certain value, namely when the sleeve pressure rises to a certain high pressure, the liquid level of the accumulated liquid in the well is pressed into the lower end of the concentric large oil pipe 2, passes through the check valve 6, passes through the gas jet atomizer 5 and enters the upper oil pipe 3. In the process, high-pressure gas of the sleeve enters the annular space of the large oil pipe 2 and the small oil pipe 3 of the concentric double pipe to press down the liquid level of the annular effusion, and the effusion is forced to enter the small oil pipe 3 through the gas jet atomizer 5 at the lower end of the small oil pipe 3 because the sealing packer 4 arranged at the lower end runs away everywhere. At the moment, the single-flow valve 6 of the underground communication section at the extension part of the lower end of the large oil pipe 2 is closed, and the accumulated liquid entering the small oil pipe 3 can only rise to the wellhead along the inner diameter channel of the small oil pipe 3; when the gas pressure of the sleeve is increased to fully press the annular liquid surfaces of the large oil pipe 2 and the small oil pipe 3 into the small oil pipe 3, the high-pressure gas of the sleeve is used for jetting, atomizing and lifting the liquid in the small oil pipe 3 through the gas jet atomizer 5 and sucking the accumulated liquid at the lower part; when the pressure in the lower accumulated liquid is lower than the working fluid level pressure of the sleeve pipe when the pressure in the small oil pipe 3 is sucked, the underground communication check valve 6 at the lower end is opened, and the accumulated liquid in the well continuously enters the small oil pipe 3 and is discharged out of the wellhead through jet flow, atomization and gas lift. When the accumulated liquid in the well is discharged to the normal production pressure of the gas well, the well head sleeve pressure and the working fluid level in the well are continuously detected, the intelligent control flow of the pressure well head automatically closes the gate communicated with the large oil pipe 2, and the small oil pipe 3 externally-conveying low-pressure gate continues to open the normal production gas. The process is used for completely discharging the accumulated liquid in the oil well, so that the high and stable production of the gas well is realized. The technology can also complete the drainage and gas production working process by adopting an intelligent control flow of continuously detecting the pressure of the pumping pressure high-pressure gas energy of the external adjacent well through the working fluid level in the wellhead well when the energy of the well gas is insufficient.
Although the embodiments of the present invention and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.
Claims (1)
1. An energy-conserving flowing back gas production system of gas well N type inner loop is supplied certainly/outward which characterized in that: the gas well oil well casing comprises a well wall casing (1), a large oil pipe (2) and a small oil pipe (3), wherein the large oil pipe (2) and the small oil pipe (3) are coaxially arranged in the well wall casing (1), a sealing packer (4) is arranged at the lower end of an annular gap between the large oil pipe (2) and the small oil pipe (3), a gas jet atomizer (5) is arranged at the upper part of the sealing packer (4) in the small oil pipe (3), the lower end of the large oil pipe (2) is communicated with a gas well through an integrally arranged communicating pipe (7), a uniflow valve (6) is arranged on the communicating pipe (7), and the well wall casing (1), the large oil pipe (2) and the small oil pipe (3) form an N-shaped gas-liquid circulation channel of the gas well;
the bottom end of the communicating pipe (7) is provided with a horn mouth (8);
The space between the bottom end of the pipe column of the large oil pipe (2) and the gas producing layer of the gas well is 20-50 m;
The check valve (6) is arranged 20-100 m above the inlet of the communicating pipe (7), and the sealing packer (4) is positioned 20-50 m above the check valve (6);
The gas jet atomizer (5) on the small oil pipe (3) is positioned 5-10 m above the sealing packer (4);
when the production gas well reduces the production due to the increase of the back pressure of the bottom of the underground accumulated liquid, and the liquid level of the underground accumulated liquid rises, starting an intelligent control flow for continuously detecting the working liquid level in the well head sleeve killing well, controlling sleeve gas, opening a gate for communicating the sleeve with the large oil pipe (2), and opening an external low-pressure gate of the small oil pipe (3); the annular area of the well wall sleeve (1) and the large oil pipe (2) of the concentric double pipe is large, and the gas produced at the bottom of the well is continuously increased to form high-pressure gas;
When the annular gas increases to a certain value, namely when the sleeve pressure rises to a certain high pressure, the liquid level of the accumulated liquid in the well is pressed into the lower end of the concentric large oil pipe (2) and enters the small oil pipe (3) at the upper part after passing through the uniflow valve (6) and passing through the gas jet atomizer (5); in the process, high-pressure gas of the sleeve enters a large oil pipe (2) and a small oil pipe (3) of the concentric double pipe to downwards press the liquid level of the annular effusion, and as the sealing packer (4) arranged at the lower end runs out everywhere, effusion is forced to enter the small oil pipe (3) through the gas jet atomizer (5) at the lower end of the small oil pipe (3); at the moment, a single-flow valve (6) of a communicating section at the lower end extension part of the large oil pipe (2) and the underground is closed, and accumulated liquid entering the small oil pipe (3) can only rise to the wellhead along the inner diameter channel of the small oil pipe (3); when the gas pressure of the sleeve is increased to fully press the annular liquid surfaces of the large oil pipe (2) and the small oil pipe (3) into the small oil pipe (3), the high-pressure gas of the sleeve jets, atomizes and lifts the liquid in the small oil pipe (3) through the gas jet atomizer (5) and sucks the accumulated liquid at the lower part; when the pressure in the lower accumulated liquid is pumped to the small oil pipe (3) and is lower than the pressure of the working fluid level of the sleeve, the underground communication check valve (6) at the lower end is opened, and at the moment, the accumulated liquid in the well continuously enters the small oil pipe (3) and is discharged out of the wellhead through jet flow, atomization and gas lift; when the accumulated liquid in the well is discharged to the normal production pressure of the gas well, the well head sleeve pressure and the working fluid level in the well are continuously detected, the intelligent control flow of the pressure well head automatically closes the gate communicated with the large oil pipe (2), and the small oil pipe (3) externally-conveying low-pressure gate is continuously opened for normal production gas production.
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| CN202310405844.3A CN116556899B (en) | 2023-04-17 | 2023-04-17 | N-type internal circulation self/external supply energy-saving liquid-discharging gas-producing system for gas well |
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| CN202310405844.3A CN116556899B (en) | 2023-04-17 | 2023-04-17 | N-type internal circulation self/external supply energy-saving liquid-discharging gas-producing system for gas well |
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| RU2273772C1 (en) * | 2004-12-20 | 2006-04-10 | Зиновий Дмитриевич Хоминец | Method of operation of oil-well jet plant at hydraulic fracturing of formation |
| CN103670336B (en) * | 2012-09-18 | 2016-06-08 | 中国石油天然气股份有限公司 | Middle-shallow layer gas well liquid drainage process pipe column and liquid drainage method |
| CN203230391U (en) * | 2013-03-06 | 2013-10-09 | 中国石油天然气股份有限公司 | Multi-stage combined type jet pump liquid discharge pipe column |
| CN103233923B (en) * | 2013-04-18 | 2015-08-26 | 西安交通大学 | A kind of lead-jetting device getting rid of pit shaft hydrops |
| CN104790916B (en) * | 2015-04-24 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN105443088B (en) * | 2016-01-14 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Low-pressure gas well two-fluid supersonic atomization water pumping gas production system and its technique |
| CN205618138U (en) * | 2016-05-03 | 2016-10-05 | 北京泰斯特威尔技术有限公司 | Double -barrelled negative pressure drainage gas production equipment |
| CN110107264A (en) * | 2019-05-22 | 2019-08-09 | 迪瑞普技术（北京）有限公司 | A kind of gaslift suitable for gas well Life cycle water pumping gas production |
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| CN108533536A (en) * | 2018-03-13 | 2018-09-14 | 北京泰斯特威尔技术有限公司 | A kind of jet atomization device and low pressure natural gas well head harvester |
| CN112539047A (en) * | 2020-12-22 | 2021-03-23 | 西安荣达石油工程有限公司 | Process pipe column capable of protecting oil-gas layer and realizing efficient gas lift liquid drainage and process |
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