CN220599779U - Plunger gas lift drainage gas production device - Google Patents

Abstract

The utility model discloses a plunger gas-lift drainage gas production device which comprises an oil well collecting pipe, wherein the upper end of the oil well collecting pipe is connected with a blowout prevention assembly, the blowout prevention assembly comprises a blowout prevention pipe, the blowout prevention pipe is fixedly connected with the oil well collecting pipe through a connecting flange, and a gas-lift plunger is arranged in the blowout prevention pipe. The upper end of the lubricator is externally connected with the outer sleeve through threaded rotation, the inner sleeve is connected with the upper end of the lubricator through threaded rotation, the connection strength of the upper end of the lubricator and the end barrel can be improved, the tightness of the upper end of the lubricator is improved, the rising kinetic energy of the lifting gas plunger is converted into the heat energy of gas in the inner air cavity and the outer air cavity, the vertical impact of the lifting gas plunger on the whole end barrel structure is reduced, the distance of the upper top in the upper buffer baffle can be represented by the scale, the pressure of the gas-liquid mixture in the oil well can be directly judged according to the distance, and the gas-liquid state in the oil well is judged.

Description

Plunger gas lift drainage gas production device

Technical Field

The utility model relates to the field of petroleum exploitation, in particular to a plunger gas lift drainage gas production device.

Background

In the oil and gas exploitation industry, a plunger gas lift technology is a drainage gas production technology for discharging liquid out of a shaft by utilizing the self energy of a gas well, the plunger is used as a mechanical interface between gas and liquid, and the plunger is pushed to periodically move up and down in an oil pipe by utilizing the gas produced by the gas well, so that the liquid produced by a stratum is periodically lifted to the ground, and the gas is produced. The plunger used as a gas-liquid interface can effectively prevent gas from channeling upwards and liquid from falling backwards, reduce the slipping effect of liquid in the process of running from the bottom of the well to the wellhead and improve the efficiency of lifting the liquid by the gas. The process is a mechanical drainage gas production mode, completely depends on the self energy of a gas well in the liquid discharge process, does not need any chemical agent to be added, does not need any external energy, has been widely applied to compact low-yield gas fields worldwide and has good effects.

Through retrieving, discovery prior art publication No. CN 213597933U discloses a plunger gas lift drainage gas production device, including gas-liquid input tube, fluid output tube, gas-liquid input tube intercommunication has first conveyer pipe and second conveyer pipe, is provided with pneumatic film valve between fluid output tube and the first conveyer pipe, is equipped with monitoring component on the gas-liquid input tube, is equipped with central controller in addition, and monitoring component is including locating the travel chamber in the gas-liquid input tube, and the sliding butt has the plunger in the travel chamber, and a plurality of liquid trapping monitoring traps are located to the travel chamber pipe wall.

Therefore, based on the above-mentioned retrieval and combine current gas lift drainage gas production device, the blowout prevention cover in the lubricator directly utilizes the screw thread rotation to install in the upper end of lubricator, the spring in it receives the impact force from the plunger, the spring is with the power transmission for blowout prevention and is exploded, long-time, directly with blowout prevention and is exploded, short service life, and only utilize the spring to cushion, take place the vibration easily, be unfavorable for gas-liquid emission, the gas-liquid gets into in the gap between plunger and the lubricator easily, inconvenient discharge, consequently, this application provides a plunger gas lift drainage gas production device.

Disclosure of Invention

The utility model aims to provide a plunger gas lift drainage gas production device, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a plunger gas lift drainage gas production device, includes the oil well collection pipe, the upper end of oil well collection pipe is connected with blowout preventer assembly, blowout preventer assembly includes the lubricator, lubricator passes through flange and oil well collection pipe fixed connection, be provided with the gas lift plunger in the lubricator, the upper end of lubricator is connected with the inner skleeve, the upper end fixedly connected with end section of thick bamboo of inner skleeve, be provided with buffer baffle in the inner skleeve, upper buffer baffle lower extreme fixedly connected with buffer spring, buffer spring's lower extreme fixedly connected with lower buffer baffle, the lower extreme integration of end section of thick bamboo is provided with the outer sleeve, the outer surface at the lubricator is installed through the screw thread rotation to the outer sleeve, the inner skleeve is installed in the upper end of lubricator through the screw thread rotation.

Further, an inner air cavity is arranged above the upper buffer baffle plate in the inner sleeve, an outer air cavity is arranged between the outer sleeve and the inner sleeve, a plurality of air holes are formed in the side wall of the inner sleeve, and the inner air cavity and the outer air cavity are communicated through the air holes.

Further, the upper end fixedly connected with scale of last buffering baffle, the vertical slidable mounting of upper end at end section of thick bamboo of scale, the scale upper end stretches out outside the end section of thick bamboo upper end.

Further, the air lifting plunger comprises a vertical cylinder, an upper piston cylinder and a lower piston cylinder, wherein the upper piston cylinder and the lower piston cylinder are integrally arranged at the upper end and the lower end of the vertical cylinder, the upper piston cylinder and the lower piston cylinder are respectively provided with a lower piston head in a telescopic manner, a vertical cylinder air cavity is arranged in the vertical cylinder, a plurality of rubber sleeves are fixedly sleeved on the outer surface of the vertical cylinder, an annular air cavity is arranged in the rubber sleeve, and the vertical cylinder is communicated with the vertical cylinder air cavity

Compared with the prior art, the utility model has the beneficial effects that:

1. the outer sleeve is connected to the outer end of the lubricator through screw threads in a rotating manner, the inner sleeve is connected to the inner end of the lubricator through screw threads in a rotating manner, so that the connection strength between the upper end of the lubricator and the end cylinder can be improved, and the tightness of the upper end of the lubricator is improved;

2. the kinetic energy of lifting the gas plunger is converted into the heat energy of the gas in the inner gas cavity and the outer gas cavity, so that the vertical impact of the gas plunger on the whole end cylinder structure is reduced, and the high-pressure gas in the inner gas cavity and the outer gas cavity is pressurized to the periphery;

3. the gas lifting plunger is propped up by the pressure of the gas-liquid mixture in the oil well and pushes the upper buffer baffle plate in the lubricator to move upwards, the scale can represent the distance of the upper top in the upper buffer baffle plate, and the gas lifting plunger can be directly judged to be stressed by the pressure of the gas-liquid mixture in the oil well according to the distance, so that the gas-liquid state in the oil well is judged;

4. the contracted upper piston head and the contracted lower piston head reduce the space in the vertical cylinder air cavity, and further increase the air pressure in the vertical cylinder air cavity and the annular air cavity communicated with the vertical cylinder air cavity, so that the annular air cavity is expanded outwards, the peripheral end of the annular air cavity is tightly abutted against the inner wall of the lubricator, the gas-liquid mixture in an oil well is reduced to enter the space between the vertical cylinder and the lubricator, the residue of liquid discharged in the oil well is reduced, the sealing effect of the gas lifting plunger is improved, and the practicability is high.

Drawings

FIG. 1 is a schematic view of a lubricator mounting structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a lubricator according to the present utility model;

FIG. 3 is a schematic view of a lift gas plunger according to the present utility model;

fig. 4 is a schematic cross-sectional view of a lift gas plunger according to the present utility model.

In the figure: 1. an oil well collection tube; 2. a blowout prevention assembly; 3. a connecting flange; 4. a gas lifting plunger; 5. lubricator; 6. a lower buffer baffle; 7. an outer sleeve; 8. an external air cavity; 9. an inner sleeve; 10. an end cylinder; 11. a ruler; 12. an inner air cavity; 13. air holes; 14. an upper buffer baffle; 15. a buffer spring; 16. a lower piston head; 17. a lower piston cylinder; 18. a vertical tube; 19. an annular air cavity; 20. a rubber sleeve; 21. an upper piston cylinder; 22. an upper piston head; 23. a vertical cylinder air cavity.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, a plunger gas lift drainage gas production device comprises an oil well collection tube 1, wherein the upper end of the oil well collection tube 1 is connected with a blowout prevention component 2, the blowout prevention component 2 comprises a blowout prevention tube 5, the blowout prevention tube 5 is fixedly connected with the oil well collection tube 1 through a connecting flange 3, a gas lift plunger 4 is arranged in the blowout prevention tube 5, the upper end of the blowout prevention tube 5 is connected with an inner sleeve 9, the upper end of the inner sleeve 9 is fixedly connected with an end tube 10, an upper buffer baffle 14 is arranged in the inner sleeve 9, the lower end of the upper buffer baffle 14 is fixedly connected with a buffer spring 15, the lower end of the buffer spring 15 is fixedly connected with a lower buffer baffle 6, the lower end of the end tube 10 is integrally provided with an outer sleeve 7, the outer sleeve 7 is rotatably arranged on the outer surface of the blowout prevention tube 5 through threads, the inner sleeve 9 is rotatably arranged in the upper end of the blowout prevention tube 5 through threads, an inner air cavity 12 is arranged above the upper buffer baffle 14 in the inner sleeve 9, an outer air cavity 8 is arranged between the outer sleeve 7 and the inner sleeve 9, a plurality of air holes 13 are formed in the side walls of the inner sleeve 9, the inner cavity 12 and the outer cavity 8 are communicated through the air holes 13, the lower end of the inner cavity 2 is fixedly connected with the blowout prevention tube 5 through the connecting flange 5, the upper end of the blowout prevention tube 5 is fixedly connected with the blowout prevention tube 5 through the upper end of the blowout prevention tube 5, the upper end is conveniently connected with the blowout prevention tube 5 through the upper end of the blowout prevention tube 5, the blowout prevention tube 1 is rotatably connected with the blowout prevention tube 5, and the upper end of the blowout prevention tube 5 through the upper end of the blowout prevention tube 1, and the upper end is conveniently by the upper end of the blowout prevention tube 3;

when the lifting gas plunger 4 is pushed up by the gas-liquid mixture, the lifting gas plunger 4 is pushed up into the lubricator 5, the upper end of the lifting gas plunger 4 is abutted against the lower buffer baffle 6, and the buffer spring 15 and the upper buffer baffle 14 are pushed to move upwards in the lubricator 5, the high-pressure gas in the inner air cavity 12 above the upper buffer baffle 14 is subjected to the pressure from the upper buffer baffle 14, the high-pressure gas in the inner air cavity 12 is sent into the outer air cavity 8 from the air hole 13, the buffer spring 15 is compressed in the process, the kinetic energy of lifting the lifting gas plunger 4 is converted into the heat energy of the gas in the inner air cavity 12 and the outer air cavity 8, the vertical impact of the lifting gas plunger 4 on the whole structure of the end cylinder 10 is reduced, and the high-pressure gas in the inner air cavity 12 and the outer air cavity 8 is pressed towards the periphery, so that the end cylinder 10 connected with the upper end of the lubricator 5 is not subjected to too much impact from the lifting gas plunger 4, the service life of the end cylinder 10 is prolonged, the lifting gas plunger 4 is buffered by the compressed gas spring 15, the kinetic energy of lifting gas plunger 4 is converted into the heat energy of the gas in the process, and the mechanical loss of the air is not stable, and the air is not lost to the lubricator 5.

In the utility model, the upper end of the upper buffer baffle 14 is fixedly connected with the scale 11, the scale 11 is vertically and slidably arranged at the upper end of the end cylinder 10, the upper end of the scale 11 extends out of the upper end of the end cylinder 10, the lifting gas plunger 4 is jacked up by pressure from gas-liquid mixture in an oil well, the upper buffer baffle 14 in the lubricator 5 is pushed to move upwards, the scale 11 can represent the jacking distance in the upper buffer baffle 14, and the pressure of the gas-liquid mixture in the oil well on the lifting gas plunger 4 can be directly judged according to the pressure, so that the gas-liquid state in the oil well is judged.

Example 2: referring to fig. 3 and 4, the distinguishing feature of this embodiment and embodiment 1 is that the lift plunger 4 includes a vertical tube 18 and an upper piston tube 21 and a lower piston tube 17 integrally provided at the upper and lower ends thereof, a lower piston head 16 is telescopically mounted in each of the upper piston tube 21 and the lower piston tube 17, a vertical tube air chamber 23 is provided in the vertical tube 18, a plurality of rubber sleeves 20 are fixedly sleeved on the outer surface of the vertical tube 18, an annular air chamber 19 is provided in the rubber sleeves 20, the vertical tube 18 and the vertical tube air chamber 23 are communicated, when the lift plunger 4 is pushed up by a gas-liquid mixture into the lubricator 5, the lower end of the lift plunger 4 receives a pressure from a gas-liquid in the oil well, and the upper end of the lift plunger 4 receives a reaction force from a lower buffer baffle 6, so that the upper piston head 22 and the lower piston head 16 at the upper and lower end of the lift plunger 4 are pushed into the upper piston tube 21 and the lower piston tube 17, respectively, because the vertical tube 23 in the vertical tube 18 is filled with a high-pressure air chamber 19, the upper piston tube 22 and the vertical tube 18 are tightly connected, and the annular air chamber 23 is further reduced, and the pressure of the annular air chamber is further reduced, and the pressure of the air chamber is further expanded up and the annular air chamber is further expanded up by the annular air chamber 23 and the annular air chamber is further expanded up and the annular air chamber 19, and the pressure is further expanded up and the pressure chamber is further expanded up and the air chamber and the air chamber is sealed by the air chamber 19.

The working principle of the utility model is as follows: when the lifting gas plunger 4 is pushed up by the gas-liquid mixture, the lifting gas plunger 4 is pushed up into the lubricator 5, the upper end of the lifting gas plunger 4 is abutted against the lower buffer baffle 6, and the buffer spring 15 and the upper buffer baffle 14 are pushed to move upwards in the lubricator 5, the high-pressure gas in the inner air cavity 12 above the upper buffer baffle 14 is subjected to the pressure from the upper buffer baffle 14, the high-pressure gas in the inner air cavity 12 is sent into the outer air cavity 8 from the air hole 13, the buffer spring 15 is compressed in the process, the kinetic energy of lifting the lifting gas plunger 4 is converted into the heat energy of the gas in the inner air cavity 12 and the outer air cavity 8, the vertical impact of the lifting gas plunger 4 on the whole structure of the end cylinder 10 is reduced, and the high-pressure gas in the inner air cavity 12 and the outer air cavity 8 is pressed towards the periphery, so that the end cylinder 10 connected with the upper end of the lubricator 5 is not subjected to too much impact from the lifting gas plunger 4, the service life of the end cylinder 10 is prolonged, the lifting gas plunger 4 is buffered by the compressed gas spring 15, the kinetic energy of lifting gas plunger 4 is converted into the heat energy of the gas in the process, and the mechanical loss of the air is not stable, and the air is not lost to the lubricator 5.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (4)

1. The utility model provides a plunger gas lift drainage gas production device, includes oil well collection pipe (1), its characterized in that: the anti-blowout component (2) is connected to the upper end of the oil well collecting pipe (1), the anti-blowout component (2) comprises an anti-blowout pipe (5), the anti-blowout pipe (5) is fixedly connected with the oil well collecting pipe (1) through a connecting flange (3), an air lifting plunger (4) is arranged in the anti-blowout pipe (5), an inner sleeve (9) is connected to the upper end of the anti-blowout pipe (5), an end cylinder (10) is fixedly connected to the upper end of the inner sleeve (9), an upper buffer baffle (14) is arranged in the inner sleeve (9), a buffer spring (15) is fixedly connected to the lower end of the upper buffer baffle (14), an outer sleeve (7) is integrally arranged at the lower end of the end cylinder (10), and the outer sleeve (7) is rotatably arranged on the outer surface of the anti-blowout pipe (5) through threads, and the inner sleeve (9) is rotatably arranged in the upper end of the anti-blowout pipe (5) through threads.

2. The plunger gas lift drainage gas production device of claim 1, wherein: an inner air cavity (12) is arranged above an upper buffer baffle (14) in the inner sleeve (9), an outer air cavity (8) is arranged between the outer sleeve (7) and the inner sleeve (9), a plurality of air holes (13) are formed in the side wall of the inner sleeve (9), and the inner air cavity (12) is communicated with the outer air cavity (8) through the air holes (13).

3. The plunger gas lift drainage gas production device of claim 2, wherein: the upper end of the upper buffer baffle (14) is fixedly connected with a scale (11), the scale (11) is vertically and slidably arranged at the upper end of the end cylinder (10), and the upper end of the scale (11) extends out of the upper end of the end cylinder (10).

4. A plunger gas lift drainage gas production apparatus as claimed in claim 3 wherein: the lifting plunger (4) comprises a vertical cylinder (18) and an upper piston cylinder (21) and a lower piston cylinder (17) which are integrally arranged at the upper end and the lower end of the vertical cylinder, wherein the upper piston cylinder (21) and the lower piston cylinder (17) are respectively provided with a lower piston head (16) in a telescopic manner, a vertical cylinder air cavity (23) is arranged in the vertical cylinder (18), a plurality of rubber sleeves (20) are fixedly sleeved on the outer surface of the vertical cylinder (18), an annular air cavity (19) is arranged in the rubber sleeve (20), and the vertical cylinder (18) is communicated with the vertical cylinder air cavity (23).