Well group type jet pump same-well production, injection, drainage and gas production system

Abstract

The utility model discloses a well group type jet pump same-well production, injection, drainage and gas production system which comprises a gas-liquid mixture outlet manifold, a gas-liquid separator, a power liquid sedimentation system, a ground power system, a power liquid injection manifold, a reinjection liquid manifold, a wellhead gas collection system and a plurality of single-pipe jet pump same-well production and injection systems, the multiple single-pipe jet pump same-well production and injection systems are arranged in parallel and connected with the gas-liquid separator through the gas-liquid mixture outlet manifold. An outlet of the gas-liquid separator is provided with a gas phase outlet and a liquid phase outlet; a gas phase outlet of the gas-liquid separator is connected with a wellhead gas collection system; a liquid phase outlet of the gas-liquid separator is connected with a power liquid sedimentation system, the power liquid sedimentation system is connected with a ground power system, and the ground power system is connected with a plurality of single-pipe jet pump same-well production and injection systems through a power liquid injection manifold and a reinjection liquid manifold respectively; and a liquid phase outlet of the gas-liquid separator is connected with an external conveying pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas exploitation in oil and gas fields, and specifically relates to a well-group type jet pump co-well injection and drainage gas production system. Background Technique

[0002] High-water-content gas reservoirs generally produce liquid, and the liquid production per well is high. During the natural flow period of gas wells, liquid can be carried in the wellbore. As the gas well pressure and production continue to decrease, the liquid-carrying capacity of the gas well itself gradually deteriorates, and liquid accumulates in the wellbore, resulting in reduced production or even water flooding and shutdown. Therefore, it is necessary to drain the liquid to resume production. Among the existing strong drainage technologies, jet pumps have gradually developed into the mainstream process in the mechanical drainage of high-liquid-production gas wells.

[0003] For example, the utility model patent with the application number CN202220707770.X discloses a well-site type jet pump drainage gas production device, which includes a ground power device, a power liquid manifold, a multi-well concentric tube jet pump gas production device, a blowout prevention manifold, a blowout prevention and purification device, a liquid storage device, a separation and metering system, and a gas gathering manifold. The multi-well concentric tube jet pump gas production devices are connected in parallel and are respectively connected to the ground power device through the power liquid manifold. The input end of the liquid storage device is connected to the blowout prevention and purification device, and the output end is connected to the ground power device. This well-site type jet pump drainage gas production device cross-drives the drainage of multiple low-pressure high-production water wells by a set of ground power systems through multiple jet pump wells, making full use of ground equipment resources and minimizing equipment investment costs and production management costs.

[0004] Although this well-site type jet pump drainage gas production device has a reasonable and compact structure, is easy to use, can achieve the purpose of removing liquid accumulation in the wellbore, increasing gas production, realizing the resumption of production of the well group on the same platform, and further improving production efficiency, the above well-site type jet pump drainage gas production device cannot filter and reinject the produced liquid of the well group gas wells, resulting in high transportation and treatment costs of the produced liquid and a high frequency of jet pump core blockage, which affects the exploitation efficiency and needs to be further improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a well-group type jet pump co-well injection and drainage gas production system, aiming to improve the problems that the well-site type jet pump drainage gas production device cannot filter and reinject the produced liquid of the well group gas wells, the transportation and treatment costs of the produced liquid are high, and the frequency of jet pump core blockage is high, which affect the exploitation efficiency.

[0006] The present utility model is realized as follows: A well group type jet pump co-production, injection and drainage gas production system includes a gas-liquid mixture outlet manifold, a gas-liquid separator, a power liquid sedimentation system, a surface power system, a power liquid injection manifold, a reinjection liquid manifold and a wellhead gas gathering system, and further includes a plurality of single-tube jet pump co-production and injection systems. A plurality of the single-tube jet pump co-production and injection systems are arranged in parallel, and the plurality of single-tube jet pump co-production and injection systems are connected to the gas-liquid separator through the gas-liquid mixture outlet manifold; a gas phase outlet and a liquid phase outlet are arranged at the outlet of the gas-liquid separator; the gas phase outlet of the gas-liquid separator is connected to the wellhead gas gathering system; the liquid phase outlet of the gas-liquid separator is connected to the power liquid sedimentation system, the power liquid sedimentation system is connected to the surface power system, and the surface power system is respectively connected to the plurality of single-tube jet pump co-production and injection systems through the power liquid injection manifold and the reinjection liquid manifold; an external transmission pipeline is connected to the liquid phase outlet of the gas-liquid separator.

[0007] Preferably, a plurality of the single-tube jet pump co-production and injection systems are arranged in parallel. Inside the well of the single-tube jet pump co-production and injection system, a tubing string, a tie-back casing and a technical casing are sequentially arranged from the inside to the outside. A downhole jet pump is arranged at the bottom end of the tubing string. A produced liquid reinjection layer is arranged in the middle of the single-tube jet pump co-production and injection system, and a hanging tail pipe is arranged at the bottom; at the wellhead of the single-tube jet pump co-production and injection system, a first four-way joint, a second four-way joint, a first gate valve, a fourth gate valve, a third four-way joint and a seventh gate valve are sequentially installed from bottom to top. An eleventh gate valve, a tenth gate valve, a twelfth gate valve and a thirteenth gate valve are sequentially installed on the first four-way joint from left to right; a fifth gate valve, a second gate valve, a third gate valve and a sixth gate valve are sequentially installed on the second four-way joint from left to right; an eighth gate valve and a ninth gate valve are sequentially installed on the third four-way joint from left to right; both the fifth gate valve and the eighth gate valve are connected to a produced liquid injection pipeline, and a produced gas pressure transmitter is arranged at the valve port. The produced liquid injection pipeline is connected to the gas-liquid mixture outlet manifold; both the sixth gate valve and the ninth gate valve are connected to a power liquid injection pipeline, and a power liquid pressure transmitter is arranged at the valve port; the power liquid injection pipeline is connected to the power liquid injection manifold; the thirteenth gate valve is connected to a reinjection liquid injection pipeline, and a reinjection liquid pressure transmitter is arranged at the valve port. The reinjection liquid injection pipeline is connected to the reinjection liquid manifold.

[0008] Preferably, the gas-liquid mixture outlet manifold includes a gas-liquid mixture outlet branch pipe, a first check valve and a gas-liquid mixture outlet main pipe; the first check valve is installed on the gas-liquid mixture outlet branch pipe. One end of the gas-liquid mixture outlet branch pipe is connected to the produced liquid injection pipeline, and the other end is connected to the gas-liquid mixture outlet main pipe. The gas-liquid mixture outlet main pipe is connected to the gas-liquid separator.

[0009] Preferably, the gas-liquid separator includes a first flat gate valve, a body, a pier, a first liquid level transmitter, a first pressure gauge, a first safety valve, a second flat gate valve, a first drain skid flat gate valve, a first electric drain valve, a second drain skid flat gate valve, a third drain skid flat gate valve, a first liquid-phase flowmeter, a liquid-phase main pipeline, a liquid-phase branch pipeline, a second check valve, and a third flat gate valve; a pier is arranged at the bottom of the body, and a first liquid level transmitter and a first pressure gauge are installed on the side; the gas-phase outlet of the gas-liquid separator is connected to the wellhead gas gathering system through a second flat gate valve; the liquid-phase outlet of the gas-liquid separator is connected with a liquid-phase main pipeline, and a first drain skid flat gate valve, a first electric drain valve, a second drain skid flat gate valve, and a first liquid-phase flowmeter are sequentially arranged on the liquid-phase main pipeline along its flow direction; the third drain skid flat gate valve is arranged in parallel with the first drain skid flat gate valve, the first electric drain valve, and the second drain skid flat gate valve on the liquid-phase main pipeline; the liquid-phase main pipeline is connected with a power liquid sedimentation system; a liquid-phase branch pipeline is further arranged on the liquid-phase main pipeline, a second check valve and a third flat gate valve are sequentially arranged on the liquid-phase branch pipeline along its flow direction, and the liquid-phase branch pipeline is connected with an external transmission pipeline.

[0010] Preferably, the power liquid sedimentation system includes a second electric drain valve, a second liquid level transmitter, a sedimentation tank, a base, a baffle, a water discharge port, a fourth flat gate, a breather valve, a fifth flat gate valve, a first feed water pump, a filter, and a second liquid-phase flowmeter; a baffle is vertically arranged inside the sedimentation tank, a water discharge port is arranged at the bottom of the side surface, a base is arranged at the bottom, and a breather valve is arranged at the top; a plurality of the sedimentation tanks are connected in series through a fourth flat gate; the first sedimentation tank along the flow direction is connected to the liquid-phase main pipeline through a second electric drain valve, and a second liquid level transmitter is installed on one side of the sedimentation tank close to the second electric drain valve; the outlet of the last sedimentation tank along the flow direction is connected with a ground power system, and a fifth flat gate valve, a first feed water pump, a filter, and a second liquid-phase flowmeter are sequentially installed on its pipeline.

[0011] Preferably, the ground power system includes a sixth flat gate valve, a diaphragm pump, a seventh flat gate valve, an eighth flat gate valve, a ninth flat gate valve, a tenth flat gate valve, a piston pump, an eleventh flat gate valve, a liquid phase inlet manifold, a twelfth flat gate valve, a second gas flowmeter, a self-operated pressure regulating valve, a gas generator, a control cabinet, a return pipeline, a third check valve, and a feed water pump; a sixth flat gate valve is installed at the inlet of the diaphragm pump, a plurality of piston pumps are arranged in sequence, and an eleventh flat gate valve is installed at the inlet of each of the plurality of piston pumps. One end of the liquid phase inlet manifold is connected to the outlet pipeline of the power fluid sedimentation system, and the other end is simultaneously connected to a plurality of eleventh flat gate valves and the sixth flat gate valve; a seventh flat gate valve is provided at the outlet of the diaphragm pump, and the seventh flat gate valve is connected to a reinjection liquid manifold; a tenth flat gate valve is provided at the outlet of each of the plurality of piston pumps, and the plurality of tenth flat gate valves are arranged in parallel, and the ends of the seventh flat gate valve and the tenth flat gate valve away from the diaphragm pump and the piston pump are connected in series through a pipeline; an eighth flat gate valve, a ninth flat gate valve, and a power fluid injection manifold are sequentially arranged on the series pipeline between the seventh flat gate valve and the tenth flat gate valve; one end of the control cabinet is connected to the piston pump, and the other end is connected to a gas generator; the gas generator is connected to an export pipeline, and a second gas flowmeter and a twelfth flat gate valve are sequentially arranged on the connecting pipeline; a return pipeline is also connected to the piston pump, the return pipeline is connected to the first sedimentation tank along the flow direction, and a third check valve and a feed water pump are sequentially arranged on the return pipeline along its flow direction.

[0012] Preferably, the power fluid injection manifold includes a third liquid flowmeter, a power fluid injection main pipeline, a power fluid injection branch pipeline, and a fourth check valve; a fourth check valve is provided on the power fluid injection branch pipeline, one end of the power fluid injection branch pipeline is connected to the power fluid injection pipeline, the other end is connected to the power fluid injection main pipeline, and the power fluid injection main pipeline is connected to the outlet of the piston pump; the reinjection liquid manifold includes a reinjection liquid main pipeline, a reinjection liquid branch pipeline, and a fifth check valve, a fifth check valve is provided on the reinjection liquid branch pipeline, one end of the reinjection liquid branch pipeline is connected to the reinjection liquid injection pipeline, and the other end is connected to the outlet of the diaphragm pump.

[0013] Preferably, the wellhead gas gathering system includes a gas gathering pipeline, a first emergency cut-off valve, a first gas flowmeter, a sixth check valve, and a thirteenth flat gate valve; one end of the gas gathering pipeline is connected to the gas phase outlet of the gas-liquid separator, and the other end is connected to the export pipeline. A first emergency cut-off valve, a first gas flowmeter, a sixth check valve, and a thirteenth flat gate valve are sequentially arranged on the gas gathering pipeline along its flow direction.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. The utility model can filter impurities in the power fluid through the power fluid sedimentation system by setting up a gas-liquid mixture outlet manifold, a gas-liquid separator, a power fluid sedimentation system, a surface power system, a power fluid injection manifold and a reinjection fluid manifold, reduce the high frequency of jet pump core blockage, and recycle the power fluid through the surface power system, the power fluid injection manifold and the reinjection fluid manifold, without hauling and treating the produced fluid, thus reducing costs and improving the production efficiency.

[0016] 2. By setting up a first electric drain valve, a second electric drain valve, a power fluid pressure transmitter, a reinjection fluid pressure transmitter, a produced gas pressure transmitter, a first liquid level transmitter, a second liquid level transmitter and a control cabinet, the utility model can record parameters such as the pressure, flow rate and bottom hole pressure of the power fluid and the reinjection fluid, with high automation degree and convenient operation, significantly reducing the labor intensity, and at the same time providing a basis for optimizing the system parameters of the jet pump in the well group.

[0017] 3. By setting up a check valve, the utility model prevents the interflow of the produced gas-liquid, power fluid and reinjection fluid in each single well of the well group, and improves the jet and reinjection effects of each single well.

[0018] 4. By setting up an annular space formed by the technical casing and the backinserted casing to form a produced fluid reinjection space, the utility model realizes the complete reinjection of the produced fluid of the gas well in the high-production fluid well group, saves the hauling and treatment costs of the produced fluid, and reduces the environmental protection risk. Brief Description of the Drawings

[0019] Figure 1 is a schematic connection structure diagram of the utility model;

[0020] Figure 2 is the utility model Figure 1 is a schematic structure diagram at position A in the utility model.

[0021] In the figure: 1. Single-tube jet pump co-production and injection system in the same well; 101. First gate valve; 102. Second gate valve; 103. Third gate valve; 104. Fourth gate valve; 105. Fifth gate valve; 106. Sixth gate valve; 107. Seventh gate valve; 108. Eighth gate valve; 109. Ninth gate valve; 110. Tenth gate valve; 111. Eleventh gate valve; 112. Twelfth gate valve; 113. Thirteenth gate valve; 114. Technical casing; 115. Produced fluid reinjection layer; 116. Tie-back casing; 117. Tubing; 118. Downhole jet pump; 119. Suspended tail pipe; 120. Power fluid pressure transmitter; 121. Reinjection fluid pressure transmitter; 122. Produced gas pressure transmitter; 123. Power fluid injection pipeline; 124. Produced fluid injection pipeline; 125. Reinjection fluid injection pipeline; 126. First four-way joint; 127. Second four-way joint; 128. Third four-way joint; 2. Gas-liquid mixture outlet manifold; 201. Gas-liquid mixture outlet branch pipe; 202. First check valve; 203. Gas-liquid mixture outlet main pipe; 3. Gas-liquid separator; 301. First flat gate valve; 302. Body; 303. Pier; 304. First liquid level transmitter; 305. First pressure gauge; 306. First safety valve; 307. Second flat gate valve; 308. First drainage skid flat gate valve; 309. First electric drainage valve; 310. Second drainage skid flat gate valve; 311. Third drainage skid flat gate valve; 312. First liquid phase flowmeter; 313. Liquid phase main pipeline; 314. Liquid phase branch pipeline; 315. Second check valve; 316. Third flat gate valve; 4. Power fluid sedimentation system; 401. Second electric drainage valve; 402. Second liquid level transmitter; 403. Sedimentation tank; 404. Base; 405. Baffle; 406. Drainage port; 407. Fourth flat gate valve; 408. Breather valve; 409. Fifth flat gate valve; 410. First feed water pump; 411. Filter; 412. Second liquid phase flowmeter; 413. Fifth flat gate valve; 5. Surface power system; 501. Sixth flat gate valve; 502. Diaphragm pump; 503. Seventh flat gate valve; 504. Eighth flat gate valve; 505. Ninth flat gate valve; 506. Tenth flat gate valve; 507. Plunger pump; 508. Eleventh flat gate valve; 509. Liquid phase inlet manifold; 510. Twelfth flat gate valve; 511. Second gas phase flowmeter; 512. Self-operated pressure regulating valve; 513. Gas generator; 514. Control cabinet; 515. Return pipeline; 516. Third check valve; 517. Feed water pump; 6. Power fluid injection manifold; 601. Third liquid phase flowmeter; 602. Power fluid injection main pipeline; 603. Power fluid injection branch pipeline; 604. Fourth check valve; 7. Reinjection fluid manifold; 701. Reinjection fluid main pipeline; 702. Reinjection fluid branch pipeline; 703. Fifth check valve; 8. Wellhead gas gathering system; 801. Gas gathering pipeline; 802. First emergency shut-off valve; 803. First gas phase flowmeter;804. The sixth one-way valve; 805. The thirteenth flat gate valve. Detailed implementation manners

[0022] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] The following is further described in conjunction with the accompanying drawings and specific embodiments:

[0024] Embodiment 1

[0025] As Figure 1 And Figure 2As shown in the figure, a well group jet pump co-production, injection and drainage gas production system includes a gas-liquid mixture outlet manifold 2, a gas-liquid separator 3, a power liquid sedimentation system 4, a surface power system 5, a power liquid injection manifold 6, a reinjection liquid manifold 7 and a wellhead gas gathering system 8. It also includes multiple single-tube jet pump co-production, injection and production systems 1. Multiple single-tube jet pump co-production, injection and production systems 1 are arranged in parallel. Multiple single-tube jet pump co-production, injection and production systems 1 are connected to the gas-liquid separator 3 through the gas-liquid mixture outlet manifold 2. The gas-liquid mixture outlet manifold 2 is a steel pipeline with a pressure resistance of 35 MPa; the outlet of the gas-liquid separator 3 is provided with a gas phase outlet and a liquid phase outlet; the gas phase outlet of the gas-liquid separator 3 is connected to the wellhead gas gathering system 8; the liquid phase outlet of the gas-liquid separator 3 is connected to the power liquid sedimentation system 4, the power liquid sedimentation system 4 is connected to the surface power system 5, and the surface power system 5 is connected to multiple single-tube jet pump co-production, injection and production systems 1 through the power liquid injection manifold 6 and the reinjection liquid manifold 7 respectively; the liquid phase outlet of the gas-liquid separator 3 is connected to an external transportation pipeline. Multiple single-tube jet pump co-production, injection and production systems 1 are arranged in parallel. Inside the well of the single-tube jet pump co-production, injection and production system 1, there are an oil pipe 117, a tie-back casing 116 and a technical casing 114 arranged from the inside to the outside in sequence. The bottom end of the oil pipe 117 is provided with a downhole jet pump 118. In the middle of the single-tube jet pump co-production, injection and production system 1, there is a produced liquid reinjection layer 115. The reinjection layer is preferably a reservoir in the mudstone of the unconformity surface between the Liujiawan Formation and the Shiqianfeng Formation with strong brittleness, developed bedding fissures and frequent leakage during drilling; at the bottom, there is a hanging liner 119; the annular space formed by the Φ177.8 mm technical casing and the Φ114.3 mm back-inserted casing is used as the produced liquid reinjection space to realize the complete reinjection of the produced liquid of the high-production liquid well group gas wells, saving the transportation and treatment costs of the produced liquid and reducing the environmental protection risk; at the wellhead of the single-tube jet pump co-production, injection and production system 1, a first four-way valve 126, a second four-way valve 127, a first gate valve 101, a fourth gate valve 104, a third four-way valve 128 and a seventh gate valve 107 are installed from bottom to top in sequence. On the first four-way valve 126, an eleventh gate valve 111, a tenth gate valve 110, a twelfth gate valve 112 and a thirteenth gate valve 113 are installed from left to right in sequence; on the second four-way valve 127, a fifth gate valve 105, a second gate valve 102, a third gate valve 103 and a sixth gate valve 106 are installed from left to right in sequence; on the third four-way valve 128, an eighth gate valve 108 and a ninth gate valve 109 are installed from left to right in sequence; both the fifth gate valve 105 and the eighth gate valve 108 are connected to a produced liquid injection pipeline 124, and a produced gas pressure transmitter 122 is arranged at the valve port. The produced liquid injection pipeline 124 is connected to the gas-liquid mixture outlet manifold 2; both the sixth gate valve 106 and the ninth gate valve 109 are connected to a power liquid injection pipeline 123, and a power liquid pressure transmitter 120 is arranged at the valve port; the power liquid injection pipeline 123 is connected to the power liquid injection manifold 6; the thirteenth gate valve 113 is connected to a reinjection liquid injection pipeline 125, and a reinjection liquid pressure transmitter 121 is arranged at the valve port. The reinjection liquid injection pipeline 125 is connected to the reinjection liquid manifold 7.

[0026] As Figure 1 shown, the gas-liquid mixture outlet manifold 2 includes a gas-liquid mixture outlet branch pipe 201, a first check valve 202, and a gas-liquid mixture outlet main pipe 203; a first check valve 202 is installed on the gas-liquid mixture outlet branch pipe 201. One end of the gas-liquid mixture outlet branch pipe 201 is connected to the produced liquid injection pipeline 124, and the other end is connected to the gas-liquid mixture outlet main pipe 203. The gas-liquid mixture outlet main pipe 203 is connected to a gas-liquid separator 3. The gas-liquid separator 3 includes a first flat gate valve 301, a body 302, a pier 303, a first liquid level transmitter 304, a first pressure gauge 305, a first safety valve 306, a second flat gate valve 307, a first drainage skid flat gate valve 308, a first electric drainage valve 309, a second drainage skid flat gate valve 310, a third drainage skid flat gate valve 311, a first liquid phase flowmeter 312, a liquid phase main pipeline 313, a liquid phase branch pipeline 314, a second check valve 315, and a third flat gate valve 316; a pier 303 is provided at the bottom of the body 302, and a first liquid level transmitter 304 and a first pressure gauge 305 are installed on the side; the gas phase outlet of the gas-liquid separator 3 is connected to the wellhead gas gathering system 8 through the second flat gate valve 307; the liquid phase outlet of the gas-liquid separator 3 is connected to a liquid phase main pipeline 313. Along the flow direction of the liquid phase main pipeline 313, a first drainage skid flat gate valve 308, a first electric drainage valve 309, a second drainage skid flat gate valve 310, and a first liquid phase flowmeter 312 are arranged in sequence. The third drainage skid flat gate valve 311 is arranged in parallel with the first drainage skid flat gate valve 308, the first electric drainage valve 309, and the second drainage skid flat gate valve 310 on the liquid phase main pipeline 313; the liquid phase main pipeline 313 is connected to a power liquid settling system 4; a liquid phase branch pipeline 314 is further provided on the liquid phase main pipeline 313. Along the flow direction of the liquid phase branch pipeline 314, a second check valve 315 and a third flat gate valve 316 are arranged in sequence, and it is connected to an external transmission pipeline.

[0027] As Figure 1 and Figure 2As shown in the figure, the power liquid sedimentation system 4 includes a second electric drain valve 401, a second liquid level transmitter 402, a sedimentation tank 403, a base 404, a baffle 405, a water drain port 406, a fourth flat gate valve 407, a breather valve 408, a fifth flat gate valve 409, a first feed water pump 410, a filter 411, and a second liquid phase flowmeter 412; a baffle 405 is vertically arranged inside the sedimentation tank 403, a water drain port 406 is arranged at the bottom of the side, a base 404 is arranged at the bottom, and a breather valve 408 is arranged at the top; multiple sedimentation tanks 403 are connected in series through a fourth flat gate valve 407; the volume of the sedimentation tank 403 is 50 cubic meters, and the length, width, and height dimensions are 8.5m×2.6m×2.6m. The water drain port 406 is arranged at a position 1m high from the sedimentation tank 403, and two sedimentation tanks are horizontally connected at 1.3m; along the flow direction, the first sedimentation tank 403 is connected to the liquid phase main pipeline 313 through a second electric drain valve 401, and a second liquid level transmitter 402 is installed on one side of the sedimentation tank 403 close to the second electric drain valve 401; the outlet of the last sedimentation tank 403 along the flow direction is connected to the ground power system 5, and a fifth flat gate valve 409, a first feed water pump 410, a filter 411, and a second liquid phase flowmeter 412 are successively installed on its pipeline; the filter 411 is a basket filter with a pressure resistance of 2.5MPa, and an 80-mesh filter screen is installed inside.The surface power system 5 includes a sixth flat gate valve 501, a diaphragm pump 502, a seventh flat gate valve 503, an eighth flat gate valve 504, a ninth flat gate valve 505, a tenth flat gate valve 506, a piston pump 507, an eleventh flat gate valve 508, a liquid-phase inlet manifold 509, a twelfth flat gate valve 510, a second gas-phase flowmeter 511, a self-operated pressure regulating valve 512, a gas generator 513, a control cabinet 514, a return pipeline 515, a third check valve 516, and a feed water pump 517; a sixth flat gate valve 501 is installed at the inlet of the diaphragm pump 502, multiple piston pumps 507 are arranged in sequence, and an eleventh flat gate valve 508 is installed at the inlet of each of the multiple piston pumps 507. One end of the liquid-phase inlet manifold 509 is connected to the outlet pipeline of the power liquid sedimentation system 4, and the other end is simultaneously connected to multiple eleventh flat gate valves 508 and the sixth flat gate valve 501; a seventh flat gate valve 503 is arranged at the outlet of the diaphragm pump 502, and the seventh flat gate valve 503 is connected to a reinjection liquid manifold 7; a tenth flat gate valve 506 is arranged at the outlet of each of the multiple piston pumps 507, the multiple tenth flat gate valves 506 are arranged in parallel, and the ends of the seventh flat gate valve 503 and the tenth flat gate valves 506 far from the diaphragm pump 502 and the piston pumps 507 are connected in series through a pipeline; an eighth flat gate valve 504, a ninth flat gate valve 505, and a power liquid injection manifold 6 are sequentially arranged on the series pipeline between the seventh flat gate valve 503 and the tenth flat gate valves 506; one end of the control cabinet 514 is connected to the piston pump 507, and the other end is connected to the gas generator 513; the gas generator 513 is connected to an export pipeline, and a self-operated pressure regulating valve 512, a second gas-phase flowmeter 511, and a twelfth flat gate valve 510 are sequentially arranged on the connecting pipeline; a return pipeline 515 is also connected to the piston pump 507, the return pipeline 515 is connected to the first sedimentation tank 403 along the flow direction, and a third check valve 516 and a feed water pump 517 are sequentially arranged on the return pipeline 515 along its flow direction. The power liquid injection manifold 6 includes a third liquid-phase flowmeter 601, a power liquid injection main pipeline 602, a power liquid injection branch pipeline 603, and a fourth check valve 604; a fourth check valve 604 is arranged on the power liquid injection branch pipeline 603, one end of the power liquid injection branch pipeline 603 is connected to the power liquid injection pipeline 123, the other end is connected to the power liquid injection main pipeline 602, and the power liquid injection main pipeline 602 is connected to the outlet of the piston pump 507; the reinjection liquid manifold 7 includes a reinjection liquid main pipeline 701, a reinjection liquid branch pipeline 702, and a fifth check valve 703, a fifth check valve 703 is arranged on the reinjection liquid branch pipeline 702, one end of the reinjection liquid branch pipeline 702 is connected to the reinjection liquid injection pipeline 125, and the other end is connected to the outlet of the diaphragm pump 502.The wellhead gas gathering system 8 includes a gas gathering pipeline 801, a first emergency shut-off valve 802, a first gas flowmeter 803, a sixth check valve 804, and a thirteenth flat gate valve 805; one end of the gas gathering pipeline 801 is connected to the gas phase outlet of the gas-liquid separator 3, and the other end is connected to the export pipeline. Along the flow direction of the gas gathering pipeline 801, a first emergency shut-off valve 802, a first gas flowmeter 803, a sixth check valve 804, and a thirteenth flat gate valve 805 are sequentially arranged; the ground power system enables a part of the produced liquid of the gas wells in the well group to be used as power liquid to ensure the jetting effect of the jet pump, and the other part of the produced liquid is injected into the reinjection layer through the annular space between the tie-back casing and the technical casing, ensuring the continuous and stable production of multiple high-liquid-producing gas wells in the well group.

[0028] Embodiment 2

[0029] Such as Figure 1 And Figure 2As shown in the figure, a well group jet pump co-production, injection and drainage gas production system includes a gas-liquid mixture outlet manifold 2, a gas-liquid separator 3, a power liquid sedimentation system 4, a surface power system 5, a power liquid injection manifold 6, a reinjection liquid manifold 7 and a wellhead gas gathering system 8. It also includes multiple single-tube jet pump co-production, injection and production systems 1. A plurality of single-tube jet pump co-production, injection and production systems 1 are arranged in parallel. The multiple single-tube jet pump co-production, injection and production systems 1 are connected to the gas-liquid separator 3 through the gas-liquid mixture outlet manifold 2. The outlet of the gas-liquid separator 3 is provided with a gas phase outlet and a liquid phase outlet. The gas phase outlet of the gas-liquid separator 3 is connected to the wellhead gas gathering system 8. The liquid phase outlet of the gas-liquid separator 3 is connected to the power liquid sedimentation system 4. The power liquid sedimentation system 4 is connected to the surface power system 5. The surface power system 5 is connected to the multiple single-tube jet pump co-production, injection and production systems 1 through the power liquid injection manifold 6 and the reinjection liquid manifold 7 respectively. The liquid phase outlet of the gas-liquid separator 3 is connected with an external transmission pipeline. The multiple single-tube jet pump co-production, injection and production systems 1 are arranged in parallel. Inside the well of the single-tube jet pump co-production, injection and production system 1, a tubing 117, a tie-back casing 116 and a technical casing 114 are arranged in sequence from the inside to the outside. The bottom end of the tubing 117 is provided with a downhole jet pump 118. The middle part of the single-tube jet pump co-production, injection and production system 1 is provided with a produced liquid reinjection layer 115, and the bottom is provided with a hanging tail pipe 119. At the wellhead of the single-tube jet pump co-production, injection and production system 1, a first four-way valve 126, a second four-way valve 127, a first gate valve 101, a fourth gate valve 104, a third four-way valve 128 and a seventh gate valve 107 are installed in sequence from bottom to top. A tenth gate valve 110, an eleventh gate valve 111, a twelfth gate valve 112 and a thirteenth gate valve 113 are installed on the first four-way valve 126 from left to right in sequence. A fifth gate valve 105, a second gate valve 102, a third gate valve 103 and a sixth gate valve 106 are installed on the second four-way valve 127 from left to right in sequence. An eighth gate valve 108 and a ninth gate valve 109 are installed on the third four-way valve 128 from left to right in sequence. Both the fifth gate valve 105 and the eighth gate valve 108 are connected with a produced liquid injection pipeline 124, and a produced gas pressure transmitter 122 is arranged at the valve port. The produced liquid injection pipeline 124 is connected to the gas-liquid mixture outlet manifold 2. Both the sixth gate valve 106 and the ninth gate valve 109 are connected with a power liquid injection pipeline 123, and a power liquid pressure transmitter 120 is arranged at the valve port. The power liquid injection pipeline 123 is connected to the power liquid injection manifold 6. The thirteenth gate valve 113 is connected with a reinjection liquid injection pipeline 125, and a reinjection liquid pressure transmitter 121 is arranged at the valve port. The reinjection liquid injection pipeline 125 is connected to the reinjection liquid manifold 7.

[0030] As Figure 1As shown in the figure, the gas-liquid mixture outlet manifold 2 includes a gas-liquid mixture outlet branch pipe 201, a first check valve 202, and a gas-liquid mixture outlet main pipe 203. A first check valve 202 is installed on the gas-liquid mixture outlet branch pipe 201. One end of the gas-liquid mixture outlet branch pipe 201 is connected to the produced liquid injection pipeline 124, and the other end is connected to the gas-liquid mixture outlet main pipe 203. The gas-liquid mixture outlet main pipe 203 is connected to a gas-liquid separator 3. The gas-liquid separator 3 includes a first flat gate valve 301, a body 302, a pier 303, a first liquid level transmitter 304, a first pressure gauge 305, a first safety valve 306, a second flat gate valve 307, a first drainage skid flat gate valve 308, a first electric drainage valve 309, a second drainage skid flat gate valve 310, a third drainage skid flat gate valve 311, a first liquid-phase flowmeter 312, a liquid-phase main pipeline 313, a liquid-phase branch pipeline 314, a second check valve 315, and a third flat gate valve 316. A pier 303 is provided at the bottom of the body 302, and a first liquid level transmitter 304 and a first pressure gauge 305 are installed on the side. The gas-phase outlet of the gas-liquid separator 3 is connected to the wellhead gas gathering system 8 through the second flat gate valve 307. The liquid-phase outlet of the gas-liquid separator 3 is connected to a liquid-phase main pipeline 313. Along the flow direction of the liquid-phase main pipeline 313, a first drainage skid flat gate valve 308, a first electric drainage valve 309, a second drainage skid flat gate valve 310, and a first liquid-phase flowmeter 312 are arranged in sequence. The third drainage skid flat gate valve 311 is arranged in parallel with the first drainage skid flat gate valve 308, the first electric drainage valve 309, and the second drainage skid flat gate valve 310 on the liquid-phase main pipeline 313. The liquid-phase main pipeline 313 is connected to a power liquid settling system 4. A liquid-phase branch pipeline 314 is also provided on the liquid-phase main pipeline 313. Along the flow direction of the liquid-phase branch pipeline 314, a second check valve 315 and a third flat gate valve 316 are arranged in sequence, and it is connected to the export pipeline.

[0031] As Figure 1 and Figure 2As shown, the power fluid sedimentation system 4 includes a second electric drain valve 401, a second liquid level transmitter 402, a sedimentation tank 403, a base 404, a baffle 405, a water discharge port 406, a fourth flat gate valve 407, a breather valve 408, a fifth flat gate valve 409, a first feed water pump 410, a filter 411, and a second liquid phase flowmeter 412; a baffle 405 is vertically arranged inside the sedimentation tank 403, a water discharge port 406 is arranged at the bottom on the side, a base 404 is arranged at the bottom, and a breather valve 408 is arranged at the top; multiple sedimentation tanks 403 are connected in series through a fourth flat gate valve 407; the first sedimentation tank 403 along the flow direction is connected to the liquid phase main pipeline 313 through a second electric drain valve 401, and a second liquid level transmitter 402 is installed on one side of the sedimentation tank 403 close to the second electric drain valve 401; the outlet of the last sedimentation tank 403 along the flow direction is connected to a ground power system 5, and a fifth flat gate valve 409, a first feed water pump 410, a filter 411, and a second liquid phase flowmeter 412 are sequentially installed on its pipeline. The ground power system 5 includes a sixth flat gate valve 501, a diaphragm pump 502, a seventh flat gate valve 503, an eighth flat gate valve 504, a ninth flat gate valve 505, a tenth flat gate valve 506, a plunger pump 507, an eleventh flat gate valve 508, a liquid phase inlet manifold 509, a twelfth flat gate valve 510, a second gas phase flowmeter 511, a self-operated pressure regulating valve 512, a gas generator 513, a control cabinet 514, a return pipeline 515, a third check valve 516, and a feed water pump 517; a sixth flat gate valve 501 is installed at the inlet of the diaphragm pump 502, multiple plunger pumps 507 are arranged in sequence, an eleventh flat gate valve 508 is installed at the inlet of each of the multiple plunger pumps 507, one end of the liquid phase inlet manifold 509 is connected to the outlet pipeline of the power fluid sedimentation system 4, and the other end is simultaneously connected to multiple eleventh flat gate valves 508 and the sixth flat gate valve 501; a seventh flat gate valve 503 is arranged at the outlet of the diaphragm pump 502, and the seventh flat gate valve 503 is connected to a reinjection liquid manifold 7; a tenth flat gate valve 506 is arranged at the outlet of each of the multiple plunger pumps 507, the multiple tenth flat gate valves 506 are arranged in parallel, and one end of the seventh flat gate valve 503 and the tenth flat gate valve 506 far from the diaphragm pump 502 and the plunger pump 507 are connected in series through a pipeline; an eighth flat gate valve 504, a ninth flat gate valve 505, and a power fluid injection manifold 6 are sequentially arranged on the series pipeline between the seventh flat gate valve 503 and the tenth flat gate valve 506; one end of the control cabinet 514 is connected to the plunger pump 507, and the other end is connected to the gas generator 513; the gas generator 513 is connected to an export pipeline, and a self-operated pressure regulating valve 512, a second gas phase flowmeter 511, and a twelfth flat gate valve 510 are sequentially arranged on the connecting pipeline; a return pipeline 515 is also connected to the plunger pump 507, the return pipeline 515 is connected to the first sedimentation tank 403 along the flow direction, and a third check valve 516 and a feed water pump 517 are sequentially arranged along its flow direction.The power fluid injection manifold 6 includes a third liquid-phase flowmeter 601, a power fluid injection main pipeline 602, a power fluid injection branch pipeline 603, and a fourth check valve 604; a fourth check valve 604 is provided on the power fluid injection branch pipeline 603. One end of the power fluid injection branch pipeline 603 is connected to the power fluid injection pipeline 123, and the other end is connected to the power fluid injection main pipeline 602. The power fluid injection main pipeline 602 is connected to the outlet of the plunger pump 507. The reinjection fluid manifold 7 includes a reinjection fluid main pipeline 701, a reinjection fluid branch pipeline 702, and a fifth check valve 703; a fifth check valve 703 is provided on the reinjection fluid branch pipeline 702. One end of the reinjection fluid branch pipeline 702 is connected to the reinjection fluid injection pipeline 125, and the other end is connected to the outlet of the diaphragm pump 502. The wellhead gas gathering system 8 includes a gas gathering pipeline 801, a first emergency cut-off valve 802, a first gas-phase flowmeter 803, a sixth check valve 804, and a thirteenth flat gate valve 805; one end of the gas gathering pipeline 801 is connected to the gas-phase outlet of the gas-liquid separator 3, and the other end is connected to the export pipeline. Along the flow direction of the gas gathering pipeline 801, a first emergency cut-off valve 802, a first gas-phase flowmeter 803, a sixth check valve 804, and a thirteenth flat gate valve 805 are sequentially arranged.

[0032] Working principle of the utility model: When liquid accumulation and waterlogging occur in the wellbores of individual wells in a high-yield liquid well group, the operator first sequentially opens the No. 2 gate valve 102, No. 5 gate valve 105, first flat gate valve 301, second flat gate valve 307, first emergency cut-off valve 802, first gas-phase flowmeter 803, sixth check valve 804, thirteenth flat gate valve 805, twelfth flat gate valve 510, second gas-phase flowmeter 511, self-operated pressure regulating valve 512, and gas generator 513 in the single-tube jet pump co-production and injection system 1 of each individual well in the high-yield liquid well group to ensure smooth gas-phase pipeline flow and generator gas supply pipeline flow for each individual well in the high-yield liquid well group; secondly, sequentially open the first drainage skid flat gate valve 308, first electric drainage valve 309, second drainage skid flat gate valve 310, second electric drainage valve 401, fourth flat gate valve 407, fifth flat gate valve 413, sixth flat gate valve 501, seventh flat gate valve 503, No. 13 gate valve, and No. 12 gate valve to enable a part of the produced fluid of each individual well in the high-yield liquid well group to be reinjected into the formation; finally, sequentially open the first drainage skid flat gate valve 308, first electric drainage valve 309, second drainage skid flat gate valve 310, second electric drainage valve 401, fourth flat gate valve 407, fifth flat gate valve 413, eleventh flat gate valve 508, tenth flat gate valve 506, second liquid-phase flowmeter 601, power fluid injection pipeline 123, and No. 9 gate valve 109 to enable another part of the produced fluid of each individual well in the high-yield liquid well group to be used as power fluid to ensure the jetting effect of the jet pump, ensuring the restart and continuous and stable production of each individual well in the high-yield liquid well group; finally, after both the gas-liquid two-phase processes are opened, start the control cabinet 514 of the diaphragm pump 502 and the piston pump 507, so that a part of the produced fluid is used as power fluid to ensure the jetting effect of the jet pump, ensuring the restart and continuous and stable production of each individual well in the high-yield liquid well group, and another part of the produced fluid enters the annular space between the tie-back casing 116 and the technical casing 114 through the surface power system 5 and is injected into the reinjection layer, thereby realizing the restart, long-term stable production, and clean-benefit exploitation of each individual well in the high-yield liquid well group.

[0033] In summary, the utility model can filter impurities in the power fluid through the power fluid sedimentation system 4 by setting the gas-liquid mixture outlet manifold 2, the gas-liquid separator 3, the power fluid sedimentation system 4, the surface power system 5, the power fluid injection manifold 6 and the reinjection fluid manifold 7, reducing the high frequency of jet pump core blockage. Through the surface power system 5, the power fluid injection manifold 6 and the reinjection fluid manifold 7, the power fluid can be recycled, eliminating the need for hauling and treating the produced fluid, thus reducing costs and improving the production efficiency. By setting the first electric drain valve 309, the second electric drain valve 401, the power fluid pressure transmitter 120, the reinjection fluid pressure transmitter 121, the produced gas pressure transmitter 122, the first liquid level transmitter 304, the second liquid level transmitter 402 and the control cabinet 514, parameters such as the pressure, flow rate and bottom hole pressure of the power fluid and the reinjection fluid can be recorded in real time, with high automation and convenient operation, significantly reducing the labor intensity and providing a basis for optimizing the system parameters of the jet pump in the well group. By setting the check valve, the mutual leakage of the produced gas-liquid, power fluid and reinjection fluid in each single well of the well group is prevented, improving the jetting and reinjection effects of each single well. By forming a produced fluid reinjection space in the annular space between the technical casing and the back-inserted casing, complete reinjection of the gas well produced fluid in the high-production fluid well group is achieved, saving the costs of hauling and treating the produced fluid and reducing the environmental protection risk.

[0034] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A well group type jet pump same well production and injection drainage gas production system, comprising a gas-liquid mixture outlet manifold (2), a gas-liquid separator (3), a power liquid sedimentation system (4), a ground power system (5), a power liquid injection manifold (6), a reinjection liquid manifold (7) and a wellhead gas collection system (8), characterized in that: It also includes a plurality of single-tube jet pumps in the same well production and injection systems (1), wherein a plurality of the single-tube jet pumps in the same well production and injection systems (1) are arranged in parallel, and the plurality of the single-tube jet pumps in the same well production and injection systems (1) are connected to a gas-liquid separator (3) via a gas-liquid mixture outlet manifold (2); the outlet of the gas-liquid separator (3) is provided with a gas phase outlet and a liquid phase outlet; the gas phase outlet of the gas-liquid separator (3) is connected to a wellhead gas collection system (8); the liquid phase outlet of the gas-liquid separator (3) is connected to a power liquid sedimentation system (4), and the power liquid sedimentation system (4) is connected to a ground power system (5), and the ground power system (5) is connected to the plurality of single-tube jet pumps in the same well production and injection systems (1) via a power liquid injection manifold (6) and a reinjection liquid manifold (7); the liquid phase outlet of the gas-liquid separator (3) is connected to an external transmission pipeline.

2. A well group type jet pump same well production and injection drainage gas production system according to claim 1, characterized in that: A plurality of the single-tube jet pump same-well production and injection systems (1) are arranged in parallel, and a well of the single-tube jet pump same-well production and injection system (1) is provided with an oil pipe (117), a tie-back casing (116) and a technical casing (114) in sequence from the inside to the outside, a downhole jet pump (118) is provided at the bottom of the oil pipe (117), a produced fluid reinjection layer (115) is provided in the middle of the single-tube jet pump same-well production and injection system (1), and a hanging tail pipe (119) is provided at the bottom; the single-tube jet pump same-well production and injection system ( 1) is installed at the wellhead of the wellbore from bottom to top in sequence, and a No. 1 four-way valve (126), a No. 2 four-way valve (127), a No. 1 gate valve (101), a No. 4 gate valve (104), a No. 3 four-way valve (128), and a No. 7 gate valve (107); the No. 1 four-way valve (126) is installed with a No. 11 gate valve (111), a No. 10 gate valve (110), a No. 12 gate valve (112), and a No. 13 gate valve (113) in sequence from left to right; the No. 2 four-way valve (127) is installed with a No. 5 gate valve in sequence from left to right (105), No. 2 gate valve (102), No. 3 gate valve (103) and No. 6 gate valve (106); the No. 3 four-way valve (128) is installed with No. 8 gate valve (108) and No. 9 gate valve (109) in sequence from left to right; the No. 5 gate valve (105) and No. 8 gate valve (108) are both connected to a produced liquid injection pipeline (124), and a produced gas pressure transmitter (122) is provided at the valve port; the produced liquid injection pipeline (124) is connected to a gas-liquid mixture outlet manifold (2); the No. 6 gate valve (106) and the No. 9 gate valve (109) are both connected to a power fluid injection pipeline (123), and a power fluid pressure transmitter (120) is provided at the valve port; the power fluid injection pipeline (123) is connected to a power fluid injection manifold (6); the No. 13 gate valve (113) is connected to a reinjection fluid injection pipeline (125), and a reinjection fluid pressure transmitter (121) is provided at the valve port, and the reinjection fluid injection pipeline (125) is connected to a reinjection fluid manifold (7).

3. A well group type jet pump same well production and injection drainage and gas production system according to claim 2, characterized in that: The gas-liquid mixture outlet manifold (2) comprises a gas-liquid mixture outlet branch pipe (201), a first non-flow valve (202) and a gas-liquid mixture outlet main pipe (203); the gas-liquid mixture outlet branch pipe (201) is provided with the first non-flow valve (202); one end of the gas-liquid mixture outlet branch pipe (201) is connected to the output liquid injection pipeline (124), and the other end is connected to the gas-liquid mixture outlet main pipe (203); the gas-liquid mixture outlet main pipe (203) is connected to a gas-liquid separator (3).

4. A well group type jet pump same well production and injection drainage and gas production system according to claim 3, characterized in that: The gas-liquid separator (3) comprises a first flat gate valve (301), a body (302), a buttress (303), a first liquid level transmitter (304), a first pressure gauge (305), a first safety valve (306), a second flat gate valve (307), a first liquid discharge pry flat gate valve (308), a first electric liquid discharge valve (309), a second liquid discharge pry flat gate valve (310), a third liquid discharge pry flat gate valve (311), a first liquid phase flow meter (312), a liquid phase main line (313), a liquid phase branch line (314), a second check valve (315), and a third flat gate valve (316); a buttress (303) is arranged at the bottom of the body (302), and a first liquid level transmitter (304) and a first pressure gauge (305) are installed on the side; the gas phase outlet of the gas-liquid separator (3) is connected to the wellhead gas collection system through the second flat gate valve (307). (8); The liquid phase outlet of the gas-liquid separator (3) is connected to a liquid phase main line (313); the liquid phase main line (313) is provided with a first liquid discharge pry plate gate valve (308), a first electric liquid discharge valve (309), a second liquid discharge pry plate gate valve (310) and a first liquid phase flow meter (312) in sequence along its flow direction; the third liquid discharge pry plate gate valve (311) is arranged in parallel with the first liquid discharge pry plate gate valve (308), the first electric liquid discharge valve (309) and the second liquid discharge pry plate gate valve (310) on the liquid phase main line (313); the liquid phase main line (313) is connected to a power liquid sedimentation system (4); the liquid phase main line (313) is also provided with a liquid phase branch line (314); the liquid phase branch line (314) is provided with a second check valve (315) and a third plate gate valve (316) in sequence along its flow direction, and is connected to an external transmission pipeline.

5. A well group type jet pump same well production and injection drainage and gas production system according to claim 4, characterized in that: The power liquid sedimentation system (4) comprises a second electric drain valve (401), a second liquid level transmitter (402), a sedimentation tank (403), a base (404), a baffle (405), a water outlet (406), a fourth flat gate valve (407), a breathing valve (408), a fifth flat gate valve (409), a first water feeding pump (410), a filter (411), and a second liquid phase flow meter (412); a baffle (405) is vertically arranged inside the sedimentation tank (403), a water outlet (406) is arranged at the bottom of the side, a base (404) is arranged at the bottom, and a breathing valve is arranged at the top. (408); multiple sedimentation tanks (403) are arranged in series via a fourth flat gate valve (407); the first sedimentation tank (403) is connected to the liquid phase main line (313) via a second electric drain valve (401), and a second liquid level transmitter (402) is installed on the side of the sedimentation tank (403) close to the second electric drain valve (401); the outlet of the last sedimentation tank (403) is connected to a ground power system (5), and a fifth flat gate valve (409), a first water feeding pump (410), a filter (411) and a second liquid phase flow meter (412) are installed on the pipeline in sequence.

6. A well group type jet pump same well production and injection drainage and gas production system according to claim 1, characterized in that: The ground power system (5) comprises a sixth flat gate valve (501), a diaphragm pump (502), a seventh flat gate valve (503), an eighth flat gate valve (504), a ninth flat gate valve (505), a tenth flat gate valve (506), a plunger pump (507), an eleventh flat gate valve (508), a liquid phase inlet manifold (509), a twelfth flat gate valve (510), a second gas phase flow meter (511), a self-operated pressure regulating valve (512), a gas generator (513), a control cabinet (514), a return pipeline (515), a third check valve (516), a water supply pump (517); a sixth flat gate valve (501) is installed at the inlet of the diaphragm pump (502); a plurality of the plunger pumps (507) are arranged in sequence, and an eleventh flat gate valve (508) is installed at the inlet of the plurality of plunger pumps (507); one end of the liquid phase inlet manifold (509) is connected to the outlet pipeline of the power liquid sedimentation system (4), and the other end is simultaneously connected to the plurality of eleventh flat gate valves (508) and the sixth flat gate valve (501); a seventh flat gate valve (503) is installed at the outlet of the diaphragm pump (502), and the seventh flat gate valve (503) A reinjection liquid manifold (7) is connected; a tenth flat gate valve (506) is provided at the outlet of each of the plurality of plunger pumps (507); the plurality of tenth flat gate valves (506) are arranged in parallel, and the ends of the seventh flat gate valve (503) and the tenth flat gate valve (506) away from the diaphragm pump (502) and the plunger pump (507) are connected in series through a pipeline; an eighth flat gate valve (504), a ninth flat gate valve (505) and a power liquid injection manifold (6) are sequentially arranged on the series pipeline between the seventh flat gate valve (503) and the tenth flat gate valve (506); the control cabinet One end of (514) is connected to the plunger pump (507), and the other end is connected to the gas generator (513); the gas generator (513) is connected to the external transmission pipeline, and the connecting pipeline is provided with a self-operated pressure regulating valve (512), a second gas phase flow meter (511) and a twelfth flat gate valve (510) in sequence; the plunger pump (507) is also connected to a return pipeline (515), and the return pipeline (515) is connected to the first sedimentation tank (403) along the flow direction, and the return pipeline (515) is provided with a third check valve (516) and a water feeding pump (517) in sequence along its flow direction.

7. A well group type jet pump same well production and injection drainage and gas production system according to any one of claims 1 to 6, characterized in that: The power liquid injection manifold (6) comprises a third liquid phase flow meter (601), a power liquid injection main line (602), a power liquid injection branch line (603) and a fourth check valve (604); the power liquid injection branch line (603) is provided with a fourth check valve (604); one end of the power liquid injection branch line (603) is connected to the power liquid injection line (123), and the other end is connected to the power liquid injection main line (602); The power liquid injection main line (602) is connected to the outlet of the plunger pump (507); the reinjection liquid manifold (7) comprises a reinjection liquid main line (701), a reinjection liquid branch line (702) and a fifth check valve (703); the reinjection liquid branch line (702) is provided with a fifth check valve (703); one end of the reinjection liquid branch line (702) is connected to the reinjection liquid injection line (125), and the other end is connected to the outlet of the diaphragm pump (502).

8. A well group type jet pump same well production and injection drainage and gas production system according to claim 1, characterized in that: The wellhead gas collection system (8) comprises a gas collection pipeline (801), a first emergency shut-off valve (802), a first gas phase flow meter (803), a sixth check valve (804) and a thirteenth flat gate valve (805); one end of the gas collection pipeline (801) is connected to the gas phase outlet of the gas-liquid separator (3), and the other end is connected to the external transmission pipeline; the gas collection pipeline (801) is provided with a first emergency shut-off valve (802), a first gas phase flow meter (803), a sixth check valve (804) and a thirteenth flat gate valve (805) in sequence along its flow direction.

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