CN214091811U - Continuous gas lift drainage gas production system based on underground jet drainage and wellhead compression - Google Patents
Continuous gas lift drainage gas production system based on underground jet drainage and wellhead compression Download PDFInfo
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- CN214091811U CN214091811U CN202022886189.2U CN202022886189U CN214091811U CN 214091811 U CN214091811 U CN 214091811U CN 202022886189 U CN202022886189 U CN 202022886189U CN 214091811 U CN214091811 U CN 214091811U
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- 239000007788 liquid Substances 0.000 claims abstract description 95
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003345 natural gas Substances 0.000 claims abstract description 6
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- 238000007789 sealing Methods 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
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Abstract
The utility model relates to a natural gas field exploitation technical field discloses a continuous gas lift drainage gas production system based on spray drainage and well head compression in pit, including one end and well head gas production headtotail, the other end is connected to the continuous gas lift system in the pit shaft sleeve pipe to and set up the injection drainage ware at the oil pipe middle tube hole position of pit shaft. When a well is opened, the continuous gas lift system can reversely transmit low-pressure gas in an output pipeline to the compressor, the low-pressure gas is compressed into high-pressure gas by the compressor and then is injected into a sleeve of a shaft, liquid and gas in the well are lifted to the ground after the pressure of the gas and liquid is increased by the injection flow diverter, and the lifted gas-liquid mixture is separated into pure liquid and pure gas by the gas-liquid separator; when the gas is continuously produced, one part of pure gas is transported out, the other part of pure gas is continuously transported to the compressor for compression and then injected into the sleeve of the shaft, after the pressure is increased by the jet flow diverter, the liquid and the gas in the well are lifted to the ground, and the circulation is carried out, so that the continuous gas production is realized.
Description
Technical Field
The utility model relates to a natural gas field exploitation technical field, in particular to gas production system is adopted in continuous gas lift drainage based on jet drainage in pit and well head compression.
Background
At present, the continuous gas lift of water-producing gas wells in various domestic atmospheric fields adopts the main mode that a gas injection pipeline and a production pipeline are laid between a well head and a gas collecting station in the same ditch, high-pressure gas is injected into a well through the gas injection pipeline by a gas collecting station compressor, and when the pressure of the high-pressure gas is greater than the sum of the pressure of the production pipeline and the pressure generated by the height of a liquid column in the well, the liquid column in the well and gas above the liquid column are lifted to the production pipeline to reach the gas collecting station due to the principle of a U-shaped pipe. The operation is repeated in the same week, the liquid column in the well keeps the minimum height all the time, the bottom hole pressure generated by the liquid column is minimum, the production pressure difference formed by the formation pressure and the bottom hole pressure is maximum, the formation fluid is continuously transported to the shaft and is lifted to a ground production pipeline along with the injected high-pressure gas until reaching a gas collecting station; the continuous gas lift realizes the purposes of improving the utilization rate of the water-producing gas well and the well opening time rate and improving the single-well productivity.
Firstly, in the underground pipe column structure, the oil pipe shoe is communicated with the oil casing during lifting, and when the oil pipe shoe is deeply put into the well, the injection pressure of a well mouth pump is required to be high, so that the grade of a compressor is high; if the pressure grade of the compressor is reduced, a production pipe column is generally required to be pulled out to be connected with downhole tools such as a gas lift valve or an injection pump, and the process is complicated; secondly, the continuous gas lift mode of laying an air injection pipeline and a production pipeline in the same ditch between a wellhead and a gas collection station has the problems of large investment, high management and maintenance cost, low equipment utilization rate and the like for gas wells with low reservoir grade and less residual recoverable reserves.
SUMMERY OF THE UTILITY MODEL
The utility model provides a continuous gas lift drainage gas production system based on drainage and well head compression are sprayed in pit solves that the investment that current mode of laying leads to the gas well gas injection with the ditch is big, with high costs to and the current tubular column structure in pit need play the tubular column and connect gas lift valve or jet pump and the complicated problem of technology that leads to.
The utility model discloses a realize through following scheme:
the continuous gas lift drainage gas production system based on underground injection drainage and wellhead compression comprises a continuous gas lift system and an injection drainage device, wherein one end of the continuous gas lift system is connected with the wellhead gas production system, the other end of the continuous gas lift system is connected to a shaft casing, and the injection drainage device is arranged at a pipe hole part in a shaft oil pipe;
the continuous gas lift system comprises a first three-way valve arranged between a wellhead gas production system and a gas gathering station, the third end of the first three-way valve is connected to the inlet end of a gas-liquid separator, the outlet end of the gas-liquid separator is connected with the first end of a second three-way valve, the second end of the second three-way valve is connected to the inlet end of a compressor through a second needle valve and a second flowmeter in sequence, and the outlet end of the compressor is connected into a shaft sleeve through a second sleeve gate valve; the third end of the second three-way valve is connected to an external transmission pipeline through a one-way valve;
the injection flow diverter comprises a first sealing element, a second sealing element and an anchoring part which are arranged on the body from bottom to top; a plurality of annularly distributed air inlets are formed in the body between the first sealing element and the second sealing element along the horizontal direction, a nozzle, a throat pipe and a diffusion pipe are sequentially arranged at the intersected position of the air inlets upwards, and the diffusion pipe extends to the top of the body; liquid inlet channels are arranged between the adjacent air inlets along the vertical direction, and the middle upper parts of the liquid inlet channels are communicated with the throat pipe through liquid inlet holes;
the low-pressure gas in the output pipeline is compressed into high-pressure gas by a compressor and then is injected into a shaft casing, and the high-pressure gas enters the jet flow diverter along the pipe hole of the oil to be pressurized, so that the liquid and the gas in the well are lifted to enter a wellhead gas production system.
Further, well head gas production system is including setting up main control gate valve and the test gate valve on well head gas production tree, and main control gate valve below and top are connected to first needle valve through first sleeve pipe gate valve, production gate valve respectively, first needle valve loops through electromagnetism shut-off valve, first flowmeter and is connected to outside gas gathering station.
Further, the main control gate valve and the test gate valve are connected to the gas production tree through flanges; the first sleeve gate valve, the production gate valve, the first needle valve, the electromagnetic block valve, the first flowmeter, the gas-liquid separator, the second three-way valve, the second needle valve, the second flowmeter, the compressor, the second sleeve gate valve and the one-way valve are connected to a pipeline through flanges respectively.
Furthermore, the master control gate valve, the test gate valve, the first sleeve gate valve, the production gate valve and the second sleeve gate valve are all fully-open fully-closed valves.
Furthermore, when a well is opened, low-pressure gas in an output pipeline is compressed into high-pressure gas by a compressor and then is injected into a shaft sleeve, enters a nozzle along an oil pipe hole and an air inlet hole, is throttled and decompressed by the nozzle and then enters a throat pipe to form a low-pressure area, so that shaft liquid reaches the throat pipe through a liquid inlet channel and a liquid inlet hole and is mixed with the low-pressure gas; the mixed low-pressure gas and liquid are subjected to pressure rise again through the diffusion pipe and then lifted to a wellhead gas production system, and then enter a gas-liquid separator along a first three-way valve to be separated into pure liquid and pure gas;
when gas is continuously produced, one part of the pure gas is output to an output pipeline through a second three-way valve and a one-way valve; and the other part of the gas is sent to a compressor after passing through a second three-way valve, a second needle valve and a second flowmeter and is used as a gas source of the circulating gas lift, and the circulation is carried out so as to realize continuous gas production.
Furthermore, the injection drainage device is arranged to be firstly symmetrically provided with a plurality of pipe holes through steel wire operation on the oil pipe, then the injection drainage device is set at the punching position in the oil pipe, the plurality of pipe holes on the oil pipe correspond to the air inlet holes of the injection drainage device in position, and finally the oil pipe is anchored through the anchoring part.
The device further comprises a controller which is respectively connected with the first sleeve gate valve, the production gate valve, the first needle valve, the electromagnetic block valve, the first flowmeter, the gas-liquid separator, the second three-way valve, the second needle valve, the second flowmeter, the compressor, the second sleeve gate valve and the one-way valve and used for controlling the valves to be turned off.
Further, the device also comprises a combustion tank connected with the gas-liquid separator; the combustor can is used for introducing natural gas into the system for combustion when the system stops gas lift.
Further, the sewage treatment device also comprises a sewage tank which is connected with the gas-liquid separator and is used for collecting the pure liquid separated by the gas-liquid separator.
The utility model has the advantages of it is following:
1) the jet flow diverter is arranged in the oil pipe of the sleeve, and can form a low-pressure area in the throat pipe after throttling and depressurizing the compressed high-pressure gas through the nozzle, so that the shaft liquid and the low-pressure gas can be conveniently mixed, and the mixed gas-liquid mixture is lifted to the ground after being pressurized again in the diffusion pipe; the production pipe column does not need to be lifted out, the gas lift valve or the jet pump is connected, and the grade of the compressor is reduced;
2) when the well is opened, the continuous gas lift system can reversely transmit low-pressure gas in an output pipeline into a compressor, the low-pressure gas is compressed into high-pressure gas by the compressor and then is injected into a sleeve of a shaft, after the high-pressure gas is pressurized by an injection flow diverter, underground liquid and gas are lifted to the ground, and the lifted gas-liquid mixture is separated into pure liquid and pure gas by a gas-liquid separator; when the gas is continuously produced, one part of pure gas is transported out, the other part of pure gas is continuously transported to the compressor for compression and then injected into a sleeve of a shaft, after the pressure is increased by the jet flow diverter, the liquid and the gas in the well are lifted to the ground, and the circulation is carried out, so that the continuous gas production is realized; by the aid of the system, the well can be opened again for the gas well which is drowned, continuous gas lift gas source supply can be realized at a well mouth after the well is opened, gas introduced into the gas collecting station by a gas return line is not needed, and investment, management and maintenance cost is saved.
Drawings
FIG. 1 is a schematic diagram of a water drainage gas recovery system;
FIG. 2 is a schematic view of a jet flow diverter;
FIG. 3 is a sectional view taken along A-A of the inlet hole;
FIG. 4 is a perspective view of the air intake hole portion;
in the figure: 1-main control gate valve, 2-test gate valve, 3-first sleeve gate valve, 4-production gate valve, 5-first needle valve, 6-electromagnetic block valve, 7-first flowmeter, 8-first three-way valve, 9-gas-liquid separator, 10-second three-way valve, 11-second needle valve, 12-second flowmeter, 13-compressor, 14-second sleeve gate valve, 15-one-way valve, 16-injection flow diverter, 160-body, 161-first sealing element, 162-second sealing element, 163-anchoring part, 164-air inlet, 165-nozzle, 166-throat, 167-diffusion pipe, 168-liquid inlet channel, 169-liquid inlet, 18-combustion tank and 19-sewage tank.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Example 1
A continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression, as shown in fig. 1, comprises a continuous gas lift system with one end connected with a wellhead gas production system and the other end connected to a shaft casing, and a jet drainage device 16 arranged at the position of a pipe hole in a shaft oil pipe;
the wellhead gas production system comprises a main control gate valve 1 and a test gate valve 2 which are connected to a wellhead gas production tree through flanges, the lower part and the upper part of the main control gate valve 1 are respectively connected to a first needle valve 5 through a first casing gate valve 3 and a production gate valve 4, and the first needle valve 5 is connected to an external gas collecting station through an electromagnetic block valve 6 and a first flowmeter 7 in sequence; the main control gate valve 1, the test gate valve 2, the first sleeve gate valve 3 and the production gate valve 4 are all full-open and full-closed valves; the first sleeve gate valve 3, the production gate valve 4, the first needle valve 5, the electromagnetic block valve 6 and the first flow meter 7 are respectively connected to a pipeline through flanges;
the continuous gas lift system comprises a first three-way valve 8 arranged between a wellhead gas production system and a gas gathering station, the third end of the first three-way valve 8 is connected to the inlet end of a gas-liquid separator 9, the outlet end of the gas-liquid separator 9 is connected with the first end of a second three-way valve 10, the second end of the second three-way valve 10 is connected to the inlet end of a compressor 13 sequentially through a second needle valve 11 and a second flowmeter 12, and the outlet end of the compressor 13 is connected into a shaft sleeve through a second sleeve gate valve 14; the third end of the second three-way valve 10 is connected to an external transmission pipeline through a one-way valve 15; the second sleeve gate valves 14 are all fully-opened and fully-closed valves; the gas-liquid separator 9, the second three-way valve 10, the second needle valve 11, the second flowmeter 12, the compressor 13, the second sleeve gate valve 14 and the one-way valve 15 are respectively connected to pipelines through flanges;
as shown in FIG. 2, the jet flow diverter 16 includes a first seal 161, a second seal 162 and an anchor member 163 disposed on the body 160 from bottom to top; as shown in fig. 3 and 4, a plurality of annularly distributed air inlets 164 are formed in the body 160 between the first sealing element 161 and the second sealing element 162 along the horizontal direction, a nozzle 165, a throat 166 and a diffuser 167 are sequentially arranged at the intersection of the air inlets 164, and the diffuser 167 extends to the top of the body 160; liquid inlet channels 168 are formed between the adjacent air inlet holes 164 along the vertical direction, and the middle upper parts of the liquid inlet channels 168 are communicated with the throat pipe 166 through liquid inlet holes 169;
the device also comprises a controller which is respectively connected with the first sleeve gate valve 3, the production gate valve 4, the first needle valve 5, the electromagnetic block valve 6, the first flow meter 7, the gas-liquid separator 9, the second three-way valve 10, the second needle valve 11, the second flow meter 12, the compressor 13, the second sleeve gate valve 14 and the one-way valve 15 and used for controlling the valves to be turned off, and the controller adopts a PLC controller.
The installation method of the continuous gas lift drainage gas production system comprises the following steps:
a main control gate valve 1 and a test gate valve 2 in a wellhead gas production system are connected to a gas production tree through flanges, and a first sleeve gate valve 3, a production gate valve 4, a first needle valve 5, an electromagnetic block valve 6 and a first flow meter 7 are respectively connected to a pipeline through flanges;
a gas-liquid separator 9, a second three-way valve 10, a second needle valve 11, a second flowmeter 12, a compressor 13, a second sleeve gate valve 14 and a one-way valve 15 in the continuous gas lift system are respectively connected to pipelines through flanges;
the injection drainage device 16 is arranged in a way that a plurality of pipe holes are symmetrically formed in the oil pipe through steel wire operation, the injection drainage device 16 is set at the drilling position in the oil pipe through steel wire operation, the pipe holes in the oil pipe correspond to the air inlet holes 164 of the injection drainage device 16 in position, and finally the oil pipe is anchored through an anchoring part, so that the injection drainage device 16 is prevented from moving up and down.
The working principle of the continuous gas lift drainage gas production system is as follows:
when a well is opened, the controller controls the main control gate valve 1, the production gate valve 4, the electromagnetic block valve 6, the first flowmeter 7 and the second casing gate valve 14 to be normally opened, the second end and the third end of the first three-way valve 8 and the first end and the second end of the second three-way valve 10 are both opened, and the compressor 13 is controlled to be started; the low-pressure gas in the output pipeline enters a gas-liquid separator 9 through a first three-way valve 8 and is separated into pure liquid and pure gas; pure gas is drained through a second three-way valve 10, controlled by a second needle 1 and metered by a second flowmeter 12 to reach a compressor 13; the compressor 13 compresses low-pressure gas into high-pressure gas, the high-pressure gas is injected into a shaft sleeve along the second sleeve gate valve 14, the high-pressure gas entering the sleeve enters the nozzle 165 along the oil pipe opening and the air inlet 164, the low-pressure gas after throttling and pressure reduction enters the throat pipe 166, shaft liquid reaches the throat pipe 166 through the liquid inlet channel 168 and the liquid inlet 169 and is mixed with the low-pressure gas to form a gas-liquid mixture, and the diffusion pipe 167 lifts the gas-liquid mixture to the wellhead gas production system when the gas pressure is absolutely higher than the pressure in the wellhead gas production system; the controller controls the second end of the first three-way valve 8 to be closed and controls the first needle valve 5 to be opened, the gas-liquid mixture enters the gas-liquid separator 9 through the main control gate valve 1, the production gate valve 4, the first needle valve 5, the electromagnetic block valve 6, the first flowmeter 7 and the first three-way valve 8, and pure liquid and pure gas are formed after separation;
when gas is continuously produced, the controller controls the second three-way valve 10 to be fully opened, and the one-way valve 15 is opened; after passing through the second three-way valve 10, one part of the pure gas is conveyed out to a gas collecting station through a one-way valve 15, the other part of the pure gas enters a compressor 13 after being controlled by a needle valve 11 and metered by a flowmeter 12 to be compressed to form high-pressure gas, the high-pressure gas enters a nozzle 165 along an oil pipe opening and a gas inlet 164 and the low-pressure gas after being throttled and depressurized enters a throat pipe 166, the shaft liquid reaches the throat pipe 166 through a liquid inlet channel 168 and a liquid inlet hole 169 to be mixed with the low-pressure gas to form a gas-liquid mixture, and when the gas-liquid mixture is pressurized to the pressure absolute greater than the pressure in the wellhead gas production system by a diffusion pipe 167, the gas-liquid mixture is lifted to the wellhead gas production system; the controller controls the second end of the first three-way valve 8 to be closed, controls the first needle valve 5 to be opened, enables a gas-liquid mixture to enter the gas-liquid separator 9 through the main control gate valve 1, the production gate valve 4, the first needle valve 5, the electromagnetic block valve 6, the first flowmeter 7 and the first three-way valve 8, forms pure liquid and pure gas after separation, and the circulation is carried out so as to realize continuous gas production.
The beneficial effect of this embodiment is: the jet flow diverter is arranged in an oil pipe of the sleeve, and can form a low-pressure area in the throat pipe after throttling and depressurizing the compressed high-pressure gas through the nozzle, so that the shaft liquid and the low-pressure gas can be conveniently mixed, and the mixed gas-liquid mixture is lifted to the ground after being pressurized again in the diffusion pipe; the production pipe column does not need to be lifted out, the gas lift valve or the jet pump is connected, and the grade of the compressor is reduced; in addition, a continuous gas lift system is connected to the wellhead gas production system, when a well is opened, the continuous gas lift system can reversely transmit low-pressure gas in an output pipeline to a compressor, the low-pressure gas is compressed into high-pressure gas by the compressor and then is injected into a sleeve of a shaft, and after the high-pressure gas is pressurized by an injection flow diverter, underground liquid and gas are lifted to the ground; when gas is continuously produced, the gas-liquid mixture is separated into pure liquid and pure gas through a gas-liquid separator, one part of the pure gas is output, the other part of the pure gas is continuously conveyed into a compressor to be compressed and then injected into a sleeve of a shaft, after the pressure of the gas is increased through a jet flow diverter, the liquid and the gas in the well are lifted to the ground, and the circulation is carried out, so that the continuous gas production is realized.
Example 2
The gas production method of the continuous gas lift drainage gas production system based on underground injection drainage and wellhead compression comprises a well opening stage and a continuous gas production stage;
the well opening stage comprises the following steps:
A1. the controller controls the main control gate valve 1, the production gate valve 4, the electromagnetic block valve 6, the first flowmeter 7 and the second casing gate valve 14 to be normally opened, the second end and the third end of the first three-way valve 8 and the first end and the second end of the second three-way valve 10 are opened, and the compressor 13 is controlled to be started; introducing low-pressure gas in the outgoing line into the compressor 13;
A2. the gas is compressed by the compressor 13 and then enters the shaft casing, and enters the jet flow diverter 16 along the pipe hole of the oil pipe and the air inlet 164 to be pressurized, so that the underground gas and liquid are lifted to a wellhead gas production system, and then enter the gas-liquid separator 9 along the first three-way valve 8 to be separated into pure liquid and pure gas;
the steps of the continuous gas production stage are as follows:
A3. the controller controls the second three-way valve 10 to be fully opened, and the one-way valve 15 is opened;
A4. one part of the pure gas separated by the gas-liquid separator 9 is conveyed to an external pipeline through a one-way valve 15, and the other part of the pure gas is used as a gas source of the continuous gas lift and enters a compressor 13;
A5. and sequentially circulating the steps A2 and A4.
The beneficial effect of this embodiment is: under the control action of the controller, low-pressure gas in an output pipeline is used as a gas source, and high-pressure gas is formed after compression and is injected into a gas well which is drowned or is crossed with the bottom of underground gas pressure, so that the gas well can produce gas again; in addition, a part of gas produced by the well is used as a gas source for circularly producing gas, is continuously compressed by a compressor and then is injected into a gas well to be used as the power of gas lift, and the gas is circularly produced in such a way; by the method, the well opening of the drowned gas well can be realized again, and the gas well can realize continuous gas lift gas source supply at the well mouth after the well opening, so that the gas introduced into the gas collecting station by laying a gas return line is not needed, and the investment, management and maintenance cost is saved.
Example 3
As shown in fig. 1, the continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression further comprises a combustion tank 18 connected to the gas-liquid separator 9; the burn pot 18 is used to introduce natural gas into the system for combustion when the system is off gas lift.
The beneficial effect of this embodiment is: the setting of burning jar has guaranteed the security of continuous gas lift drainage gas production system, is convenient for carry out the burning processing with the natural gas in the system when stopping the gas lift, avoids it to leak to the environment in, causes environmental pollution.
Example 4
As shown in fig. 1, the continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression further comprises a sewage tank 19 connected to the gas-liquid separator 9, wherein the sewage tank 19 is used for collecting pure liquid separated by the gas-liquid separator 9.
The beneficial effect of this embodiment is: the sewage tank can store pure liquid separated by the gas-liquid separator, and can measure the gas well liquid production rate in unit time during continuous gas lift.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (7)
1. Continuous gas lift drainage gas recovery system based on spray drainage in pit and well head compression, its characterized in that: comprises a continuous gas lift system with one end connected with a wellhead gas production system and the other end connected with a shaft casing, and an injection flow diverter (16) arranged at the position of a pipe hole in a shaft oil pipe;
the continuous gas lift system comprises a first three-way valve (8) arranged between a wellhead gas production system and a gas gathering station, the third end of the first three-way valve (8) is connected to the inlet end of a gas-liquid separator (9), the outlet end of the gas-liquid separator (9) is connected with the first end of a second three-way valve (10), the second end of the second three-way valve (10) is connected to the inlet end of a compressor (13) sequentially through a second needle valve (11) and a second flowmeter (12), and the outlet end of the compressor (13) is connected into a shaft sleeve through a second sleeve gate valve (14); the third end of the second three-way valve (10) is connected to an external transmission pipeline through a one-way valve (15);
the injection flow diverter (16) comprises a first sealing element (161), a second sealing element (162) and an anchoring part (163), wherein the first sealing element, the second sealing element and the anchoring part are arranged on a body (160) from bottom to top; a plurality of annularly distributed air inlet holes (164) are formed in the body (160) between the first sealing piece (161) and the second sealing piece (162) along the horizontal direction, a nozzle (165), a throat pipe (166) and a diffusion pipe (167) are sequentially arranged at the intersecting position of the air inlet holes (164) upwards, and the diffusion pipe (167) extends to the top of the body (160); liquid inlet channels (168) are formed between the adjacent air inlets (164) along the vertical direction, and the middle upper parts of the liquid inlet channels (168) are communicated with the throat pipe (166) through liquid inlet holes (169);
the low-pressure gas in the output pipeline is compressed into high-pressure gas by a compressor (13), then is injected into the shaft casing, and enters the injection flow diverter (16) along the pipe hole of the oil.
2. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 1, wherein: the wellhead gas production system comprises a main control gate valve (1) and a test gate valve (2) which are arranged on a wellhead gas production tree, wherein the lower side and the upper side of the main control gate valve (1) are connected to a first needle valve (5) through a first sleeve gate valve (3) and a production gate valve (4) respectively, and the first needle valve (5) is connected to an external gas collection station through an electromagnetic block valve (6) and a first flowmeter (7) in sequence.
3. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 2, wherein: the main control gate valve (1) and the test gate valve (2) are connected to the gas production tree through flanges; the device comprises a first sleeve gate valve (3), a production gate valve (4), a first needle valve (5), an electromagnetic block valve (6), a first flow meter (7), a gas-liquid separator (9), a second three-way valve (10), a second needle valve (11), a second flow meter (12), a compressor (13), a second sleeve gate valve (14) and a one-way valve (15) which are connected to a pipeline through flanges respectively.
4. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 3, wherein: the main control gate valve (1), the test gate valve (2), the first sleeve gate valve (3), the production gate valve (4) and the second sleeve gate valve (14) are all fully-open fully-closed valves.
5. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 1, wherein: the device is characterized by further comprising a controller which is connected with the first sleeve gate valve (3), the production gate valve (4), the first needle valve (5), the electromagnetic cut-off valve (6), the first flow meter (7), the gas-liquid separator (9), the second three-way valve (10), the second needle valve (11), the second flow meter (12), the compressor (13), the second sleeve gate valve (14) and the one-way valve (15) respectively and used for controlling the cut-off of the valves.
6. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 5, wherein: the device also comprises a combustion tank (18) connected with the gas-liquid separator (9); the burn pot (18) is used to introduce natural gas into the system for combustion when the system is off gas lift.
7. The continuous gas lift drainage gas production system based on downhole jet drainage and wellhead compression as claimed in claim 6, wherein: and the sewage tank (19) is connected to the gas-liquid separator (9) and is used for collecting the pure liquid separated by the gas-liquid separator (9).
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| CN202022886189.2U CN214091811U (en) | 2020-12-04 | 2020-12-04 | Continuous gas lift drainage gas production system based on underground jet drainage and wellhead compression |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343552A (en) * | 2020-12-04 | 2021-02-09 | 西安众海石油科技有限公司 | Drainage and gas production system and method based on underground jet drainage and wellhead compression |
| CN117905424A (en) * | 2024-03-19 | 2024-04-19 | 山东成林石油工程技术有限公司 | Hollow screw driving ring jet flow drainage system and use method |
-
2020
- 2020-12-04 CN CN202022886189.2U patent/CN214091811U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343552A (en) * | 2020-12-04 | 2021-02-09 | 西安众海石油科技有限公司 | Drainage and gas production system and method based on underground jet drainage and wellhead compression |
| CN112343552B (en) * | 2020-12-04 | 2024-09-06 | 西安众海石油科技有限公司 | Drainage and gas production system and method based on underground jet drainage and wellhead compression |
| CN117905424A (en) * | 2024-03-19 | 2024-04-19 | 山东成林石油工程技术有限公司 | Hollow screw driving ring jet flow drainage system and use method |
| CN117905424B (en) * | 2024-03-19 | 2024-05-17 | 山东成林石油工程技术有限公司 | Hollow screw driving ring jet flow drainage system and use method |
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