阅读说明：本技术 一种泡沫排水采气井井口气动注销一体化系统 (Pneumatic logging-off integrated system for wellhead of foam drainage gas recovery well ) 是由 王振坤 黄新武 于 2021-07-13 设计创作，主要内容包括：一种泡沫排水采气井井口气动注销一体化系统,包括动力系统和泵注系统,所述动力系统采用采气井井口或生产管线的气、水流动的压能或动能为泵注系统提供动力；所述泵注系统由动力系统驱动,将泵注系统的储液罐内的起泡剂或消泡剂药液泵入采气井口的油套环空或生产管线；所述泵注系统的储液罐与生产管线接触或一体式设置,利用生产管线热能对储液罐加温。(A pneumatic logging-off integrated system for a wellhead of a foam drainage gas recovery well comprises a power system and a pumping system, wherein the power system supplies power to the pumping system by adopting pressure energy or kinetic energy of gas and water flowing of the wellhead of the gas recovery well or a production pipeline; the pump injection system is driven by a power system, and a foaming agent or a defoaming agent liquid medicine in a liquid storage tank of the pump injection system is pumped into an oil sleeve annulus or a production pipeline of a gas production wellhead; the liquid storage tank of the pumping system is in contact with the production pipeline or integrally arranged, and the heat energy of the production pipeline is utilized to heat the liquid storage tank.)

1. The utility model provides a pneumatic integration system of logging off of foam drainage gas recovery well head, includes driving system and pump system, its characterized in that:

the power system adopts pressure energy or kinetic energy of gas and water flowing of a gas production well mouth or a production pipeline to provide power for the pumping system;

the pump injection system is driven by a power system, and a foaming agent or a defoaming agent liquid medicine in a liquid storage tank of the pump injection system is pumped into an oil sleeve annulus or a production pipeline of a gas production wellhead;

the liquid storage tank of the pumping system is in contact with the production pipeline or integrally arranged, and the heat energy of the production pipeline is utilized to heat the liquid storage tank.

2. The system of claim 1 for the pneumatic logging-off of the wellhead of the foam drainage gas recovery well is characterized in that:

the power system comprises a pneumatic-hydraulic motor, a speed reducer and a hydraulic pump, wherein an output shaft of the pneumatic-hydraulic motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with a hydraulic pump shaft;

the input and output ends of the hydraulic oil of the hydraulic pump are connected with the hydraulic oil input and output ends of a hydraulic motor of the pumping system through a hydraulic pipeline;

the high-pressure end of the air-water motor is connected with a gas production tree test port of a gas production well mouth or is connected with a production pipeline closure gate upstream bypass, and exhausted gas and water after passing through the air-water motor are connected with a gas nozzle sleeve of the gas production well mouth or the production pipeline closure gate downstream to flow back to the production pipeline.

3. The pneumatic logging-off integrated system for the wellhead of the foam drainage gas recovery well is characterized in that:

the pump injection system comprises a foaming pump assembly, a defoaming pump assembly and a foaming and defoaming agent liquid storage tank;

the foaming pump assembly and the defoaming pump assembly each comprise: the hydraulic motor, the program control speed regulator and the hydraulic drive liquid injection pump; the power output shaft of the hydraulic motor is connected with the hydraulic drive liquid injection pump shaft through the program control speed regulator;

the foaming agent hydraulic motor and the defoaming agent hydraulic motor are connected in series and are connected with the input and output ports of hydraulic oil of the hydraulic pump through an oil inlet pipeline and an oil return pipeline.

4. The system of claim 1 for the pneumatic logging-off of the wellhead of the foam drainage gas recovery well is characterized in that:

the power system and the pumping system are integrated components without hydraulic oil;

the integral type driving system and the pump system subassembly that does not have hydraulic oil include: a gas-water motor, a program-controlled speed reduction/speed regulator and a gas-water driven liquid injection pump,

the output shaft of the air-water motor is connected with the input shaft of the program control speed reducer/governor; and the output shaft of the program control speed reduction/speed regulator is connected with a gas-water driven liquid injection pump shaft.

5. The system of claim 4 for the pneumatic logging-off of the wellhead of the gas recovery well with foam drainage, which is characterized in that:

the gas-water driven liquid injection pump comprises a foaming agent pump and a defoaming agent pump, and a gas-water motor of the foaming agent pump is connected with a gas-water motor of the defoaming agent pump in series;

the high-pressure end of the gas-water motor is connected with a gas production tree test port or is connected with an upstream bypass of a production pipeline cut-off gate, and exhausted gas and water passing through the gas-water motor flow back to the production pipeline through a gas nozzle sleeve of a gas production well mouth or the downstream of the production pipeline cut-off gate.

Technical Field

The invention belongs to the technical field of foam drainage gas production, and particularly relates to a pneumatic logging-off integrated system for a wellhead of a foam drainage gas production well.

Background

Foam drainage gas recovery is an injection drainage process by adding surfactant into the well. Surfactants are also known as foaming agents. Injecting a certain amount of foaming agent into the well, and after the accumulated water at the well bottom contacts with the foaming agent, producing a large amount of low-density water-containing foam by means of the stirring of natural gas flow, and carrying the water-containing foam to the ground along with the gas flow from the well bottom, thereby achieving the purpose of removing the accumulated water at the well bottom.

Meanwhile, after the natural gas carrying the bubble flow rises to the ground, the normal production is influenced in order to prevent the bubbles from being brought into ground process equipment. Before the pipeline is added into the equipment, a defoaming agent is injected into the pipeline to remove foams.

The conventional foam drainage gas recovery well has the following common modes:

firstly, the power electricity drives the electric pump to inject, and has the defects that: energy consumption and potential safety hazard exist, and the wellhead generally has no power electricity;

wind-solar complementary power supply drives the electric pump to inject, and has the defects that: the system is complex, the power is unstable, and the equipment cost is high;

(iii) the overhead tank of the well head flows automatically, and has disadvantages: the large high-pressure container is elevated, when the medicine is added into the tank, high-pressure pump injection or emptying is needed (natural gas loss exists), the operation is complex, heat is not preserved (anti-freezing liquid medicine is needed in winter, the cost is high), and the safety problem exists.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a pneumatic logging-off integrated system for a wellhead of a foam drainage gas recovery well.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pneumatic logging-off integrated system for a wellhead of a foam drainage gas recovery well comprises a power system and a pumping system, wherein the power system supplies power to the pumping system by adopting pressure energy or kinetic energy of gas and water flowing of the wellhead of the gas recovery well or a production pipeline; the pump injection system is driven by a power system, and a foaming agent or a defoaming agent liquid medicine in a liquid storage tank of the pump injection system is pumped into an oil sleeve annulus or a production pipeline of a gas production wellhead; the liquid storage tank of the pumping system is in contact with the production pipeline or integrally arranged, and the heat energy of the production pipeline is utilized to heat the liquid storage tank.

The power system comprises an air-water motor, a speed reducer and a hydraulic pump, wherein an output shaft of the air-water motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with a hydraulic pump shaft;

the input and output ends of the hydraulic oil of the hydraulic pump are connected with the hydraulic oil input and output ends of a hydraulic motor of the pumping system through a hydraulic pipeline;

the high-pressure end of the air-water motor is connected with a gas production tree test port of a gas production well mouth or is connected with a production pipeline closure gate upstream bypass, and exhausted gas and water after passing through the air-water motor are connected with a gas nozzle sleeve of the gas production well mouth or the production pipeline closure gate downstream to flow back to the production pipeline.

Furthermore, the pumping system comprises a foaming pump assembly, a defoaming pump assembly and a foaming and defoaming agent liquid storage tank; the foaming pump assembly and the defoaming pump assembly each comprise: the hydraulic motor, the program control speed regulator and the hydraulic drive liquid injection pump; the power output shaft of the hydraulic motor is connected with the hydraulic drive liquid injection pump shaft through the program control speed regulator; the foaming agent hydraulic motor and the defoaming agent hydraulic motor are connected in series and are connected with the input and output ports of hydraulic oil of the hydraulic pump through an oil inlet pipeline and an oil return pipeline.

In addition, the power system and the pumping system are integrated components without hydraulic oil; the integral type driving system and the pump system subassembly that does not have hydraulic oil include: the air-water motor, the program-controlled speed reduction/speed regulator and the air-water drive liquid injection pump are connected, and an output shaft of the air-water motor is connected with an input shaft of the program-controlled speed reduction/speed regulator; and the output shaft of the program control speed reduction/speed regulator is connected with a gas-water driven liquid injection pump shaft.

Further, the gas-water driven liquid injection pump comprises a foaming agent pump and a defoaming agent pump, wherein a gas-water motor of the foaming agent pump is connected with a gas-water motor of the defoaming agent pump in series; the high-pressure end of the gas-water motor is connected with a gas production tree test port or is connected with an upstream bypass of a production pipeline cut-off gate, and exhausted gas and water passing through the gas-water motor flow back to the production pipeline through a gas nozzle sleeve of a gas production well mouth or the downstream of the production pipeline cut-off gate.

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

1. the invention has simple structure, overcomes the defects of dynamic electricity, wind-solar complementary power supply and well head overhead tank self-flow mode adopted in the prior art; meanwhile, pressure energy or kinetic energy of well head air and water flow is used as power of a pump injection system (in the prior art, the energy is usually lost when closure is carried out at a well head or a station, and is not utilized, so that energy waste is caused), and the energy waste is avoided by skillful utilization.

2. The heat energy of water produced by a natural gas wellhead is utilized to heat a foaming agent tank and a defoaming agent tank.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic diagram of a partially labeled structure in embodiment 1 of the present invention

FIG. 3 is a schematic structural view of example 2 of the present invention;

fig. 4 is a schematic diagram of a local labeling structure in embodiment 2 of the present invention.

In the figure, a gas production tree 1, a power system 2, a pump injection system 3, a production pipeline 4, a hydraulic oil pipeline 5, a defoaming agent injection pipe 6 and a foaming agent injection pipe 7 are arranged; the device comprises an air nozzle sleeve 11, an air-water motor 21, a program control speed reducer 22, a hydraulic pump 23, a hydraulic motor 31, a program control speed regulator 32, a hydraulic drive liquid injection pump 33, a defoaming agent liquid storage tank 34 and a foaming agent liquid storage tank 35; an integrated power system and pump injection system component 8, a gas-water input and output pipe 9, a gas-water motor 83, a program control speed reduction/speed regulator 84 and a gas-water drive liquid injection pump 85.

Detailed Description

Example 1:

as shown in fig. 1-2, a pneumatic logging-off integrated system for a wellhead of a foam drainage gas recovery well comprises a power system 2 and a pumping system 3, wherein the power system 2 adopts pressure energy or kinetic energy of gas and water flowing of the wellhead of the gas recovery well or a production pipeline to provide power for the pumping system 3; the pump injection system 3 is driven by the power system 2, and a foaming agent or a defoaming agent liquid medicine in a liquid storage tank of the pump injection system 3 is pumped into an oil sleeve annulus or a production pipeline 4 of a gas production wellhead. The invention has simple structure, overcomes the defects of dynamic electricity, wind-solar complementary power supply and well head overhead tank self-flow mode adopted in the prior art; meanwhile, pressure energy or kinetic energy of well head air and water flow is used as power for the pumping system 3 (in the prior art, the energy is usually lost when the well head or the station cuts off the flow and is not utilized, so that energy waste is caused), and the energy waste is avoided by skillful utilization. The liquid storage tank of the pumping system 3 is in contact with the production pipeline 4 or integrally arranged, and the heat energy of the production pipeline 4 is utilized to heat the liquid storage tank. The foaming agent storage tank 35 and the defoaming agent storage tank 34 are arranged close to or around the production pipeline, or the foaming agent storage tank 35 and the defoaming agent storage tank 34 can be heated by utilizing the heat energy of the production pipeline 4 in other forms.

The pumping system 3 comprises a foaming pump assembly, a defoaming pump assembly, a foaming agent storage tank 35 and a defoaming agent storage tank 34; the foaming pump assembly and the defoaming pump assembly each comprise: a hydraulic motor 31, a program control speed regulator 32 and a hydraulic drive liquid injection pump 33; the power output shaft of the hydraulic motor 31 is connected with the shaft of a hydraulic drive liquid injection pump 33 through a program control speed regulator 32; the foaming agent hydraulic motor 31 is connected with the defoaming agent hydraulic motor 31 in series and is connected with the input and output ports of the hydraulic oil of the hydraulic drive liquid injection pump 33 through the oil inlet oil return pipeline 5.

The power system 2 comprises an air-water motor 21, a speed reducer 22 and a hydraulic pump 23, wherein an output shaft of the air-water motor 21 is connected with an input shaft of the speed reducer 22, and an output shaft of the speed reducer 22 is connected with a shaft of the hydraulic pump 23; the input and output ends of the hydraulic oil of the hydraulic pump 23 are connected with the hydraulic oil input and output ends of a hydraulic motor 31 of the pumping system 3 through a hydraulic pipeline 5; the high-pressure end of the air water motor 21 is connected with a gas production tree 1 test port of a gas production well mouth or is connected with a production pipeline 4 closure gate upstream bypass, exhausted gas and water after passing through the air water motor 21 are connected with an air nozzle sleeve 11 of the gas production well mouth or the production pipeline 4 closure gate downstream, and flow back to the production pipeline 4. And a hydraulic oil seal is adopted, so that the risk of natural gas leakage is avoided.

When the device is used, the pressure energy or kinetic energy of gas and water flowing of a gas production well mouth or a production pipeline 4 drives the gas-water motor 21 to work, the gas-water motor 21 drives the speed reducer 22 and the hydraulic pump 23 to work, the hydraulic pump 23 works to drive the hydraulic motor 31 of the pump injection system 3 to work, the hydraulic motor 31 drives the program-controlled speed reducer 22 and the hydraulic drive liquid injection pump 33 to work, and the hydraulic drive liquid injection pump 33 pumps foaming and defoaming agent liquid medicine in the foaming agent liquid storage tank 35 and the defoaming agent liquid storage tank 34 into an oil jacket annular space or the production pipeline 4 of the gas production well mouth through the defoaming agent injection pipe 6 and the foaming agent injection pipe 7. The high-pressure end of the air-water motor 21 is connected with a gas production tree 1 test port of a gas production well mouth or is connected with a production pipeline closure gate upstream bypass, exhausted gas and water after passing through the air-water motor 21 are connected with an air nozzle sleeve 11 of the gas production well mouth or the production pipeline closure gate downstream, the production pipeline is refluxed, and the heat energy of the production pipeline 4 is utilized to heat the liquid storage tank.

Example 2:

as shown in fig. 3-4, a pneumatic logging-off integrated system for a wellhead of a foam drainage gas recovery well comprises a power system 2 and a pumping system 3, wherein the power system 2 supplies power to the pumping system 3 by using pressure energy or kinetic energy of gas and water flowing at the wellhead of the gas recovery well or a production pipeline; the pump injection system 3 is driven by the power system 2, and a foaming agent or a defoaming agent liquid medicine in a liquid storage tank of the pump injection system 3 is pumped into an oil sleeve annulus or a production pipeline of a gas production wellhead. The invention has simple structure, overcomes the defects of dynamic electricity, wind-solar complementary power supply and well head overhead tank self-flow mode adopted in the prior art; meanwhile, pressure energy or kinetic energy of well head air and water flow is used as power for the pumping system 3 (in the prior art, the energy is usually lost when the well head or the station cuts off the flow and is not utilized, so that energy waste is caused), and the energy waste is avoided by skillful utilization. The liquid storage tank of the pumping system 3 is in contact with the production pipeline or is integrally arranged, and the heat energy of the production pipeline is utilized to heat the liquid storage tank. The foamer and defoamer reservoir 34 is disposed proximate or surrounding the production tubing, or may be otherwise heated using the heat energy of the production tubing.

In addition, the power system 2 and the pumping system 3 are integrated components without hydraulic oil; the hydraulic oil-free power system and the pump injection system component 8 are adopted, so that the structure is simple and the operation is easy. The integrated power system and pump injection system assembly 8 without hydraulic oil comprises: the gas-water motor 83, the program control speed reduction/speed regulator and the gas-water drive liquid injection pump 85, wherein the output shaft of the gas-water motor 83 is connected with the input shaft of the program control speed reduction/speed regulator 84; the output shaft of the program control speed reducing/regulating device 84 is connected with the shaft of an air-water driving liquid injection pump 85. The gas-water driven liquid injection pump 85 comprises a foaming agent pump and a defoaming agent pump, and a gas-water motor of the foaming agent pump is connected with a gas-water motor of the defoaming agent pump in series; the high-pressure end of the gas-water motor is connected with a test port of the gas production tree 1 or connected with an upstream bypass of a production pipeline closure gate, and exhausted 'gas and water' passing through the gas-water motor flows back to the production pipeline with an air nozzle sleeve 11 of a gas production well mouth or the downstream of the production pipeline 4 closure gate.

When the device is used, pressure energy or kinetic energy of gas and water flowing of a gas production well mouth or a production pipeline drives the air-water motor 83 to work through the air-water input and output pipe 9, the air-water motor 83 drives the program-controlled speed reduction/speed regulation device 84 and the air-water driven injection pump 85 to work, and the air-water driven injection pump 85 pumps foaming and defoaming agent liquid in the foaming agent liquid storage tank 35 and the defoaming agent liquid storage tank 34 into an oil sleeve annulus or the production pipeline 4 of the gas production well mouth through the defoaming agent injection pipe 6 and the foaming agent injection pipe 7. The high-pressure end of the air-water motor 83 is connected with a gas production tree 1 test port of a gas production well head or is connected with a production pipeline cut-off gate upstream bypass, exhaust gas and water passing through the air-water motor 83 are connected with an air nozzle sleeve 11 of the gas production well head or the production pipeline cut-off gate downstream, flow back to the production pipeline, and the production pipeline heat energy is used for heating the liquid storage tank.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.