CN118065837B - Gas well interconnection gas lift device and use method thereof - Google Patents

Abstract

The invention provides an interconnection gas lifting device between gas wells and a use method thereof, wherein the device comprises supercharging equipment, a multi-stage gas well, a mixed transportation pipeline, a compressor exhaust pipeline, a gas well feeding and discharging pipeline, a separation tank assembly and a separation tank exhaust pipe group; after the gas is pressurized, the gas enters the gas inlet end of a single gas well through the gas well feeding pipeline of the gas well feeding and discharging pipeline, after the gas is lifted, the gas-liquid-solid mixture enters the separation tank assembly through the gas well discharging pipeline of the gas well feeding and discharging pipeline to be separated, the gas flows out through the separation tank exhaust pipe assembly, the solid and the liquid fall into the bottom of the separation tank assembly, and when the total amount of the solid and the liquid reaches a designated height, the solid-liquid separation is carried out on the mixture of the solid and the liquid through the solid impurity cleaning device. According to the invention, one compressor can be used for realizing gas lift under various working conditions, such as single gas well, parallel connection of a plurality of gas wells, serial connection or even parallel connection of a plurality of gas wells, and the like, so that the occupied area of the whole system is small, and the equipment utilization rate of the compressor is improved.

Description

Gas well interconnection gas lift device and use method thereof

Technical Field

The invention belongs to the technical field of wellhead gas exploitation equipment, and particularly relates to an interconnection gas lift device between gas wells and a use method thereof.

Background

With the increasing of energy demand by economic development, the scale development of the gas well can alleviate the energy crisis, but in the middle and later stages of gas production, the formation pressure is reduced, a part of gas wells cannot be produced due to excessive accumulated liquid at the bottom of the well, so as to form abandoned wells, and with the continuous maturity of gas well development process technology, the abandoned wells are required to be reused at present, wherein the gas lift of the waste gas wells is a common method, namely, a compressor is utilized to inject high-pressure gas into the gas wells to lift the gas wells, and in order to better utilize resources, the gas lift of the compressor is generally utilized by taking natural gas in an external pipeline network as raw gas, and the gas lift is injected into the wells after being pressurized by the compressor, so that the pressure in the wells is increased, the capacity of carrying liquid in the gas wells is increased, and the liquid and solid in the gas wells are discharged, so that the gas wells are recovered for production.

At present, in the gas lift process using a compressor, the following two common compressor configuration modes are adopted: firstly, a gas well is provided with a compressor, so that the whole gas well system occupies large space, the cost is high, and the utilization efficiency of the compressor is low; secondly, the whole gas well system is provided with one to two compressors, the compressors are timely moved to the position of the gas well to be required by the hoisting equipment, the defect of the first mode is overcome, but the mode has the defects that the pipelines of the compressors are repeatedly disassembled and potential safety hazards exist in the hoisting process; meanwhile, during gas lift, the liquid and the solid in the abandoned well are mainly discharged by utilizing high-pressure gas, namely, the inlet of the gas-fired well is high-pressure gas, the outlet of the gas-fired well is a mixture of the high-pressure gas, the liquid and the solid, at present, a part of manufacturers adopt simple equipment to ignite the gas in the gas lift process, the mixture of the solid and the liquid is treated according to sewage, the gas after gas lift is not recycled, and the other manufacturers recycle the gas, but the gas-liquid-solid separation process is too complex and inconvenient to operate.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an interconnection gas lift device between gas wells and a use method thereof, which effectively solve the problems that in the gas lift process by utilizing compressors in the prior art, the common compressor configuration modes comprise the following two modes: firstly, a gas well is provided with a compressor, so that the whole gas well system occupies large space, the cost is high, and the utilization efficiency of the compressor is low; secondly, the whole gas well system is provided with one to two compressors, the compressors are timely moved to the position of the gas well to be required by the hoisting equipment, the defect of the first mode is overcome, but the mode has the defects that the pipelines of the compressors are repeatedly disassembled and potential safety hazards exist in the hoisting process; meanwhile, during gas lift, the liquid and the solid in the abandoned well are mainly discharged by utilizing high-pressure gas, namely, the inlet of the gas-fired well is high-pressure gas, the outlet of the gas-fired well is a mixture of the high-pressure gas, the liquid and the solid, at present, a part of manufacturers adopt simple equipment to ignite the gas in the gas lift process, the mixture of the solid and the liquid is treated according to sewage, the gas after gas lift is not recycled, and the other manufacturers recycle the gas, but the gas-liquid-solid separation process is too complex and inconvenient to operate.

In order to achieve the above purpose, the present invention provides the following technical solutions: the gas lifting device comprises supercharging equipment, a multi-stage gas well, a mixed transmission pipeline, a compressor exhaust pipeline, a gas well feeding and discharging pipeline, a separation tank assembly, a separation tank exhaust pipe assembly, a gas storage bypass pipeline, a solid impurity cleaning device, an interstage connection pipeline and a PLC control system; the number of the multi-stage gas wells is not less than three; after the gas is pressurized by the pressurizing equipment, the gas enters the gas inlet end of a single gas well through the gas well feeding pipeline of the gas well feeding and discharging pipeline, after the gas well is lifted, the gas-liquid-solid mixture enters the separating tank assembly through the gas well discharging pipeline of the gas well feeding and discharging pipeline to be separated, the gas flows out through the separating tank exhaust pipe assembly, the solid and the liquid fall into the bottom of the separating tank assembly, and when the total amount of the solid and the liquid reaches a designated height, the solid-liquid separation is carried out on the mixture of the solid and the liquid through the solid impurity cleaning device; the multi-stage gas well includes a first gas well, a second gas well, and a third gas well; the separator tank assembly comprises a first separator tank assembly, a second separator tank assembly and a third separator tank assembly; the number of multi-stage gas wells including gas wells, the number of separator tank assemblies including separator tanks, and the number of solid impurity cleaning devices are consistent.

Preferably, the air inlet end of the supercharging equipment is connected with the mixing transmission pipeline, the air outlet end of the supercharging equipment is connected with the compressor air outlet pipeline, the mixing transmission pipeline is provided with a first stop valve and a first one-way valve, and the compressor air outlet pipeline is provided with a first flowmeter, a second stop valve and a third stop valve.

Preferably, the gas well feed and discharge pipeline comprises a gas well feed pipeline and a gas well discharge pipeline, the gas well feed pipeline comprises a first gas well feed pipeline, a second gas well feed pipeline and a third gas well feed pipeline, the first gas well feed pipeline, the second gas well feed pipeline and the third gas well feed pipeline are all communicated with the compressor discharge pipeline, a fourth stop valve is arranged on the first gas well feed pipeline, a fifth stop valve and a sixth stop valve are arranged on the second gas well feed pipeline, and a seventh stop valve and an eighth stop valve are arranged on the third gas well feed pipeline; the gas well cleanout lines include a first gas well cleanout line in communication with the first separator tank assembly, a second gas well cleanout line in communication with the second separator tank assembly, and a third gas well cleanout line in communication with the third separator tank assembly.

Preferably, the first knockout drum subassembly the second knockout drum subassembly with the structure of third knockout drum subassembly is the same, first knockout drum subassembly includes the knockout drum jar body, knockout drum inlet pipe subassembly, knockout drum drain, level sensor, stirring subassembly, knockout drum gas vent and knockout drum support base, the knockout drum support base is located the bottom of the knockout drum jar body and rather than fixed connection and right the knockout drum jar body plays the supporting role, the knockout drum inlet pipe subassembly with stirring subassembly all is located one side of the knockout drum jar body, the knockout drum inlet pipe subassembly is located the top of stirring subassembly, the knockout drum drain is located the opposite side of the knockout drum jar body, the knockout drum drain is located the bottom of the knockout drum jar body, level sensor is located the front of the knockout drum jar body, the knockout drum gas vent is located the top of the knockout drum jar body, be provided with the inlet pipe stop valve on the knockout drum inlet pipe subassembly, be provided with solenoid valve drain on the knockout drum drain.

Preferably, the separator tank exhaust pipe assembly comprises a first separator tank exhaust pipe, a second separator tank exhaust pipe, a third separator tank exhaust pipe and a gas lift collecting pipeline, wherein the first separator tank exhaust pipe, the second separator tank exhaust pipe and the third separator tank exhaust pipe are communicated with the gas lift collecting pipeline, a second check valve, a second flowmeter and a ninth stop valve are arranged on the first separator tank exhaust pipe, a third check valve, a third flowmeter and a tenth stop valve are arranged on the second separator tank exhaust pipe, a fourth check valve, a fourth flowmeter and an eleventh stop valve are arranged on the third separator tank exhaust pipe, and a fifth check valve and a pressure reducing valve are arranged on the gas lift collecting pipeline.

Preferably, the gas storage bypass pipeline comprises a first bypass pipeline and a second bypass pipeline, one end of the first bypass pipeline is communicated with the gas lift collecting pipeline, the other end of the first bypass pipeline is communicated with the mixed transportation pipeline, a sixth check valve, a twelfth stop valve, a first gas storage bottle group and a thirteenth stop valve are sequentially arranged on the first bypass pipeline, and a seventh check valve, a fourteenth stop valve, a second gas storage bottle group and a fifteenth stop valve are sequentially arranged on the second bypass pipeline; the interstage connection pipeline comprises a first interstage connection pipeline and a second interstage connection pipeline, a sixteenth stop valve is arranged on the first interstage connection pipeline, and a seventeenth stop valve is arranged on the second interstage connection pipeline.

Preferably, the solid impurity cleaning device comprises a cleaning device shell, a cleaning device filter cartridge assembly, a filter screen plate, an upper sealing plate, a sealing pad, a lower sealing plate, a plugging device and plum blossom handle screws, wherein the upper sealing plate and the lower sealing plate are all positioned in the cleaning device shell and fixedly connected with the cleaning device shell, the cleaning device filter cartridge assembly penetrates through the upper sealing plate and the lower sealing plate, the upper sealing plate and the lower sealing plate are all fixedly connected with the cleaning device filter cartridge assembly, a step is formed between the bottom of the lower sealing plate and the cleaning device filter cartridge assembly, the sealing pad is positioned at the bottom of the step, and the plugging device penetrates through the sealing pad and the lower sealing plate and is fixedly connected with the plugging device and the lower sealing plate through a plurality of plum blossom handle screws; the cleaning device comprises a cleaning device shell, and is characterized in that a shell drain pipe is arranged on the cleaning device shell, a plurality of barrel filtrate holes are formed in the cleaning device filter cartridge assembly, a conical feed inlet and a filter mounting groove are formed in the top of the cleaning device filter cartridge assembly, the filter mounting groove is used for placing a filter plate in the cleaning device filter cartridge assembly, a through plugging mounting hole is formed in the center of a lower sealing plate, a first groove is formed in the upper end face of the lower sealing plate, the first groove is close to the bottom of the shell drain pipe, a second groove is formed in the bottom of the lower sealing plate, a lower sealing plate liquid outlet is formed in one side of the lower sealing plate, the size and the position of the lower sealing plate liquid outlet correspond to those of the shell drain pipe, a third groove is formed in the bottom of the lower sealing plate, and a plugging mounting threaded hole is formed in the third groove, and the plugging device comprises a first boss, a second boss, a plugging plate and a plugging plate gripper which are sequentially connected.

The invention also provides a use method of the gas well interconnection gas lift device, which is suitable for a single gas well, and comprises a single gas well gas lift method S1 and a post gas lift solid-liquid-gas separation method S2;

the single gas well gas lift method S1 comprises the following steps:

s11, after a single gas well requiring gas lift is determined, only keeping valves of a gas well feeding pipeline and a gas well feeding pipeline corresponding to the gas well in an open state, and enabling valves of a gas exhaust pipeline of a corresponding separation tank to be in an open state, and closing all valves of an interstage connecting pipeline;

S12, enabling gas in a gas storage bottle group of the gas storage bypass pipeline or gas in the mixed transportation pipeline to flow into pressurizing equipment to pressurize the gas;

S13, the pressurized gas flows into a gas well feeding pipeline opened in the step S11 through a compressor exhaust pipeline, gas lift is carried out on a corresponding gas well, a solid-liquid-gas mixture after gas lift flows into a corresponding separation tank through the gas well discharging pipeline opened in the step S11, the gas is separated through the separation tank, the separated gas is discharged in two paths through a separation tank exhaust pipe assembly, one path of the gas is depressurized through a depressurization valve of the separation tank exhaust pipe assembly and then is conveyed to a designated position through a mixing pipeline, the other path of the gas is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline, and at the moment, the mixture of solid and liquid falls into the bottom of the separation tank;

The solid-liquid-gas separation method S2 after gas lift comprises the following steps:

S21, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly reaches the preset high position of the liquid level sensor, the liquid level sensor feeds back signals to the PLC control system, and a motor of the stirring assembly is started to mix the liquid and the solid;

s22, after a preset time, starting a liquid discharge pipe electromagnetic valve, and enabling the liquid-solid mixture at the bottom of the first separation tank assembly to flow into a solid impurity cleaning device through a liquid discharge pipe of the separation tank;

S23, coarse filtering is carried out on the solid-liquid mixture flowing in the step S22 through a filter screen plate, large-particle solids are left on the surface of the filter screen plate, liquid and small-particle solids enter a cavity formed by a filter cartridge assembly of the cleaning device and a lower sealing plate for secondary filtering, and the liquid flows through a corresponding groove on the upper surface of the lower sealing plate through a filtrate hole of a cylinder body and flows out of a liquid outlet of the shell body to a designated position through a liquid outlet of the lower sealing plate;

s24, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly reaches the preset low level of the liquid level sensor, the liquid level sensor feeds signals back to the PLC control system, and the motor of the stirring assembly and the electromagnetic valve of the liquid discharge pipe are closed;

s25, repeating the steps from S21 to S24 until the gas lift of the corresponding gas well is completed;

S26, loosening the plum blossom handle screw, separating the plugging device from the solid impurity cleaning device, and cleaning the plugging device;

S27, fixing the cleaned plugging device on the solid impurity cleaning device by tightening a plum blossom handle screw.

The invention also provides a use method of the interconnection gas lifting device among gas wells, which is a multi-gas well parallel use method S3, wherein the multi-gas well parallel use method S3 comprises the following steps:

S31, after the gas wells which are connected in parallel and need gas lift are determined, enabling valves of gas well feed pipelines which are connected in parallel to be in an open state, enabling valves of corresponding separation tank exhaust pipelines to be in an open state, and closing all valves of the interstage connection pipelines;

S32, enabling gas in a gas storage bottle group of the gas storage bypass pipeline or gas in the mixed transportation pipeline to flow into pressurizing equipment so as to pressurize the gas;

S33, the pressurized gas flows into a gas well feeding pipeline opened in the step S31 through a compressor exhaust pipeline, gas lift is carried out on the corresponding parallel gas wells at the same time, a solid-liquid-gas mixture after gas lift flows into a corresponding separation tank through the gas well discharging pipeline opened in the step S31, the gas is separated through the separation tank, the separated gas is discharged through the separation tank exhaust pipe assembly in two ways, one way of the separated gas is depressurized through a pressure reducing valve of the separation tank exhaust pipe assembly and then is conveyed to a designated position through a mixing conveying pipeline, and the other way of the separated gas is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline, and at the moment, the mixture of solid and liquid falls into the bottom of the separation tank.

The invention also provides a use method of the interconnection gas lift device among gas wells, which is a multi-gas well series use method S4, wherein the multi-gas well series use method S4 comprises the following steps:

s41, after the serial gas wells needing gas lift are determined, valves of a feed pipeline and a discharge pipeline of a first gas well connected in series are in an open state;

s42, enabling gas in a gas storage bottle group of the gas storage bypass pipeline or gas in the mixed transportation pipeline to flow into pressurizing equipment so as to pressurize the gas;

S43, the pressurized gas enters a feed pipeline of a first gas well of the series gas wells through a compressor exhaust pipeline, gas lift is carried out on the first gas well, a solid-liquid-gas mixture of the first gas well after gas lift enters a corresponding separation tank for separation, and the separated gas enters a second gas well of the series gas well through an interstage pipeline, and gas lift is carried out on a next gas well;

S44, after the gas lift of the last gas well of the series gas wells is finished, the solid-liquid-gas mixture enters a corresponding separation tank of the last gas well to be separated, the separated gas is discharged through an exhaust pipe assembly of the separation tank in two ways, one way is depressurized through a pressure reducing valve of the exhaust pipe assembly of the separation tank and then is conveyed to a designated position through a mixed conveying pipeline, the other way is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline, and at the moment, the mixture of the solid and the liquid falls into the bottom of the separation tank.

Compared with the prior art, the invention has the following beneficial effects:

(1) According to the gas lifting device for interconnection among gas wells, which is provided by the invention, through the arrangement of the mixed transmission pipeline, the compressor exhaust pipeline, the gas well feeding and discharging pipeline, the separation tank assembly, the separation tank exhaust pipe assembly, the gas storage bypass pipeline, the solid impurity cleaning device, the interstage connection pipeline and the PLC control system, gas lifting under various working conditions such as parallel connection of a single gas well, a plurality of gas wells, serial connection of a plurality of gas wells and the like can be realized by using one compressor, the occupied area of the whole system is small, and the equipment utilization rate of the compressor is improved.

(2) According to the gas well interconnection gas lifting device, the stirring device is arranged in the separation tank assembly, when the solid-liquid mixture in the separation tank assembly reaches a certain height, the solid-liquid mixture in the separation tank assembly is uniformly stirred through the stirring device, so that the gas is conveniently and timely discharged, and meanwhile, the liquid is kept in the separation tank assembly through the arrangement of the liquid level sensor, so that the gas is prevented from flowing out through the liquid discharge pipeline of the separation tank.

(3) According to the gas well interconnection gas lifting device provided by the invention, through the structural arrangement of the separating tank assembly, gas after gas lifting can be ensured to be rapidly separated and enter the mixed transportation pipeline or the gas storage cylinder group, so that the waste of resources is avoided.

(4) According to the gas-well interconnection gas lifting device, through the arrangement of the separation tank assembly and the solid impurity cleaning device, the liquid-solid mixture is separated twice, and the separation effect is improved.

(5) The gas lifting device for interconnection between gas wells has the advantages that the structure is simple, the operation is convenient, and special personnel are not required for cleaning or disassembling the plugging device.

(6) According to the gas well interconnection gas lifting device provided by the invention, according to the outlet flow of the supercharging equipment, the flow required by the lifted gas well and the emergency degree of the recovered gas well, when three or more gas wells are lifted at the same time, a scheme of combining the gas wells in parallel and in series can be implemented according to specific conditions, so that the application range of the gas well interconnection gas lifting device is wider.

Drawings

FIG. 1 is a general schematic of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the structure of the first separator tank assembly of the present invention;

FIG. 3 is a schematic view of the structure of the solid impurity cleaning device of the present invention;

FIG. 4 is a schematic view showing the internal structure of the solid impurity cleaning apparatus of the present invention;

FIG. 5 is a schematic view of the lower seal plate of the present invention;

FIG. 6 is a schematic view of the back side of FIG. 5;

FIG. 7 is a schematic view of the structure of the occluding device of the present invention;

Fig. 8 is a general schematic of embodiment 2 of the present invention.

In the figure: 110. a supercharging device; 120. a first gas well; 130. a second gas well; 140. a third gas well; 150. a fourth gas well; 200. a mixing pipeline; 201. a first stop valve; 202. a first one-way valve; 300. a compressor discharge duct; 301. a first flowmeter; 302. a second shut-off valve; 303. a third stop valve; 400. gas well feed and discharge pipelines; 410. a first gas well feed line; 411. a fourth shut-off valve; 420. a second gas well feed conduit; 421. a fifth shut-off valve; 422. a sixth shut-off valve; 430. a third gas well feed conduit; 431. a seventh stop valve; 432. An eighth shutoff valve; 440. a fourth gas well feed conduit; 450. a first gas well discharge conduit; 460. a second gas well discharge conduit; 470. a third gas well discharge conduit; 480. a fourth gas well discharge conduit; 500. a first separator tank assembly; 510. a separation tank body; 520. a separator feed tube assembly; 521. a feed tube shut-off valve; 530. a separator tank drain line; 531. a drain solenoid valve; 540. a separation tank drain pipe; 550. a liquid level sensor; 560. a stirring assembly; 570. an exhaust port of the separation tank; 500a, a second separator tank assembly; 500b, a third separator tank assembly; 500c, a fourth separator tank assembly; 600. a separator tank vent tube assembly; 610. a first separator tank exhaust duct; 611. a second one-way valve; 612. a second flowmeter; 613. a ninth shut-off valve; 620. a second separator tank exhaust duct; 621. a third one-way valve; 622. a third flowmeter; 623. a tenth shut-off valve; 630. a third separator tank exhaust duct; 631. a fourth one-way valve; 632. a fourth flow meter; 633. an eleventh stop valve; 640. a fourth separator tank exhaust duct; 650. a gas lift manifold; 651. a fifth check valve; 652. a pressure reducing valve; 700. A gas storage bypass line; 710. a first bypass conduit; 711. a sixth one-way valve; 712. a twelfth stop valve; 713. a first cylinder group; 714. a thirteenth shut-off valve; 720. a second bypass conduit; 721. a seventh one-way valve; 722. a fourteenth stop valve; 723. a second cylinder group; 724. a fifteenth shut-off valve; 800. a solid impurity cleaning device; 810. a cleaning device housing; 811. a shell liquid outlet pipe; 820. a cleaning device filter cartridge assembly; 821. a cartridge filtrate hole; 822. a conical feed inlet; 823. a filter plate mounting groove; 830. a filter screen plate; 840. An upper sealing plate; 850. a sealing gasket; 860. a lower sealing plate; 861. a first groove; 862. a second groove; 863. a liquid outlet of the lower sealing plate; 864. plugging the mounting hole; 865. a third groove; 866. plugging the mounting threaded hole; 870. a plugging device; 871. a first boss; 872. a second boss; 873. a plugging plate; 874. plugging plate grippers; 880. quincuncial handle screws; 900. an inter-stage connecting pipe; 910. a first inter-stage connecting pipe; 911. a sixteenth stop valve; 920. a second inter-stage connecting pipe; 921. seventeenth stop valve; 930. and a pipeline is connected between the third stages.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," and the like are merely used for convenience in describing the present invention and to simplify the description, and do not denote or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

It should be understood that in the description of the invention, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and defined.

Example 1

Referring to fig. 1 to 7, an interconnection gas lift device between gas wells provided in this embodiment 1 includes a supercharging device 110, a multi-stage gas well, a mixing pipeline 200, a compressor exhaust pipeline 300, a gas well feed and discharge pipeline 400, a separator tank assembly, a separator tank exhaust pipe assembly 600, a gas storage bypass pipeline 700, a solid impurity cleaning device 800, an inter-stage connection pipeline 900, and a PLC control system.

The number of multi-stage gas wells in this example 1 is three, and the multi-stage gas wells include a first gas well 120, a second gas well 130, and a third gas well 140, each of which has different flow requirements for the high pressure gas to be introduced depending on the situation in the field when lifting the gas.

The inlet end of the supercharging equipment 110 is connected with a mixing pipeline 200, well head gas of a normal gas well is boosted to about 6MPa by a mixing compressor and enters the mixing pipeline 200, the well head gas is conveyed to a designated position through the mixing pipeline 200, the exhaust end of the supercharging equipment 110 is connected with a compressor exhaust pipeline 300, a first stop valve 201 and a first check valve 202 are arranged on the mixing pipeline 200, and a first flowmeter 301, a second stop valve 302 and a third stop valve 303 are arranged on the compressor exhaust pipeline 300.

The knock-out pot assembly includes a first knock-out pot assembly 500, a second knock-out pot assembly 500a and a third knock-out pot assembly 500b, the first knock-out pot assembly 500, the second knock-out pot assembly 500a and the third knock-out pot assembly 500b are identical in structure, the number of multi-stage gas wells including gas wells, the number of knock-out pot assemblies including knock-out pots, and the number of solid impurity removing devices 800 are identical.

The gas well feed and discharge pipeline 400 comprises a gas well feed pipeline and a gas well discharge pipeline, wherein the gas well feed pipeline comprises a first gas well feed pipeline 410, a second gas well feed pipeline 420 and a third gas well feed pipeline 430, the first gas well feed pipeline 410, the second gas well feed pipeline 420 and the third gas well feed pipeline 430 are communicated with the compressor discharge pipeline 300, a fourth stop valve 411 is arranged on the first gas well feed pipeline 410, a fifth stop valve 421 and a sixth stop valve 422 are arranged on the second gas well feed pipeline 420, and a seventh stop valve 431 and an eighth stop valve 432 are arranged on the third gas well feed pipeline 430; the gas well cleanout lines include a first gas well cleanout line 450, a second gas well cleanout line 460, and a third gas well cleanout line 470, the first gas well cleanout line 450 being in communication with the first separator tank assembly 500, the second gas well cleanout line 460 being in communication with the second separator tank assembly 500a, and the third gas well cleanout line 470 being in communication with the third separator tank assembly 500 b.

After the gas is pressurized by the pressurizing equipment 110, the gas enters the gas inlet end of a single gas well through the gas well feeding pipeline of the gas well feeding and discharging pipeline 400, after the gas is lifted, the gas-liquid-solid mixture enters the separation tank assembly through the gas well discharging pipeline of the gas well feeding and discharging pipeline 400 to be separated, the gas flows out through the separation tank exhaust pipe assembly 600, the solid and the liquid fall into the bottom of the separation tank assembly, and when the total amount of the solid and the liquid reaches a designated height, the solid-liquid separation is carried out on the mixture of the solid and the liquid through the solid impurity cleaning device 800.

The first knockout drum subassembly 500 includes knockout drum jar body 510, knockout drum inlet pipe subassembly 520, knockout drum drain line 530, knockout drum drain line 540, level sensor 550, stirring subassembly 560, knockout drum gas vent 570 and knockout drum supporting base, the knockout drum supporting base is located the bottom of knockout drum jar body 510 and rather than fixed connection and plays the supporting role to knockout drum jar body 510, knockout drum inlet pipe subassembly 520 and stirring subassembly 560 all are located one side of knockout drum jar body 510, knockout drum inlet pipe subassembly 520 is located the top of stirring subassembly 560, knockout drum drain line 530 is located the opposite side of knockout drum jar body 510, knockout drum drain line 540 is located the bottom of knockout drum jar body 510, level sensor 550 is located the front of knockout drum jar body 510, knockout drum gas vent 570 is located the top of knockout drum jar body 510, be provided with inlet pipe stop valve 521 on the knockout drum inlet pipe subassembly 520, be provided with drain line solenoid valve 531 on the knockout drum drain line 530.

The separator tank vent pipe assembly 600 includes a first separator tank vent pipe 610, a second separator tank vent pipe 620, a third separator tank vent pipe 630, and a gas lift collecting pipe 650, the first separator tank vent pipe 610, the second separator tank vent pipe 620, and the third separator tank vent pipe 630 are all in communication with the gas lift collecting pipe 650, the first separator tank vent pipe 610 is provided with a second check valve 611, a second flowmeter 612, and a ninth shut-off valve 613, the second separator tank vent pipe 620 is provided with a third check valve 621, a third flowmeter 622, and a tenth shut-off valve 623, the third separator tank vent pipe 630 is provided with a fourth check valve 631, a fourth flowmeter 632, and an eleventh shut-off valve 633, and the gas lift collecting pipe 650 is provided with a fifth check valve 651 and a pressure relief valve 652.

The pressurized gas-liquid-solid mixture enters the separator tank body 510 from the first gas well discharge pipe 450 through the separator tank feed pipe assembly 520, and the pressurized gas separator tank exhaust port 570 is discharged from the first separator tank exhaust pipe 610 through the arrangement of the internal spiral plate, the wire mesh demister, the porous plate and the like, and the solids and the liquids fall into the bottom of the separator tank body 510.

The gas storage bypass pipeline 700 comprises a first bypass pipeline 710 and a second bypass pipeline 720, one end of the first bypass pipeline 710 is communicated with the gas lift collecting pipeline 650, the other end of the first bypass pipeline 710 is communicated with the mixed transportation pipeline 200, one end of the second bypass pipeline 720 is communicated with the gas lift collecting pipeline 650, the other end of the second bypass pipeline 720 is communicated with the mixed transportation pipeline 200, a sixth check valve 711, a twelfth stop valve 712, a first gas storage bottle group 713 and a thirteenth stop valve 714 are sequentially arranged on the first bypass pipeline 710, and a seventh check valve 721, a fourteenth stop valve 722, a second gas storage bottle group 723 and a fifteenth stop valve 724 are sequentially arranged on the second bypass pipeline 720; the inter-stage connecting pipe 900 includes a first inter-stage connecting pipe 910 and a second inter-stage connecting pipe 920, a sixteenth shut-off valve 911 is provided on the first inter-stage connecting pipe 910, and a seventeenth shut-off valve 921 is provided on the second inter-stage connecting pipe 920.

Referring to fig. 1, the first bypass line 710 and the second bypass line 720 are essentially a set of gas storage cylinders, and the gas in the gas lift manifold 650 is preferably delivered to the mixing line 200 to a designated location via the pressure relief valve 652, but when the pressurization apparatus 110 is continuously operated, a portion of the gas in the gas lift manifold 650 is diverted to the set of gas storage cylinders in the gas storage bypass line 700; when the pressurizing device 110 works, the gas in the gas storage bottle group of the gas storage bypass pipeline 700 is preferably selected as a gas source, and when the gas pressure in the gas storage bottle group of the gas storage bypass pipeline 700 is insufficient, the first stop valve 201 can be opened, and the mixed gas of the mixed gas conveying pipeline 200 is used as the gas source of the pressurizing device 110.

The solid impurity cleaning device 800 includes cleaning device casing 810, cleaning device cartridge assembly 820, filter screen 830, upper seal plate 840, gasket 850, lower seal plate 860, plugging device 870 and plum blossom handle screw 880, upper seal plate 840, lower seal plate 860 are all located inside cleaning device casing 810 and fixedly connected therewith, cleaning device cartridge assembly 820 runs through upper seal plate 840 and lower seal plate 860, upper seal plate 840, lower seal plate 860 are all fixedly connected with cleaning device cartridge assembly 820, the bottom of lower seal plate 860 forms a step with cleaning device cartridge assembly 820, gasket 850 is located the bottom of this step, plugging device 870 runs through gasket 850 and lower seal plate 860, and fixedly connected plugging device 870 and lower seal plate 860 through a plurality of plum blossom handle screws 880.

The cleaning device shell 810 is provided with a shell drain pipe 811, the cleaning device filter cartridge assembly 820 is provided with a plurality of barrel filtrate holes 821, the top of the cleaning device filter cartridge assembly 820 is provided with a conical feed inlet 822 and a filter plate mounting groove 823, the filter screen plate 830 is placed in the cleaning device filter cartridge assembly 820 through the filter plate mounting groove 823, the filter screen plate 830 is provided with a handle (not shown in the figure), the filter screen plate 830 can be taken out of the cleaning device filter cartridge assembly 820 through the handle of the filter screen plate 830, the coarse filtration solid impurities are conveniently cleaned, the center of the lower sealing plate 860 is provided with a through sealing mounting hole 864, the upper end surface of the lower sealing plate 860 is provided with a first groove 861, the bottom of the first groove 861, which is close to the shell drain pipe 811, is provided with a second groove 862, one side of the lower sealing plate 860 is provided with a lower sealing plate liquid outlet 863, the size and position of the lower sealing plate liquid outlet 863 correspond to those of the shell liquid outlet pipe 811, liquid filtered by the shell liquid outlet pipe 811 flows into the first grooves 861 around the lower sealing plate 860 and then flows into the second grooves 862, the liquid is discharged through the lower sealing plate liquid outlet 863 and the shell liquid outlet pipe 811, the bottom of the lower sealing plate 860 is provided with a third groove 865, a plugging installation threaded hole 866 is formed in the third groove 865, the plugging device 870 comprises a first boss 871, a second boss 872, a plugging plate 873 and a plugging plate gripper 874 which are sequentially connected, the first boss 871 is clamped with a sealing gasket 850, the plugging plate 873 is provided with mounting holes, and a plurality of plum blossom handle screws 880 penetrate through the mounting holes of the plugging plate 873 and the plugging installation threaded holes 866 to firmly connect the plugging device 870 with the lower sealing plate 860

The embodiment 1 of the invention also provides a use method of the gas well interconnection gas lift device, which comprises the following steps: the method comprises a single gas well gas lift method S1, a multi-gas well parallel use method S3, a multi-gas well serial use method S4 and a gas lift post solid-liquid-gas separation method S2.

The single gas well gas lift method S1 comprises the following steps:

and S11, after a single gas well requiring gas lift is determined, only keeping valves of a gas well feeding pipeline and a gas well feeding pipeline corresponding to the gas well in an open state, and enabling the valves of a separation tank exhaust pipeline corresponding to the gas well in the open state to close all valves of the interstage connection pipeline 900.

S12, the gas in the gas storage bottle group of the gas storage bypass pipeline 700 or the gas in the mixed transmission pipeline 200 flows into the pressurizing equipment 110 to pressurize the gas.

S13, the pressurized gas flows into a gas well feeding pipeline opened in the step S11 through a compressor exhaust pipeline 300, gas lift is carried out on the corresponding gas well, a solid-liquid-gas mixture after gas lift flows into a corresponding separation tank through the gas well discharging pipeline opened in the step S11, the gas is separated through the separation tank, the separated gas is discharged through the separation tank exhaust pipe assembly 600 in two ways, one way is depressurized through a depressurization valve 652 of the separation tank exhaust pipe assembly 600 and then is conveyed to a designated position through a mixing conveying pipeline 200, and the other way is conveyed into a spare gas storage bottle group of the gas storage bypass pipeline 700, and at the moment, the mixture of solids and liquid falls into the bottom of the separation tank.

The multi-gas well parallel use method S3 comprises the following steps:

And S31, after the gas wells requiring gas lift are determined, the valves of the gas well feed pipelines requiring gas lift are in an open state, the valves of the corresponding separation tank exhaust pipelines are in an open state, and all the valves of the interstage connection pipeline 900 are closed.

S32, the gas in the gas storage bottle group of the gas storage bypass pipeline 700 or the gas in the mixed transmission pipeline 200 flows into the pressurizing equipment 110 to pressurize the gas.

S33, the pressurized gas flows into the gas well feeding pipeline opened in the step S31 through the compressor exhaust pipeline 300, gas lift is carried out on the corresponding parallel gas wells at the same time, the solid-liquid-gas mixture after gas lift flows into the corresponding separating tank through the gas well discharging pipeline opened in the step S31, the gas is separated through the separating tank, the separated gas is discharged through the separating tank exhaust pipe assembly 600 in two ways, one way is conveyed to a designated position through the mixing conveying pipeline 200 after being depressurized through the depressurization valve 652 of the separating tank exhaust pipe assembly 600, and the other way is conveyed into the spare gas storage bottle group of the gas storage bypass pipeline 700, and at the moment, the mixture of solid and liquid falls into the bottom of the separating tank.

Wherein the multi-gas well series use method S4 includes the steps of:

and S41, after the serial gas wells requiring gas lift are determined, the valves of the feed pipeline and the discharge pipeline of the first gas well in series are in an open state.

S42, the gas in the gas storage bottle group of the gas storage bypass pipeline 700 or the gas in the mixed transmission pipeline 200 flows into the pressurizing equipment 110 to pressurize the gas.

And S43, the pressurized gas enters a feed pipeline of a first gas well of the series gas wells through a compressor exhaust pipeline 300, gas lift is carried out on the first gas well, a solid-liquid-gas mixture of the first gas well after gas lift enters a corresponding separation tank for separation, and the separated gas enters a second gas well of the series gas well through an interstage pipeline, and gas lift is carried out on a next gas well.

S44, after the gas lift of the last gas well of the series gas wells is finished, the solid-liquid-gas mixture enters a corresponding separation tank of the last gas well to be separated, the separated gas is discharged in two paths through the separation tank exhaust pipe assembly 600, one path of the gas is depressurized through the pressure reducing valve 652 of the separation tank exhaust pipe assembly 600 and then is conveyed to a designated position through the mixed conveying pipeline 200, the other path of the gas is conveyed to a spare gas storage bottle group of the gas storage bypass pipeline 700, and at the moment, the mixture of the solid and the liquid falls into the bottom of the separation tank.

The solid-liquid-gas separation method S2 after gas lift comprises the following steps:

And S21, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly 500 reaches the preset high level of the liquid level sensor 550, the liquid level sensor 550 feeds back a signal to the PLC control system, and the motor of the stirring assembly 560 is started to mix the liquid and the solid.

S22, after a preset time, the liquid-solid mixture at the bottom of the first separation tank assembly 500 flows into the solid impurity cleaning device 800 through the separation tank liquid discharge pipe 530 by starting the liquid discharge pipe electromagnetic valve 531.

S23, the solid-liquid mixture flowing in the step S22 is firstly subjected to coarse filtration through the filter screen plate 830, large-particle solids are left on the surface of the filter screen plate 830, liquid and small-particle solids enter a cavity formed by the filter cartridge assembly 820 of the cleaning device and the lower sealing plate 860 for secondary filtration, and the liquid flows through the corresponding grooves on the upper surface of the lower sealing plate 860 through the cylinder filtrate holes 821, flows out of the shell liquid outlet pipe 811 to a designated position through the lower sealing plate liquid outlet 863.

And S24, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly 500 reaches the preset low level of the liquid level sensor 550, the liquid level sensor 550 feeds back a signal to the PLC control system, and the motor of the stirring assembly 560 and the liquid discharge pipe electromagnetic valve 531 are closed.

S25, repeating the steps from S21 to S24 until the gas lift of the corresponding gas well is completed.

S26, loosening the plum blossom handle screw 880, separating the plugging device 870 from the solid impurity cleaning device 800, and cleaning the plugging device 870.

And S27, fixing the cleaned plugging device 870 on the solid impurity cleaning device 800 by screwing the plum blossom handle screw 880.

If a single gas well is lifted, the single gas well gas lifting method S1 is only needed, but in practical application, gas lifting of a plurality of gas wells is possibly involved, and the outlet flow of the pressurizing device 110 and the flow required by gas well gas lifting are involved, when the flow of the pressurizing device is far higher than that of the single gas well requiring gas lifting, the multi-gas well parallel use method S3 is generally adopted, and when the flow of the pressurizing device is far close to or slightly higher than that of the single gas well requiring gas lifting, the multi-gas well serial use method S4 is generally adopted.

Referring to fig. 1, when the valves on the first gas well feed line 410 and the first separator tank discharge line 610 are in an open state, and the valves on the third gas well feed line 430 and the third separator tank discharge line 630 are all in an open state, all the valves of the inter-stage connecting line 900 are in a closed state, the valves on the second gas well feed line 420 and the second separator tank discharge line 620 are in a closed state, and the valves of the compressor discharge line 300 are in an open state, the device of the present application can be used to rapidly perform parallel gas lift on the first gas well 120 and the third gas well 140.

Referring again to fig. 1, the second stop valve 302, the sixth stop valve 422, the ninth stop valve 613, the seventeenth stop valve 921, and the tenth stop valve 623 are all closed, and the sixteenth stop valve 911, the fourth stop valve 411, the fifth stop valve 421, the third stop valve 303, the seventh stop valve 431, the eighth stop valve 432, and the eleventh stop valve 633 are all opened, so that the high-pressure gas flowing out from the pressurizing device 110 firstly lifts the first gas well 120, and after the gas lift is completed, the gas, the liquid and the solid flow into the first separation tank assembly 500 to be separated, the separated gas with the pressure enters the third gas well 140 to be lifted, and after the gas lift is completed, the gas, the liquid and the solid flow into the third separation tank assembly 500b to be separated, and the separated gas with the pressure flows into the gas lift collecting pipe 650 through the third separation tank exhaust pipe 630, so that the device of the application performs serial gas lift on the first gas well 120 and the third gas well.

Referring to fig. 1, four cases are connected in parallel, one is simultaneous gas lift for the first gas well 120, the second gas well 130, and the third gas well 140, the other is simultaneous gas lift for the first gas well 120 and the second gas well 130, the third is simultaneous gas lift for the first gas well 120 and the third gas well 140, and the third is simultaneous gas lift for the second gas well 130 and the third gas well 140.

Similarly, there are four cases in series, one is the sequential gas lift for the first gas well 120, the second gas well 130, and the third gas well 140, the second is the sequential gas lift for the first gas well 120 and the second gas well 130, the third is the sequential gas lift for the first gas well 120 and the third gas well 140, and the third is the sequential gas lift for the second gas well 130 and the third gas well 140.

Example 2

Referring to fig. 8, an interconnection gas lift device between gas wells is provided in this embodiment 2, and the basic structure of the interconnection gas lift device is the same as that of embodiment 1, but in this embodiment 2, the number of multi-stage gas wells is four, that is, the multi-stage gas wells include a first gas well 120, a second gas well 130, a third gas well 140, and a fourth gas well.

In example 2, the gas well feed line of gas well feed and discharge line 400 further comprises a fourth gas well feed line 440, the gas well discharge line of gas well feed and discharge line 400 further comprises a fourth gas well discharge line 480, the separator tank assembly further comprises a fourth separator tank assembly 500c, the rear end of the fourth separator tank assembly 500c is provided with a corresponding solid impurity cleaning device 800, the separator tank vent line assembly 600 further comprises a fourth separator tank vent line 640, the inter-stage connection line 900 further comprises a third inter-stage connection line 9300, such that the respective connection ends of the fourth separator tank assembly 500c are configured identically to the preceding first, second and third separator tank assemblies 500, 500a, 500 b.

In embodiment 2, the single gas well gas lift method, the multi-gas well parallel connection using method and the multi-gas well serial connection using method in embodiment 1 can be still adopted, and according to the size of the outlet flow of the supercharging equipment 110, the size of the flow required by the gas well to be lifted and the emergency degree of the gas well to be recovered, when three or more gas wells are lifted simultaneously, the combination of the gas wells in parallel connection and serial connection can be realized according to the specific conditions, so that the application range of the invention is wider.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The gas lift device comprises supercharging equipment (110) and a multi-stage gas well, and is characterized by further comprising a mixed transportation pipeline (200), a compressor exhaust pipeline (300), a gas well feeding and discharging pipeline (400), a separation tank assembly, a separation tank exhaust pipe assembly (600), a gas storage bypass pipeline (700), a solid impurity cleaning device (800), an inter-stage connecting pipeline (900) and a PLC control system;

the number of the multi-stage gas wells is not less than three;

After the gas is pressurized by the pressurizing equipment (110), the gas enters the gas inlet end of a single gas well through the gas well feeding pipeline of the gas well feeding and discharging pipeline (400), after the gas well is lifted, the gas-liquid-solid mixture enters the separation tank assembly through the gas well discharging pipeline of the gas well feeding and discharging pipeline (400) to be separated, the gas flows out through the separation tank exhaust pipe assembly (600), the solid and the liquid fall into the bottom of the separation tank assembly, when the total amount of the solid and the liquid reaches a designated height, the liquid level sensor of the separation tank assembly feeds back a signal to the PLC control system, and the motor of the stirring assembly of the separation tank assembly is started to mix the liquid and the solid; then the solid impurity cleaning device (800) is used for carrying out solid-liquid separation on the mixture of the solid and the liquid;

The multi-stage gas well includes a first gas well (120), a second gas well (130), and a third gas well (140); the separator tank assembly comprises a first separator tank assembly (500), a second separator tank assembly (500 a) and a third separator tank assembly (500 b); the number of multi-stage gas wells including gas wells, the number of separator tank assemblies including separator tanks, and the number of solid impurity cleaning devices (800) are consistent;

The solid impurity cleaning device (800) comprises a cleaning device shell (810), a cleaning device filter cartridge assembly (820), a filter screen plate (830), an upper sealing plate (840), a sealing gasket (850), a lower sealing plate (860), a plugging device (870) and plum blossom handle screws (880), wherein the upper sealing plate (840) and the lower sealing plate (860) are respectively positioned in the cleaning device shell (810) and fixedly connected with the cleaning device shell, the cleaning device filter cartridge assembly (820) penetrates through the upper sealing plate (840) and the lower sealing plate (860), the upper sealing plate (840) and the lower sealing plate (860) are fixedly connected with the cleaning device filter cartridge assembly (820), a step is formed between the bottom of the lower sealing plate (860) and the cleaning device filter cartridge assembly (820), the sealing gasket (850) is positioned at the bottom of the step, and the plugging device (870) penetrates through the sealing gasket (850) and the lower sealing plate (860) and is fixedly connected with the lower sealing plate (860) through a plurality of plum blossom handle screws (880); be provided with casing drain pipe (811) on cleaning device casing (810), a plurality of barrel filtrate holes (821) have been seted up on cleaning device cartridge filter subassembly (820), the top of cleaning device cartridge filter subassembly (820) is provided with toper feed inlet (822) and filter mounting groove (823), through filter mounting groove (823) will filter screen plate (830) are put into in cleaning device cartridge filter subassembly (820), through shutoff mounting hole (864) have been seted up at lower shrouding (860) central authorities, first recess (861) have been seted up to the up end of shrouding (860) down, first recess (861) are close to the bottom of casing drain pipe (811) is provided with second recess (862), down shrouding liquid outlet (863) have been seted up to one side of shrouding (860), down shrouding liquid outlet (863) the size and position with casing drain pipe (811) position are corresponding, the bottom of shrouding (860) is provided with third recess (865), third recess 865) in-hole (866), install (876), shutoff boss (874) and shutoff boss (874) are connected in proper order.

2. The gas well interconnection gas lift device according to claim 1, wherein an air inlet end of the supercharging equipment (110) is connected with the mixed transportation pipeline (200), an air outlet end of the supercharging equipment (110) is connected with the compressor air outlet pipeline (300), a first stop valve (201) and a first one-way valve (202) are arranged on the mixed transportation pipeline (200), and a first flowmeter (301), a second stop valve (302) and a third stop valve (303) are arranged on the compressor air outlet pipeline (300).

3. The interconnection gas lift device between gas wells according to claim 1, wherein the gas well feed and discharge pipeline (400) comprises the gas well feed pipeline and the gas well discharge pipeline, the gas well feed pipeline comprises a first gas well feed pipeline (410), a second gas well feed pipeline (420) and a third gas well feed pipeline (430), the first gas well feed pipeline (410), the second gas well feed pipeline (420) and the third gas well feed pipeline (430) are all communicated with the compressor discharge pipeline (300), a fourth stop valve (411) is arranged on the first gas well feed pipeline (410), a fifth stop valve (421) and a sixth stop valve (422) are arranged on the second gas well feed pipeline (420), and a seventh stop valve (431) and an eighth stop valve (432) are arranged on the third gas well feed pipeline (430); the gas well cleanout lines include a first gas well cleanout line (450), a second gas well cleanout line (460), and a third gas well cleanout line (470), the first gas well cleanout line (450) is in communication with the first separator tank assembly (500), the second gas well cleanout line (460) is in communication with the second separator tank assembly (500 a), and the third gas well cleanout line (470) is in communication with the third separator tank assembly (500 b).

4. The gas well inter-gas lift apparatus of claim 1, wherein the first separator tank assembly (500), the second separator tank assembly (500 a) and the third separator tank assembly (500 b) are identical in structure, the first separator tank assembly (500) comprises a separator tank body (510), a separator tank feed pipe assembly (520), a separator tank drain pipe (530), a separator tank blowdown pipe (540), a liquid level sensor (550), a stirring assembly (560), a separator tank exhaust port (570) and a separator tank support base, the separator tank support base is positioned at the bottom of the separator tank body (510) and fixedly connected with the separator tank body and supports the separator tank body (510), the separator tank feed pipe assembly (520) and the stirring assembly (560) are both positioned at one side of the separator tank body (510), the separator tank drain pipe assembly (520) is positioned at the top of the stirring assembly (560), the separator tank drain pipe (530) is positioned at the other side of the separator tank body (510), the separator tank pipe (540) is positioned at the top of the separator tank body (510), the separator tank drain pipe (540) is positioned at the top of the separator tank body (510), the separating tank feeding pipe assembly (520) is provided with a feeding pipe stop valve (521), and the separating tank draining pipe (530) is provided with a draining pipe electromagnetic valve (531).

5. The gas well interconnection gas lift device according to claim 4, wherein the separator tank exhaust pipe assembly (600) comprises a first separator tank exhaust pipe (610), a second separator tank exhaust pipe (620), a third separator tank exhaust pipe (630) and a gas lift collecting pipe (650), the first separator tank exhaust pipe (610), the second separator tank exhaust pipe (620) and the third separator tank exhaust pipe (630) are all communicated with the gas lift collecting pipe (650), a second check valve (611), a second flowmeter (612) and a ninth stop valve (613) are arranged on the first separator tank exhaust pipe (610), a third check valve (621), a third flowmeter (622) and a tenth stop valve (623) are arranged on the second separator tank exhaust pipe (620), a fourth check valve (631), a fourth flowmeter (651) and an eleventh stop valve (633) are arranged on the third separator tank exhaust pipe (630), and a fifth check valve (652) and a fifth stop valve (651) are arranged on the gas lift collecting pipe (650).

6. The gas well interconnection gas lift device according to claim 5, wherein the gas storage bypass pipeline (700) comprises a first bypass pipeline (710) and a second bypass pipeline (720), one end of the first bypass pipeline (710) is communicated with the gas lift collecting pipeline (650), the other end of the first bypass pipeline (710) is communicated with the mixing pipeline (200), a sixth check valve (711), a twelfth stop valve (712), a first gas storage bottle group (713) and a thirteenth stop valve (714) are sequentially arranged on the first bypass pipeline (710), and a seventh check valve (721), a fourteenth stop valve (722), a second gas storage bottle group (723) and a fifteenth stop valve (724) are sequentially arranged on the second bypass pipeline (720); the inter-stage connecting pipeline (900) comprises a first inter-stage connecting pipeline (910) and a second inter-stage connecting pipeline (920), a sixteenth stop valve (911) is arranged on the first inter-stage connecting pipeline (910), and a seventeenth stop valve (921) is arranged on the second inter-stage connecting pipeline (920).

7. The method of use of an interconnection gas lift device between gas wells according to any one of claims 4-6 for single gas wells, wherein the method of use comprises a single gas well gas lift method S1 and a post gas lift solid-liquid-gas separation method S2;

the single gas well gas lift method S1 comprises the following steps:

S11, after a single gas well requiring gas lift is determined, only keeping valves of a gas well feeding pipeline and a gas well feeding pipeline corresponding to the gas well in an open state, and enabling valves of a separation tank exhaust pipeline corresponding to the gas well in an open state, and closing all valves of an interstage connection pipeline (900);

S12, enabling gas in a gas storage bottle group of the gas storage bypass pipeline (700) or gas in the mixed transmission pipeline (200) to flow into the pressurizing equipment (110) so as to pressurize the gas;

S13, the pressurized gas flows into a gas well feeding pipeline opened in the step S11 through a compressor exhaust pipeline (300), gas lift is carried out on a corresponding gas well, a solid-liquid-gas mixture after gas lift flows into a corresponding separation tank through the gas well discharging pipeline opened in the step S11, the gas is separated through the separation tank, the separated gas is discharged through a separation tank exhaust pipe assembly (600) in two ways, one way is depressurized through a depressurization valve (652) of the separation tank exhaust pipe assembly (600) and then is conveyed to a designated position through a mixing conveying pipeline (200), and the other way is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline (700), and at the moment, the mixture of the solid and the liquid falls into the bottom of the separation tank;

The solid-liquid-gas separation method S2 after gas lift comprises the following steps:

S21, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly (500) reaches the preset high position of the liquid level sensor (550), the liquid level sensor (550) feeds back signals to the PLC control system, and a motor of the stirring assembly (560) is started to mix the liquid and the solid;

s22, after a preset time, starting a liquid discharge pipe electromagnetic valve (531), and enabling the liquid-solid mixture at the bottom of the first separation tank assembly (500) to flow into the solid impurity cleaning device (800) through a separation tank liquid discharge pipe (530);

S23, coarse filtration is carried out on the solid-liquid mixture flowing in the step S22 through a filter screen plate (830), large-particle solids are left on the surface of the filter screen plate (830), liquid and small-particle solids enter a cavity formed by a filter cartridge assembly (820) of the cleaning device and a lower sealing plate (860) for secondary filtration, and the liquid flows through a corresponding groove on the upper surface of the lower sealing plate (860) through a cylinder filtrate hole (821) and flows out to a designated position through a lower sealing plate liquid outlet (863) from a shell liquid outlet pipe (811);

S24, when the height of the liquid and solid mixture at the bottom of the first separation tank assembly (500) reaches the preset low position of the liquid level sensor (550), the liquid level sensor (550) feeds back signals to the PLC control system, and the motor of the stirring assembly (560) and the electromagnetic valve (531) of the liquid discharge pipe are closed;

s25, repeating the steps from S21 to S24 until the gas lift of the corresponding gas well is completed;

s26, loosening the plum blossom handle screw (880), separating the plugging device (870) from the solid impurity cleaning device (800), and cleaning the plugging device (870);

And S27, fixing the cleaned plugging device (870) on the solid impurity cleaning device (800) by tightening the plum blossom handle screw (880).

8. The use of an interconnection gas lift device between gas wells according to any one of claims 1-6 for multiple gas well parallel connection, wherein the use is a multiple gas well parallel use method S3, the multiple gas well parallel use method S3 comprising the steps of:

S31, after the gas wells which are connected in parallel and need gas lift are determined, enabling valves of gas well feed pipelines which are connected in parallel to be in an open state, enabling valves of corresponding separation tank exhaust pipelines to be in an open state, and closing all valves of an interstage connection pipeline (900);

s32, enabling gas in a gas storage bottle group of the gas storage bypass pipeline (700) or gas in the mixed transmission pipeline (200) to flow into the pressurizing equipment (110) so as to pressurize the gas;

S33, the pressurized gas flows into a gas well feeding pipeline opened in the step S31 through a compressor exhaust pipeline (300), gas lift is carried out on the corresponding parallel gas wells at the same time, a solid-liquid-gas mixture after gas lift flows into a corresponding separation tank through the gas well discharging pipeline opened in the step S31, the gas is separated through the separation tank, the separated gas is discharged through a separation tank exhaust pipe assembly (600) in two ways, one way is depressurized through a depressurization valve (652) of the separation tank exhaust pipe assembly (600) and then is conveyed to a designated position through a mixing conveying pipeline (200), the other way is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline (700), and at the moment, the mixture of solid and liquid falls into the bottom of the separation tank.

9. The use of an interconnection gas lift apparatus between gas wells according to any one of claims 1-6 for a multi-gas well series, wherein the use is a multi-gas well series use S4, the multi-gas well series use S4 comprising the steps of:

s41, after the serial gas wells needing gas lift are determined, valves of a feed pipeline and a discharge pipeline of a first gas well connected in series are in an open state;

s42, enabling gas in a gas storage bottle group of the gas storage bypass pipeline (700) or gas in the mixed transmission pipeline (200) to flow into the pressurizing equipment (110) so as to pressurize the gas;

S43, enabling the pressurized gas to enter a feed pipeline of a first gas well of the series gas wells through a compressor exhaust pipeline (300), carrying out gas lifting on the first gas well, enabling a solid-liquid-gas mixture of the first gas well after gas lifting to enter a corresponding separation tank for separation, enabling the separated gas to enter a second gas well of the series gas well through an interstage pipeline, and carrying out gas lifting on a next gas well;

s44, after the gas lift of the last gas well of the series gas wells is finished, the solid-liquid-gas mixture enters a corresponding separation tank of the last gas well to be separated, the separated gas is discharged in two paths through a separation tank exhaust pipe assembly (600), one path of the separated gas is decompressed through a decompression valve (652) of the separation tank exhaust pipe assembly (600) and then is conveyed to a designated position through a mixed conveying pipeline (200), the other path of the separated gas is conveyed into a spare gas storage bottle group of a gas storage bypass pipeline (700), and at the moment, the mixture of the solid and the liquid falls into the bottom of the separation tank.