CN111911120A - Continuous concentric tube pressurization jet flow liquid drainage gas production device and method - Google Patents
Continuous concentric tube pressurization jet flow liquid drainage gas production device and method Download PDFInfo
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- CN111911120A CN111911120A CN202010671102.1A CN202010671102A CN111911120A CN 111911120 A CN111911120 A CN 111911120A CN 202010671102 A CN202010671102 A CN 202010671102A CN 111911120 A CN111911120 A CN 111911120A
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- tube
- pipe
- inner tube
- gas production
- production device
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 26
- 238000007599 discharging Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a continuous concentric tube pressurizing jet flow liquid discharge gas production device and method, and belongs to the technical field of water drainage gas production. The device comprises an outer pipe and an inner pipe arranged in the outer pipe through a supporting pipe, wherein the outer pipe and the inner pipe are coaxial, and the supporting pipe is sleeved between the inner pipe and the outer pipe; a concentric tube annulus is formed between the upper part of the inner tube and the outer tube, a one-way valve is accommodated below the inner tube, the one-way valve seals the bottom opening of the inner tube through a sealing ball, and a diversion trench is formed between the one-way valve and the inner wall of the inner tube; the pipe wall of the upper part of the inner pipe is contracted inwards to form a throat pipe section, and the pipe wall of the inner pipe below the throat pipe section is provided with a plurality of jet holes. The invention utilizes the concentric pipe to form the jet phenomenon in the pit, so as to improve the liquid discharge efficiency, and can adjust the depth of the tool in the pit according to the depth of the liquid level in the pit, thereby preventing the tool from being lifted immovably due to the liquid level; and the wellhead flow is simple, and the construction cost is reduced.
Description
Technical Field
The invention belongs to the technical field of drainage gas production, and relates to a continuous concentric tube pressurization jet flow liquid drainage gas production device and a method.
Background
The existing water drainage and gas production technology is the most widely used plunger technology, but the plunger technology has high requirements on ground flow and high later maintenance cost, and the situation that the well bottom liquid level is too high and the well bottom liquid level is lifted can occur. The foam discharging technology requires higher labor cost, the liquid discharging effect is not obvious, long-term operation is needed, and the later investment is higher. The nitrogen gas lift has higher requirement on ground pressurization equipment, the injection pressure is too high, the stratum is easy to be damaged, the pressure is too low, the condition of unmovable lifting can occur,
therefore, the device which is simple in wellhead flow and obvious in liquid drainage effect is very necessary.
Disclosure of Invention
The invention aims to solve the problem that the gas well is seriously accumulated liquid to finally cause production reduction or production stop by providing a continuous concentric tube pressurized jet liquid discharging and gas producing device and method.
The invention is realized by the following technical scheme:
the device comprises an outer pipe and an inner pipe arranged in the outer pipe through a supporting pipe, wherein the outer pipe and the inner pipe are coaxial, and the supporting pipe is sleeved between the inner pipe and the outer pipe; a concentric tube annulus is formed between the upper part of the inner tube and the outer tube, a one-way valve is accommodated below the inner tube, the one-way valve seals the bottom opening of the inner tube through a sealing ball, and a diversion trench is formed between the one-way valve and the inner wall of the inner tube; the pipe wall of the upper part of the inner pipe is contracted inwards to form a throat pipe section, and the pipe wall of the inner pipe below the throat pipe section is provided with a plurality of jet holes.
The plurality of jet holes are uniformly distributed on the upper pipe wall of the inner pipe.
A thread section is formed on the inner wall of the upper part of the supporting tube, and the supporting tube is connected with the inner tube through the thread section; the supporting tube is connected with the outer tube through a screw thread.
And a sealing element is arranged between the supporting tube and the outer tube.
The sealing element is annular, and an annular groove for arranging the sealing element is formed in the outer wall of the lower part of the supporting tube.
The check valve further comprises a baffle and a buffer spring, the baffle is arranged in the inner pipe and is far away from the opening at the bottom of the inner pipe, one end of the buffer spring is connected to the baffle, and the other end of the buffer spring is connected with the sealing ball; the sealing ball is arranged at the bottom opening of the inner tube in a retractable manner through the buffer spring, and the baffle plate is provided with an overflowing hole.
A centralizer is sleeved outside the inner pipe and at a position close to the one-way valve
The invention also provides a method for discharging liquid and producing gas based on the continuous concentric tube pressurized jet flow, which comprises the following operations:
the ground power equipment pressurizes gas, injects the pressurized gas from the concentric tube annulus, and then injects the pressurized gas into the inner tube through the jet hole to form negative pressure around the jet hole while forming high-pressure medium flow, a spring of the one-way valve is pushed by air pressure to shrink, accumulated liquid on the lower portion of the inner tube is sucked into the inner tube through the diversion trench, the accumulated liquid and the high-pressure medium flow are mixed and taken out, and after being accelerated by the throat section, the accumulated liquid is lifted to the ground to be discharged outside.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a continuous concentric tube pressurized jet liquid-discharging gas production device which comprises an outer tube and an inner tube which are coaxial, wherein the inner tube is arranged in the outer tube through a supporting tube, a one-way valve for preventing bottom hole accumulated liquid from falling back is accommodated below the inner tube, and a diversion trench is formed between the one-way valve and the inner wall of the inner tube; the supporting tube is located on the lower portion of the inner tube, a concentric tube annulus is formed between the upper portion of the inner tube and the outer tube, the tube wall of the upper portion of the inner tube shrinks inwards to form a throat section, and a plurality of jet holes are formed in the lower portion of the throat section on the tube wall of the upper portion of the inner tube. The invention utilizes the concentric pipe to form the jet phenomenon in the pit, so as to improve the liquid discharge efficiency, and can adjust the depth of the tool in the pit according to the depth of the liquid level in the pit, thereby preventing the tool from being lifted immovably due to the liquid level; and the wellhead flow is simple, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner tube according to the present invention;
FIG. 3 is a schematic view of the check valve according to the present invention;
in the figure, 1-outer tube, 2-support tube, 21-thread section, 22-annular groove, 3-inner tube, 31-throat section, 32-jet hole, 4-one-way valve, 41-buffer spring, 42-sealing ball and 5-centralizer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a continuous concentric tube pressurized jet liquid discharge gas production device, which comprises an outer tube 1 and an inner tube 3 arranged in the outer tube 1 through a support tube 2, wherein the outer tube 1 and the inner tube 3 are coaxial, and the support tube 2 is sleeved between the inner tube 3 and the outer tube 1; a concentric tube annulus is formed between the upper part of the inner tube 3 and the outer tube 1, a one-way valve 4 is accommodated below the inner tube 3, the bottom opening of the inner tube 3 is sealed by the one-way valve 4 through a sealing ball 42, and a diversion trench is formed between the one-way valve 4 and the inner wall of the inner tube 3; the upper pipe wall of the inner pipe 3 is contracted inwards to form a throat pipe section 31, and the pipe wall of the inner pipe 3 below the throat pipe section 31 is provided with a plurality of jet holes 32.
The invention provides a continuous concentric tube pressurized jet liquid-discharging gas production device which comprises an outer tube 1 and an inner tube 3 which are coaxial, wherein the inner tube 3 is arranged in the outer tube 1 through a supporting tube 2, a one-way valve 4 for preventing bottom hole accumulated liquid from falling back is accommodated below the inner tube 3, and a diversion trench is formed between the one-way valve 4 and the inner wall of the inner tube 3; the support tube 2 is located at the lower part of the inner tube 3, a concentric tube annulus is formed between the upper part of the inner tube 3 and the outer tube 1, the tube wall of the upper part of the inner tube is contracted inwards to form a throat section 31, and a plurality of jet holes 32 are formed in the tube wall of the upper part of the inner tube 3 below the throat section 31. The invention utilizes the concentric pipe to form the jet phenomenon in the pit, so as to improve the liquid discharge efficiency, and can adjust the depth of the tool in the pit according to the depth of the liquid level in the pit, thereby preventing the tool from being lifted immovably due to the liquid level; and the wellhead flow is simple, and the construction cost is reduced.
In order to homogenize the gas to be fed and improve the liquid carrying capacity, referring to fig. 2, a plurality of the jet holes 32 are uniformly distributed on the upper pipe wall of the inner pipe 3.
A threaded section 21 is formed on the inner wall of the upper part of the support tube 2, and the support tube 2 is connected with the inner tube 3 through the threaded section 21; the support tube 2 is connected with the outer tube 1 through screw threads.
Because the pressure of the output gas is larger, a sealing member is arranged between the supporting tube 2 and the outer tube 1 to enhance the sealing property between the supporting tube 2 and the outer tube 1.
Preferably, the sealing element is annular, and an annular groove 22 for arranging the sealing element is formed on the outer wall of the lower part of the supporting tube 2. In addition, the seal structure below the concentric tube annulus between the inner tube 3 and the outer tube 1 was subjected to a 35Mpa hydraulic test. So as to prevent high-pressure medium from entering the shaft and causing secondary pollution to the shaft.
Specifically, the check valve 4 further comprises a baffle and a buffer spring 41, the baffle is arranged in the inner tube 3 and is far away from the opening at the bottom of the inner tube 3, one end of the buffer spring 41 is connected to the baffle, and the other end of the buffer spring is connected to the sealing ball 42; the sealing ball 42 is retractably arranged at the bottom opening of the inner tube 3 through the buffer spring 41, and the baffle plate is provided with an overflowing hole.
In order to ensure the concentricity of the inner pipe 3 and the outer pipe, a centralizer 5 is sleeved outside the inner pipe 3 and at a position close to the one-way valve 4. Most of the centralizers 5 used on site are spring-type lantern-shaped frameworks. The structure is divided into a riveting type and a hinged type; the form is various, uses more reliably, safe.
In one implementation, the technical parameters of the continuous concentric tube pressurized jet liquid discharge gas production device are as follows:
the invention also provides a continuous concentric tube pressurized jet flow liquid discharge gas production method, which comprises the following operations: the ground power equipment pressurizes gas in an external transportation system, the gas is injected into the underground from the concentric tube annulus, then the gas is injected into the inner tube 3 through the jet hole 32, negative pressure is formed around the jet hole 32 while high-pressure medium flow is formed, the spring of the one-way valve 4 is contracted, lower accumulated liquid is sucked into the inner tube 3 after passing through the guide groove, the high-pressure medium flow and the accumulated liquid are mixed and transfer energy to the accumulated liquid, and the accumulated liquid is lifted to the outside of the ground after being accelerated by the throat pipe section 31.
The ground power equipment injects the well casing gas or the gas in the external transportation system into the well from the annular space of the concentric tube, then the gas is injected into the inner tube 3 from the jet hole 32, the high-speed jet flow enables a low-pressure area to be formed around the jet hole 32, so that the effusion at the lower part is sucked into the inner tube 3, the energy of the power flow is transferred to the produced fluid, and the produced fluid flows out of a shaft along with the high-speed airflow after being mixed.
After the well casing gas or the gas in the system is pressurized on the ground, the high-pressure jet flow is formed at the jet hole 32, negative pressure is formed by suction, the gas enters the upper part of the inner pipe 3 after being accelerated by the throat pipe section 31, and the liquid is lifted to the ground to be discharged outside under the action of the high-pressure medium flow.
The lower part is connected with a check valve 4, when negative pressure is formed by jet flow, the buffer spring 41 is compressed, the sealing ball 42 is retracted, the check valve 4 is opened, and the negative pressure flow is formed in the inner pipe 3 after passing through the diversion trench.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (8)
1. The continuous concentric tube pressurized jet liquid discharge gas production device is characterized by comprising an outer tube (1) and an inner tube (3) arranged in the outer tube (1) through a support tube (2), wherein the outer tube (1) and the inner tube (3) are coaxial, and the support tube (2) is sleeved between the inner tube (3) and the outer tube (1); a concentric tube annulus is formed between the upper part of the inner tube (3) and the outer tube (1), a one-way valve (4) is accommodated below the inner tube (3), the bottom opening of the inner tube (3) is sealed by the one-way valve (4) through a sealing ball (42), and a diversion trench is formed between the one-way valve (4) and the inner wall of the inner tube (3); the inner pipe is characterized in that the upper pipe wall of the inner pipe (3) is inwards contracted to form a throat pipe section (31), and the pipe wall of the inner pipe (3) below the throat pipe section (31) is provided with a plurality of jet holes (32).
2. The continuous concentric tube pressurized jet liquid discharge gas production device according to claim 1, characterized in that a plurality of the jet holes (32) are evenly distributed on the upper tube wall of the inner tube (3).
3. The continuous concentric tube pressurized jet liquid discharge gas production device according to claim 1, characterized in that the upper inner wall of the support tube (2) is formed with a threaded section (21), and the support tube (2) is connected with the inner tube (3) through the threaded section (21); the supporting tube (2) is connected with the outer tube (1) through screw threads.
4. The continuous concentric tube pressurized jet liquid discharge gas production device according to claim 1, characterized in that a seal is provided between the support tube (2) and the outer tube (1).
5. The continuous concentric tube pressurized jet liquid discharge gas production device according to claim 4, wherein the sealing member is annular, and an annular groove (22) for arranging the sealing member is formed in the outer wall of the lower part of the support tube (2).
6. The continuous concentric tube pressurized jet liquid discharge gas production device according to claim 1, wherein the check valve (4) further comprises a baffle plate and a buffer spring (41), the baffle plate is arranged in the inner tube (3) and far away from the bottom opening of the inner tube (3), one end of the buffer spring (41) is connected to the baffle plate, and the other end of the buffer spring is connected to the sealing ball (42); the sealing ball (42) is arranged at the bottom opening of the inner tube (3) in a retractable manner through the buffer spring (41), and the baffle plate is provided with an overflowing hole.
7. The continuous concentric tube pressurized jet drainage gas production device according to claim 6, characterized in that a centralizer (5) is sleeved outside the inner tube (3) at a position close to the one-way valve (4).
8. A continuous concentric tube pressurized jet liquid discharge gas production method according to any one of claims 1 to 7, characterized in that it comprises the following operations:
the ground power equipment pressurizes gas, injects the gas from the concentric tube annulus, then injects the gas into the inner tube (3) through the jet hole (32), forms negative pressure around the jet hole (32) while forming high-pressure medium flow, a spring of the one-way valve (4) is pushed by air pressure to shrink, accumulated liquid at the lower part of the inner tube (3) is sucked into the inner tube (3) through the diversion trench, the accumulated liquid and the high-pressure medium flow are mixed and taken out, and the accumulated liquid is lifted to the outside of the ground after being accelerated by the throat pipe section (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671102.1A CN111911120A (en) | 2020-07-13 | 2020-07-13 | Continuous concentric tube pressurization jet flow liquid drainage gas production device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671102.1A CN111911120A (en) | 2020-07-13 | 2020-07-13 | Continuous concentric tube pressurization jet flow liquid drainage gas production device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111911120A true CN111911120A (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010671102.1A Pending CN111911120A (en) | 2020-07-13 | 2020-07-13 | Continuous concentric tube pressurization jet flow liquid drainage gas production device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN111911120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117662076A (en) * | 2024-02-02 | 2024-03-08 | 陕西汇丰悦石油科技开发有限公司 | A liquid discharge and gas collection device and a liquid discharge and gas collection method |
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| CN201546681U (en) * | 2009-11-17 | 2010-08-11 | 中国石油天然气股份有限公司 | Oil-water sucker |
| CN103670336A (en) * | 2012-09-18 | 2014-03-26 | 中国石油天然气股份有限公司 | Liquid drainage process pipe string and liquid drainage method for medium and shallow gas wells |
| CN104594817A (en) * | 2014-11-29 | 2015-05-06 | 牡丹江市金环石化设备有限公司 | Oil tube anchor with triple functions |
| CN205858288U (en) * | 2016-06-30 | 2017-01-04 | 中国石油天然气股份有限公司 | A plunger gas lift drainage and gas recovery device with velocity string |
| 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 |
| CN212479181U (en) * | 2020-07-13 | 2021-02-05 | 陕西汇丰悦石油科技开发有限公司 | Continuous concentric tube pressurizing jet flow liquid drainage gas production device |
-
2020
- 2020-07-13 CN CN202010671102.1A patent/CN111911120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546681U (en) * | 2009-11-17 | 2010-08-11 | 中国石油天然气股份有限公司 | Oil-water sucker |
| CN103670336A (en) * | 2012-09-18 | 2014-03-26 | 中国石油天然气股份有限公司 | Liquid drainage process pipe string and liquid drainage method for medium and shallow gas wells |
| CN104594817A (en) * | 2014-11-29 | 2015-05-06 | 牡丹江市金环石化设备有限公司 | Oil tube anchor with triple functions |
| CN205858288U (en) * | 2016-06-30 | 2017-01-04 | 中国石油天然气股份有限公司 | A plunger gas lift drainage and gas recovery device with velocity string |
| 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 |
| CN212479181U (en) * | 2020-07-13 | 2021-02-05 | 陕西汇丰悦石油科技开发有限公司 | Continuous concentric tube pressurizing jet flow liquid drainage gas production device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117662076A (en) * | 2024-02-02 | 2024-03-08 | 陕西汇丰悦石油科技开发有限公司 | A liquid discharge and gas collection device and a liquid discharge and gas collection method |
| CN117662076B (en) * | 2024-02-02 | 2024-04-09 | 陕西汇丰悦石油科技开发有限公司 | Liquid drainage and gas production device and liquid drainage and gas production method |
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Application publication date: 20201110 |
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