CN207776851U - A kind of gas well auxiliary takes liquid system - Google Patents

Abstract

The utility model provides an auxiliary liquid-carrying system for a gas well, which includes a gas well and a gas-liquid separation device. The wellhead of the gas well is plugged with a Christmas tree, and the gas-liquid separation device includes an input end, a first output end and a second output end. One end of the oil pipe extends into the gas well through the christmas tree, and the other end is connected to the input end. One end of a return pipe extends through the christmas tree into the oil and gas reservoir in the gas well. One end communicates with the first output end through a booster pump, and the return pipe is provided with a one-way valve that only allows air flow from the booster pump to the gas well, and the one-way valve is located at the booster pump Between the tree and the Christmas tree, the second output end is connected to a remote gas storage end through a gas transmission pipe to deliver gas to the gas storage end, and a liquid discharge pipe is provided at the lower end of the gas-liquid separation device. The liquid pipe is downwardly connected with a shut-off valve. Beneficial effects: low cost, wide applicability, capable of circular and continuous gas recovery and full separation of gas and liquid at the same time.

Description

A gas well auxiliary liquid carrying system

technical field

The utility model relates to the technical field of gas extraction engineering, in particular to an auxiliary liquid carrying system for a gas well.

Background technique

It has been discovered that in gas reservoirs and condensate gas reservoirs at home and abroad, whether they are conventional gas reservoirs, tight sandstone gas reservoirs or shale gas reservoirs, there will be different degrees of primary water or edge and bottom water, while in condensate gas reservoirs, In addition to formation water, there is also condensate oil that is reverse condensed by pressure reduction. With the development of a gas well, its gas production will decrease year by year, and the decline in gas production will lead to a decrease in the liquid-carrying capacity of the gas well, which will form liquid accumulation at the bottom of the well, increase the back pressure at the bottom of the well, and may further form in the reservoir near the wellbore. The phenomenon of water lock causes gas wells to shut down due to liquid accumulation. At present, in the development of gas reservoirs at home and abroad, the technical measures that can be taken for wellbore fluid accumulation include: foam drainage gas recovery, gas lift drainage gas recovery, jet pump drainage gas recovery, turbine drainage gas recovery and wellhead depressurization gas recovery after secondary Pressurized conveying and other processes. Among them, foam, gas lift, and jet pump drainage gas recovery processes have short duration, and are usually used to assist gas well activation after gas well operation, but cannot continue to assist liquid drainage for low-yield gas wells, and the gas-liquid mixture discharged by foam and gas lift requires secondary separation on the ground Or direct discharge, low economic benefit, relatively complex process. For the turbine drainage gas recovery process, it has the effect of continuously assisting liquid drainage, but because it only changes the gas-liquid distribution state at the bottom of the well to improve the liquid-carrying capacity of the gas well, its applicability is poor in low-production gas wells, and the auxiliary liquid-carrying capacity is limited. In addition, the secondary pressurized transportation process after wellhead depressurization and gas recovery effectively utilizes the pressure difference outside the pipeline, first reduces the wellhead pressure, and then re-reaches the required remote delivery pressure difference through the booster pump, thereby obtaining Additional wellhead pressure drop range, thereby prolonging gas well production and liquid carrying time, thereby improving ultimate recovery. This method is applicable to the production of various types of gas wells, but in the process of depressurization and boosting, the energy consumption is increasing, and its economic benefits are limited.

Utility model content

In view of this, the embodiment of the utility model provides an auxiliary liquid-carrying system for gas wells with low cost, good safety performance, wide application in the working environment, high degree of automation, continuous operation for a long time, and gas-liquid separation.

The utility model provides an auxiliary liquid-carrying system for a gas well, which includes a gas well and a gas-liquid separation device. The wellhead of the gas well is plugged with a Christmas tree, and the gas-liquid separation device includes an input end, a first output end and a second output end. One end of the tubing extends into the gas well through the christmas tree, the other end is connected to the input end, and one end of a return pipe extends through the christmas tree into the depth of the oil and gas reservoir in the gas well, The other end communicates with the first output end through the booster pump, and the return pipe is provided with a one-way valve that only allows air to flow from the booster pump to the gas well, and the one-way valve is located at the booster pump. Between the pressure pump and the christmas tree, the second output end is connected to a remote gas storage end through a gas transmission pipe to deliver gas to the gas storage end.

Further, the gas-liquid separation device also includes a third output end, one end of a safety pipe is connected to the third output end, and the other end is connected to the gas delivery pipe, the safety pipe is provided with an automatic air valve, a pressure The early warning device is arranged on the safety pipe between the gas-liquid separation device or the automatic gas valve and the third output end, and is used to monitor the air pressure in the gas-liquid separation device. The pressure early warning device is connected to automatically open when the pressure early warning device sends out an early warning signal so that the safety pipe communicates with the gas delivery pipe, so as to quickly output excess air flow and ensure the safety and effectiveness of the high pressure system.

Further, the gas-liquid separation device is provided with a hollow cavity, and a first separation chamber and a second separation chamber communicated with each other are arranged in the hollow cavity, and the chamber wall of the first separation chamber includes a separation baffle and is located at the The separation baffle is on the opposite sides and the two manifolds are bent or bent relative to the separation baffle. The separation baffle is provided with a number of diversion grooves, and the opposite ends of the diversion grooves respectively The direction where the manifold is located extends, the manifold is seamlessly connected to the inner wall of the hollow cavity and air holes are opened on the manifold, the input end communicates with the first separation chamber and faces the separation chamber. A baffle is provided, and the first output end, the second output end and the third output end communicate with the second separation chamber.

Further, an air flow passage is provided between the second separation chamber and the first separation chamber, one end of the air flow passage communicates with the air hole, and the other end communicates with the lower end of the second separation chamber, and the second separation chamber communicates with the air hole. The output end and the third output end are located at the upper end of the second separation chamber, and at least one filter screen is placed horizontally between the upper end and the lower end of the second separation chamber.

Further, the filter screen is an arc-shaped structure that arches upwards.

Further, the filter screen includes a fine screen and a coarse screen arranged up and down, and a liquid channel between the coarse screen and the fine screen, and the mesh diameter of the fine screen is smaller than that of the coarse screen. The two ends of the liquid channel are respectively connected to the bottom of the hollow cavity through a water pipe.

Further, the separation baffle is an arc structure, arching away from the direction where the input end is located.

Further, the inner wall of the hollow cavity is a waterproof layer, and the side of the waterproof layer away from the hollow cavity is provided with a thermal insulation layer, and a heating layer is provided between the waterproof layer and the thermal insulation layer, and a temperature sensor Extending into the hollow cavity is used to monitor the temperature in the hollow cavity to ensure a constant temperature environment and heating.

Further, the hollow cavity is also provided with a liquid accumulation area communicated with the lower ends of the first separation chamber and the second separation chamber, the lower end of the liquid accumulation area is provided with the drain pipe, and the liquid accumulation area The bottom of the liquid area is arc-shaped, and the drain pipe communicates with the lowest point of the liquid accumulation area.

Further, a liquid discharge pipe is provided at the lower end of the gas-liquid separation device, and a stop valve is connected downward to the liquid discharge pipe, and a liquid level sensor is provided in the liquid accumulation area, and the liquid level sensor is connected to the The cut-off valve is connected in communication or electrically, and is used to control the closing or opening of the stop valve according to the height of the liquid level in the liquid accumulation area.

Further, the oil pipe and the gas delivery pipe are equipped with a main valve that acts as a switch, and the oil pipe, the return pipe and the gas delivery pipe are all equipped with pressure sensors for monitoring the pressure in the corresponding pipeline. pressure, and these pressure sensors are all connected with the monitoring center for transmitting the pressure information monitored by it to the monitoring center, a flowmeter is located on the gas delivery pipe after the place where the safety tube communicates with the gas delivery pipeline, so The flowmeter is connected with the monitoring center.

The beneficial effect brought by the technical solution provided by the embodiment of the utility model is: in the gas well auxiliary liquid carrying system described in the utility model, the oil pipe transports the gas and liquid in the gas well to the The gas-liquid separation device, the gas-liquid separation device injects part of the gas-liquid separated gas into the gas well through the booster pump and the return pipe, and the other part of the gas is transported to the storage through the gas pipeline Gas end storage, the gas injected into the gas well and the gas produced in the formation use its expansion energy to carry out the bottom hole liquid during the process of producing the ground, and then enter the gas-liquid separation device through the oil pipe, so that the cycle, both It can control the amount of accumulated water in the gas well, continuously discharge the bottom fluid at the minimum cost, and realize continuous gas production. It has a wide range of applications and can effectively reduce the cost of production. At the same time, it can also realize gas-liquid separation and reduce The probability of gas pipeline blockage is the development trend of oil and gas fields in the future.

Description of drawings

Fig. 1 is the overall schematic diagram of the gas well auxiliary liquid carrying system of the utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the following will further describe the implementation of the utility model in conjunction with the accompanying drawings.

Please refer to Figure 1, the embodiment of the utility model provides an auxiliary liquid carrying system for gas wells, which is used to collect gas in the gas well 1, and control the amount of liquid accumulation in the gas well 1, so as to prevent the gas well from reducing production due to the increase of liquid accumulation Even stop production, mainly including gas well 1 and gas-liquid separation device 2.

The gas well 1 is a gas well, and the middle area or the lower end area in the gas well 1 has a gas-liquid mixture, and the gas-liquid mixture flows into the wellbore from the oil and gas reservoir 12 due to the pressure difference. Tree 11, one is to facilitate the extension of oil pipe 41 and return pipe 42 into the gas well 1, and the other is to prevent gas leakage in the gas well 1.

Please refer to FIG. 1, the gas-liquid separation device 2 includes an input end and three output ends, the three output ends are respectively a first output end, a second output end and a third output end, and the input end is far away from three one of the output settings. One end of an oil pipe 41 passes through the christmas tree 11 to communicate with the gas well 1, and the other end thereof is connected to the input end, and the end of the oil pipe 41 extends above the depth of the oil and gas reservoir 12 in the gas well 1, The oil pipe 41 is used to transport the liquid-carrying gas in the gas well 1 to the gas-liquid separation device 2 through the input end. One end of a return pipe 42 extends through the christmas tree 11 into the depth of the oil and gas reservoir 12 at the bottom of the gas well 1, and the other end communicates with the first output end through the booster pump 3, and the return pipe 42 uses To return part of the gas in the gas-liquid separation device 2 to the depth of the oil and gas reservoir 12 at the bottom of the gas well 1, in order to prevent the gas well 1 from clogging the return pipe 42 due to sand production, the return pipe 42 and The bottom of the gas well 1 and the well wall should keep an appropriate distance.

Please refer to Fig. 1, the second output end is connected to the remote gas storage end 5 through the gas transmission pipe 43 to transmit gas to the gas storage end 5, since the gas-liquid separation device 2 and the gas well 1 pass through the oil pipe 41 is directly connected, and there is no pressure-reducing device added therebetween, so the air pressure in the gas-liquid separation device 2 is high pressure, so the gas delivery pipe 43 can be used to deliver gas to the gas storage terminal 5 without adding other pressurization facilities. Gas, saving the consumption of using the pressurization facility itself and the work of the pressurization facility, which is conducive to energy saving and thus reduces the cost.

Please refer to Fig. 1, because the gas well 1 improves the performance of the reservoir in the gas well due to the improvement of the wellbore liquid accumulation or other sudden factors, the gas production of the gas well 1 will increase or suddenly increase, and the gas-liquid Under the condition that the actual gas discharge condition of the separation device 2 is constant, the gas input volume of the gas-liquid separation device 2 is greater than its output. If the exhaust volume of the gas-liquid separation device 2 is not increased at this time, the The gas-liquid separation device 2 is damaged or even exploded due to the sudden increase of the air pressure therein. The gas-liquid separation device 2 is provided with a safety pipe 44, one end of the safety pipe 44 is connected to the third output end, and the other end is connected to the gas delivery pipe 43, the safety pipe 44 is provided with an automatic gas valve 62, A pressure early warning device 71 is arranged on the gas-liquid separation device 2 or on the safety pipe 44 between the automatic gas valve 62 and the third output end, for monitoring the air pressure in the gas-liquid separation device 2, When the air pressure in the gas-liquid separation device 2 exceeds the early warning value, the pressure early warning device 71 sends out an early warning signal, and transmits the early warning signal to the automatic air valve 62, and the automatic air valve 62 is connected to the pressure The early warning device 62 is connected to automatically open when the pressure early warning device 62 sends out an early warning signal so that the safety pipe 44 communicates with the gas delivery pipe 43, so that the second output end and the third output end are exhausted together , increasing the exhaust volume per unit time of the gas-liquid separation device 2 to reduce the internal pressure of the gas-liquid separation device 2 to a safe range, cancel the warning, and automatically close the automatic gas valve 62. The lower end area of the gas-liquid separation device 2 has a liquid accumulation area, and the liquid accumulation area is provided with a liquid discharge pipe 45 , and the liquid discharge pipe 45 is connected downward with a shut-off valve 63 . Liquid is carried in the gas flow entering the gas-liquid separation device 2. After the gas flow enters the gas-liquid separation device 2, at least part of the liquid is separated from the gas flow, and the separated liquid gathers downward in the gas-liquid separation device 2. In the liquid accumulation area, the shut-off valve 63 is opened, and the liquid in the liquid accumulation area will be discharged from the liquid discharge pipe 45 . The bottom of the liquid accumulation area is arc-shaped, and the drain pipe 45 communicates with the lowest point of the liquid accumulation area. Preferably, a liquid level sensor is provided in the liquid accumulation area, and the liquid level sensor is communicatively connected or electrically connected with the stop valve 63 for controlling the liquid level sensor according to the height of the liquid level in the liquid accumulation area. The cut-off valve 63 is closed or opened. That is: when the liquid level sensor detects that the liquid level in the liquid accumulation area reaches or exceeds the set upper limit height, the cut-off valve 63 is opened to discharge liquid, so that the liquid level in the liquid accumulation area descending; when the liquid level sensor detects that the liquid level in the liquid accumulating area drops to the set lower limit height, the cut-off valve 63 is closed to stop the liquid discharge. Moreover, the liquid level sensor is connected with the monitoring center, and transmits the real-time situation of the liquid level in the liquid accumulation area to the monitoring center, so as to facilitate monitoring.

It can be seen from the above that after the airflow entering the gas-liquid separation device 2 is subjected to gas-liquid separation treatment by the gas-liquid separation device 2, a part of the processed airflow will be transported to the gas storage end 5 through the second output end While being stored by the gas storage end 5, a part of the processed air flow will enter the booster pump 3 through the first output port, and after being pressurized by the booster pump 3, it will flow back through the return pipe 42 to the depth of the oil and gas reservoir 12 at the bottom of the gas well 1 . Since the gas flow entering the gas-liquid separation device 2 has frictional energy loss between the gas flow and the pipeline during the production and return process, before the gas flow returns to the gas well 1, it should be properly pressurized so that its air pressure is greater than or It is equal to the air pressure in the gas well, so as to realize the effective circulation of gas and achieve the purpose of assisting liquid carrying.

Please refer to Fig. 1, in order to protect the booster pump 3 and the gas-liquid separation device 2, prevent the gas well 1 from suddenly increasing the air pressure greater than the output pressure of the booster pump 3, so that the air flow from the return pipe 42 flows back to the booster pump 3 and the gas-liquid separation device 2, resulting in partial damage to the equipment and a reduction in the gas-liquid separation effect, and the return pipe 42 between the booster pump 3 and the gas well 1 There is a one-way valve 64 which only allows gas flow from the booster pump 3 to the gas well 1 .

Please refer to FIG. 1 , when the liquid in the gas-liquid separation device 2 solidifies, the gas-liquid separation function of the gas-liquid separation device 2 may be reduced or even fail, thereby affecting the gas recovery rate of the gas well 1 . In order to prevent the liquid in the gas-liquid separation device 2 from solidifying due to the decrease in air temperature due to climate or seasonal changes, the gas-liquid separation device 2 is provided with an insulating layer, and the inner wall of the gas-liquid separation device is a waterproof layer. The thermal insulation layer is located on the side of the waterproof layer away from the hollow cavity, and a heating layer is provided between the thermal insulation layer and the waterproof layer, and enters into the gas-liquid separation device 2 through the input end. The air flow is accommodated in the hollow cavity, and the temperature in the hollow cavity is roughly equal to the temperature in the gas well 1 through the insulation layer and the heating layer. A temperature sensor 21 is installed on the gas-liquid separation device 2 for monitoring the temperature in the hollow cavity. The temperature sensor 21 is connected to the monitoring center and can transmit the temperature data it monitors to the monitoring center. , so as to realize remote monitoring.

Please refer to Fig. 1, the main valve 61 that acts as a switch is installed on the pipes such as the oil pipe 41 and the gas delivery pipe 43, for the sake of safety, one or more backup valves can be installed respectively, when the main valve 61 fails , the backup valve can be activated. The oil pipe 41, the return pipe 42 and the air pipe 43 are all equipped with pressure sensors 7 for monitoring the pressure in the corresponding pipelines, and these pressure sensors 7 are all connected with the monitoring center, so that it The monitored pressure data is transmitted to the monitoring center to realize remote monitoring and management. A flowmeter 46 is located on the gas pipeline after the connection between the safety pipe 44 and the gas pipeline 43, and the flowmeter is connected to the monitoring center. Preferably, the diameter of the oil pipe 41 is larger than that of the return pipe 42 .

The gas-liquid separation device 2 mainly includes a hollow cavity, and the hollow cavity has three interconnected chambers, which are respectively a first separation chamber, a second separation chamber and a liquid accumulation area. The first separation chamber and the second separation chamber are arranged side by side in the upper middle area of the hollow cavity, the liquid accumulation area is located in the lower end area of the hollow cavity, and the first separation chamber and the The lower end of the second separation chamber extends into the liquid accumulation area and communicates with the liquid accumulation area.

The chamber wall of the first separation chamber includes a separation baffle and two manifolds located on opposite sides of the separation baffle, the manifold is bent or bent relative to the separation baffle, and the manifold is opened with In the case of air holes, the manifold is seamlessly connected to the inner wall of the hollow cavity, or there is a gap for air flow to pass between the manifold and the inner wall of the hollow cavity. The air hole, that is, the air hole or the gap is the exhaust port of the first separation chamber. The separating baffle is provided with a plurality of diversion grooves, the opposite ends of the diversion grooves respectively extend in the direction of the corresponding manifold, the input end communicates with the first separation chamber and faces the The separation baffle is set, preferably, the input end is located at the upper end area of the first separation chamber, and the air hole is located at the lower area of the manifold but above the highest liquid level of the liquid accumulation area.

The separation baffle is a "匚"-shaped structure or a semi-enclosed structure similar to a "匚"-shaped structure. Preferably, the separation baffle is an arc-shaped structure that arches away from the direction where the input end is located. The groove is located inside the first separation chamber. After the high-pressure airflow injected from the input end enters the first separation chamber, the airflow first hits the separation baffle, and then passes along the separation baffle. The diversion groove travels to both sides at high speed until it collides with the manifold, and the airflow is either rebounded by the manifold to the separation baffle, or flows out of the first separation baffle from the air hole or the gap. room. The manifold can be a straight plate structure, or a curved plate structure, and there are obvious creases at the junction of the manifold and the separation baffle, or there are obvious creases at the junction of the manifold and the separation baffle The radius of curvature is obviously smaller than the radius of curvature of the separation baffle, so that the liquid in the airflow can converge along the junction or flow downwards along the manifold and flow into the liquid accumulation area.

An air flow passage is provided between the second separation chamber and the first separation chamber, one end of the air flow passage communicates with the air hole or the gap, and the other end communicates with the lower end of the second separation chamber. An output end, the second output end and the third output end are located at the upper end of the second separation chamber, and at least one filter screen is placed horizontally between the upper end and the lower end of the second separation chamber. Preferably, the filter screen is an upwardly arched arc structure, and the filter screen includes a fine screen and a coarse screen arranged up and down, and a liquid channel between the coarse screen and the fine screen, and the fine screen The mesh aperture is smaller than the mesh aperture of the coarse mesh, and the two ends of the liquid channel are connected to the liquid accumulation area through a water pipe respectively. In this embodiment, two filter meshes are taken as an example, but it is not limited thereto. Two said filter nets are set up and down. After the airflow flows out from the air holes or gaps, it enters the second separation chamber from the lower end area of the second separation chamber through the airflow channel, then flows upwards, passes through the two filter screens in turn, and finally flows from the output discharge. When the air flow passes through the coarse mesh and the fine mesh, due to the difference in gas-liquid gravity, it will be blocked by the coarse mesh and the fine mesh to a certain extent and a gas-liquid separation will occur. The pore diameter is smaller than the mesh aperture of the coarse mesh, so the fine mesh has a stronger resistance to the airflow, and the degree of gas-liquid separation is even greater, so part of the liquid in the airflow will be separated by the fine mesh and converge. in the liquid channel, and then flows along the liquid channel to both sides and finally flows into the corresponding water pipe, and is led into the liquid accumulation area by the water pipe. The separated liquid blocked by the coarse mesh gathers around the arc edge of the coarse mesh under its own gravity and finally flows down to the storage chamber along the wall of the second separation chamber. Liquid area

In the gas well auxiliary liquid carrying system described in the utility model, the oil pipe 41 transports the gas and liquid in the gas well 1 to the gas-liquid separation device 2 through the input end, and the gas-liquid separation device 2 Part of the gas flow after gas-liquid separation is injected back into the gas well 1 through the booster pump 3 and the return pipe 42, and the other part of the gas flow is transported to the gas storage end 5 for storage through the gas delivery pipe 43 and injected into the gas well. The gas in 1 and the gas produced in the formation use their expansion energy to carry out the bottomhole liquid during the surface production process, and then carry the liquid in the gas well 1 together with the newly produced natural gas to enter the gas well 1 through the tubing 41 The liquid separation device 2, circulating in this way, can not only control the amount of accumulated water in the gas well 1, continuously discharge the bottom fluid at the minimum cost, but also realize continuous gas production, and has a wide range of applications, which can effectively reduce the cost of production At the same time, it can realize gas-liquid separation and reduce the probability of gas pipeline blockage, which is the development trend of oil and gas fields in the future.

In this article, the orientation words such as front, rear, upper, and lower involved are defined by the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In the case of no conflict, the above-mentioned embodiments and features in the embodiments herein may be combined with each other.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A gas well auxiliary liquid carrying system, comprising a gas well and a gas-liquid separation device, characterized in that: the wellhead of the gas well is plugged with a Christmas tree, and the gas-liquid separation device includes an input end, a first output end and a second output end , one end of an oil pipe passes through the christmas tree and extends into the gas well, the other end of which is connected to the input end, and one end of a return pipe passes through the christmas tree and extends into the depth of the oil and gas reservoir in the gas well The other end communicates with the first output end through the booster pump, and the return pipe is provided with a one-way valve that only allows the gas flow from the booster pump to the gas well, and the one-way valve is located at the Between the booster pump and the Christmas tree, the second output end is connected to a remote gas storage end through a gas transmission pipe to deliver gas to the gas storage end. 2. The gas well auxiliary liquid carrying system according to claim 1, characterized in that: the gas-liquid separation device also includes a third output end, one end of a safety pipe is connected to the third output end, and the other end is connected to the third output end. An automatic air valve is provided on the safety pipe, and a pressure early warning device is arranged on the safety pipe between the gas-liquid separation device or the automatic air valve and the third output end for monitoring the The air pressure in the gas-liquid separation device, the automatic gas valve is connected to the pressure early warning device to automatically open when the pressure early warning device sends out an early warning signal so that the safety pipe communicates with the gas delivery pipe. 3. The gas well auxiliary liquid carrying system according to claim 2, characterized in that: the gas-liquid separation device is provided with a hollow cavity, and the hollow cavity is provided with a first separation chamber and a second separation chamber that communicate with each other, The chamber wall of the first separation chamber includes a separation baffle and two manifolds located on opposite sides of the separation baffle and bent or curved relative to the separation baffle, and several guides are arranged on the separation baffle. The opposite ends of the diversion groove respectively extend in the direction where the corresponding manifold is located, the manifold is seamlessly connected with the inner wall of the hollow cavity, and air holes are opened on the manifold, so The input end communicates with the first separation chamber and is arranged facing the separation baffle, and the first output end, the second output end and the third output end communicate with the second separation chamber. 4. The gas well auxiliary liquid carrying system according to claim 3, characterized in that: an air flow channel is provided between the second separation chamber and the first separation chamber, and one end of the air flow channel communicates with the air hole, The other end communicates with the lower end of the second separation chamber, the second output end and the third output end are located at the upper end of the second separation chamber, and at least one filter screen is placed horizontally on the upper end of the second separation chamber and the lower end. 5. The gas well auxiliary liquid-carrying system according to claim 4, characterized in that: the filter screen is an arc-shaped structure arched upwards, and the filter screen includes a fine screen and a coarse screen arranged up and down, and a A liquid passage between the coarse mesh and the fine mesh, the mesh aperture of the fine mesh is smaller than the mesh aperture of the coarse mesh, and the two ends of the liquid passage are respectively connected to the bottom of the hollow cavity through a water pipe . 6. The gas well auxiliary liquid carrying system according to claim 3, characterized in that: the separation baffle is an arc structure, arched away from the direction where the input end is located. 7. The gas well auxiliary liquid-carrying system as claimed in claim 3, characterized in that: the inner wall of the hollow cavity is a waterproof layer, and the waterproof layer is provided with a thermal insulation layer on the side far from the hollow cavity, and on the waterproof layer A heating layer is arranged between the insulation layer and the insulation layer, and a temperature sensor extends into the hollow cavity for monitoring the temperature in the hollow cavity. 8. The gas well auxiliary liquid carrying system according to claim 3, characterized in that: the lower end of the gas-liquid separation device is provided with a drain pipe, and the drain pipe is connected downward with a stop valve, and the hollow cavity is also A liquid accumulation area communicated with the lower ends of the first separation chamber and the second separation chamber is provided, the liquid accumulation area is provided with the drain pipe at the lower end, and the bottom of the liquid accumulation area is arc-shaped, The drain pipe communicates with the lowest point of the liquid accumulation area. 9. The gas well auxiliary liquid-carrying system according to claim 8, characterized in that: a liquid level sensor is provided in the liquid accumulation area, and the liquid level sensor is communicatively or electrically connected with the shut-off valve for The closing or opening of the shut-off valve is controlled according to the height of the liquid level in the liquid accumulation area. 10. The gas well auxiliary liquid-carrying system according to claim 2, characterized in that: said oil pipe and said gas delivery pipe are equipped with a main valve that acts as a switch, and said oil pipe, said return pipe and said delivery pipe Pressure sensors are installed on the air pipes to monitor the pressure in the corresponding pipelines, and these pressure sensors are connected to the monitoring center for transmitting the monitored pressure information to the monitoring center. A flowmeter is located between the safety pipe and the monitoring center. On the gas pipeline after the connection point of the gas pipeline, the flow meter is connected to the monitoring center.