CN215520837U

CN215520837U - Gas lift valve for rapid liquid drainage after high-pressure operation of oil and gas field

Info

Publication number: CN215520837U
Application number: CN202122317672.3U
Authority: CN
Inventors: 王云瑞; 张勇
Original assignee: Luzhou Jiangyang Ruiao Machinery Co ltd
Current assignee: Luzhou Jiangyang Ruiao Machinery Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-14
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a gas lift valve for quickly draining liquid after high-pressure operation of an oil and gas field, which comprises a middle valve body, wherein a corrugated pipe is inserted into one side in the middle valve body, one side of the middle valve body is in threaded connection with an upper valve body, one side of the corrugated pipe is in contact connection with one side of the upper valve body, a valve disc is inserted into the other side in the corrugated pipe, one side of the valve disc is provided with a valve rod, one side of the valve rod is provided with a valve ball, the other side in the middle valve body is inserted with a valve seat, one side wall of the valve seat is provided with a gas passing hole, one side of the valve ball is in sealed connection with one side face of the gas passing hole, two ends of the outer wall of the middle valve body are respectively provided with a gas inlet hole, the other side of the middle valve body is in threaded connection with a lower valve body, and the other side of the lower valve body is in threaded connection with a one-way valve body. Gaseous the valve disk extrusion of crossing in getting into the well valve body through the inlet port, gaseous entering is promoted the second valve ball in the lower valve body, drives the second spring simultaneously and produces contraction deformation, and gaseous entering carries out gas lift work in the oil gas pipeline, reaches the effect of quick flowing back.

Description

Gas lift valve for rapid liquid drainage after high-pressure operation of oil and gas field

Technical Field

The utility model belongs to the technical field of gas lift valves, and particularly relates to a gas lift valve for quickly discharging liquid after high-pressure operation of an oil and gas field.

Background

In the process of oil and gas exploitation, gas such as natural gas, nitrogen and the like is injected into a well, liquid in the well is lifted to the ground, crude oil is extracted, or liquid in the well shaft is removed or the density of a liquid column of the well shaft is reduced, injected gas is injected along an annulus or an oil pipe and enters through a gas lift valve on a gas lift pipe column, so that the weight of the liquid column is lightened, the back pressure on a production layer is reduced, and smooth production of the oil and gas well is ensured.

The gas lift valve is the core instrument that realizes gas lift oil recovery, flowing back, the current gas lift valve that is used for quick flowing back behind the oil gas field high-pressure operation, mainly is to throw and drag for formula gas lift valve, the bellows thickness that conventional gas lift valve adopted is 0.3 millimeter, and the bellows is direct and the intraductal atmospheric pressure contact of cover for the intraductal atmospheric pressure of cover directly acts on the bellows outer wall, and the bellows is intraductal upper end and lower extreme weld respectively has bellows guide bar and the bellows lower part of the body, exists the weak point and has: at the in-process of gas lift, make the bellows extend and receive serious hindrance with the shrink, can't be quick carry out the gas lift work in to the oil gas pipe, lead to the operation requirement under can't satisfying oil gas field high pressure operation condition, produce hydrops in the extra-deep well easily, have the problem of unable quick flowing back.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas lift valve for quickly discharging liquid after high-pressure operation of an oil and gas field, and aims to solve the problem that liquid cannot be quickly discharged in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a gas lift valve that is used for quick flowing back behind oil gas field high pressure operation, includes well valve body, one side is inserted in well valve body is equipped with the bellows, well valve body one side threaded connection has last valve body, bellows one side with go up valve body one side contact and connect, the valve disc has been inserted to the opposite side in the bellows, valve disc one side is provided with the valve rod, valve rod one side is provided with the valve ball, the disk seat has been inserted to the opposite side in the well valve body, a disk seat lateral wall is equipped with the gas pocket, valve ball one side with a gas pocket side sealing connection, well valve body outer wall both ends all are equipped with the inlet port, well valve body opposite side threaded connection has lower valve body, valve body opposite side threaded connection has check valve body down.

Preferably, well valve body with go up and be the cavity access structure in the valve body, and communicate each other, go up one side threaded connection in the valve body and have the valve block, valve block one side is equipped with the valve opening, the valve opening inner wall is equipped with the toper valve groove, one side is provided with first spring in the toper valve groove, first spring one side is provided with first valve ball, first valve ball opposite side with the valve opening is located toper valve groove inner wall another side sealing connection, it is equipped with the plenum chamber to go up one side in the valve body, the plenum chamber with one side intercommunication in the bellows, it has main seal packing to insert in the opposite side to go up the valve body, it is located to go up the internal opposite side of valve main seal packing one side threaded connection has the plug.

Preferably, the equal hoop in disk seat outer wall both sides is equipped with the seal groove, be provided with the sealing ring in the seal groove, another lateral wall of disk seat with lower valve body contact is connected, be hollow channel structure in the lower valve body, cross the gas pocket opposite side with hollow channel intercommunication in the lower valve body.

Preferably, check valve body one side is equipped with the mounting groove, mounting groove inner wall one side is equipped with the venthole, mounting groove inner wall one side is provided with the second spring, second spring opposite side cover is equipped with the second valve ball, second valve ball opposite side with cavity passageway opposite side, face sealing connection in the lower valve body.

Preferably, a first sealing packing is sleeved on one side of the outer wall of the upper valve body, one side of the first sealing packing is in sealing connection with one side wall surface of the middle valve body, second sealing packing is sleeved on two sides of the outer wall of the lower valve body, and one side of the second sealing packing is in sealing connection with the other side wall of the middle valve body and one side wall surface of the one-way valve body respectively.

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

1. according to the utility model, nitrogen is firstly injected into the plenum chamber and the corrugated pipe through the valve hole of the valve block through the left side of the upper valve body, the nitrogen pushes the first valve ball to move leftwards through high pressure to extrude the first spring, so that the first spring is stressed to contract and deform, the nitrogen pushes the first valve ball and then enters the inflation chamber through the valve hole to expand and expand the inner wall of the corrugated pipe under stress, and meanwhile, the valve rod is pushed by the valve disc to drive the valve ball to extrude the valve seat, so that the effect of sealing connection between the valve ball and the air passing hole is achieved.

2. The utility model uses the gas lift valve, simultaneously, high-pressure gas enters the right side of the middle valve body through the gas inlet hole, the high-pressure gas pushes the valve disc through extrusion, when the pressure of the high-pressure gas is greater than the pressure of the nitrogen, the valve disc is pushed to move towards the left side, the valve disc drives the valve ball to be separated from the left side of the air passing hole through the valve rod, the high-pressure gas enters the hollow channel of the lower valve body through the air passing hole, the pressure of the high-pressure gas is greater than the extension thrust of the second spring, the second valve ball is pushed towards the right side, simultaneously drives the second spring to generate contraction deformation, high-pressure gas enters the oil-gas pipeline through the gas outlet, the paint in the paint pipeline is subjected to air lift work, and when the driving force of the corrugated pipe is not changed, make the easier gas lift work that carries on of high-pressure gas, more convenience reaches the effect of quick flowing back to oil gas lift, prevents to take place the hydrops phenomenon in the oil gas pipeline.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of fig. 1.

In the figure: 1. a middle valve body; 2. a bellows; 3. an upper valve body; 4. a valve disc; 5. a valve stem; 6. a valve ball; 7. a valve seat; 8. air passing holes; 9. an air inlet; 10. a lower valve body; 11. a check valve body; 12. a valve block; 13. a valve bore; 14. a conical valve spool; 15. a first spring; 16. a first valve ball; 17. plugging with a thread; 18. a sealing groove; 19. a seal ring; 20. mounting grooves; 21. an air outlet; 22. a second spring; 23. a second valve ball; 24. a first seal packing; 25. a second seal packing; 105. a plenum chamber; 106. and a main seal packing.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a gas lift valve for fast liquid drainage after high pressure operation in an oil and gas field, which comprises a middle valve body 1, wherein a corrugated pipe 2 is inserted into the left side of the middle valve body 1, the corrugated pipe 2 is made of plastic, the corrugated pipe 2 is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along a folding and stretching direction, the corrugated pipe 2 has a plurality of cylindrical thin-walled corrugated shells with transverse corrugations, the corrugated pipe 2 has elasticity and can generate displacement under the action of pressure, axial force, transverse force or bending moment, the left side of the middle valve body 1 is connected with an upper valve body 3 in a threaded manner, the middle valve body 1 and the upper valve body 3 are connected in a threaded manner, in the process of mutual rotation and fixation through threaded locking, the upper valve body 3 is positioned on the right side wall of the middle valve body 1, the left side wall of the corrugated pipe 2 is pushed to move to the right side, the corrugated pipe 2 is fixed in the middle valve body 1 through pushing, the left side wall of a corrugated pipe 2 is tightly contacted and connected with the right side of an upper valve body 3, a valve disc 4 is inserted into the right side of the corrugated pipe 2, a valve rod 5 is welded on the right side wall of the valve disc 4, a valve ball 6 is welded on the right side of the valve rod 5, a valve seat 7 is inserted into the right side of a middle valve body 1, the valve seat 7 is of an H-shaped structure, a gas passing hole 8 is processed on the left side wall of the valve seat 7, the right side of the valve ball 6 is hermetically connected with the left side face of the gas passing hole 8, air inlet holes 9 are processed at both ends of the outer wall of the middle valve body 1, a lower valve body 10 is connected with the other right side of the middle valve body 1 through threads, a one-way valve body 11 is connected with the right side of the lower valve body 10 through threads, hollow channel structures are formed in the middle valve body 1 and the upper valve body 3 and are mutually communicated, a valve block 12 is connected with the left side wall of the valve block 12 through threads, a conical valve hole 14 is processed on the inner wall of the valve hole 13, a first spring 15 is welded on the right side of the conical valve hole 14, and the first spring 15 is initially in an extended state, a first valve ball 16 is welded on the left side of a first spring 15, the left side of the first valve ball 16 is hermetically connected with the left side of the inner wall of a valve hole 13 positioned on a conical valve groove 14, a plenum chamber 105 is processed on the right side in an upper valve body 3, the plenum chamber 105 is communicated with the left side in a corrugated pipe 2, a main seal packing 106 is inserted in the left side in the upper valve body 3, the main seal packing 106 is made of aramid fiber and carbon fiber, a plug 17 is connected with the left side of the main seal packing 106 in the upper valve body 3 in a threaded manner, seal grooves 18 are processed on both sides of the outer wall of a valve seat 7 in an annular manner, a seal ring 19 is embedded in the seal grooves 18, the right side wall of the valve seat 7 is in contact connection with the left side wall of a lower valve body 10, a hollow channel structure is formed in the lower valve body 10, the right side of a gas passing hole 8 is communicated with a hollow channel in the lower valve body 10, a mounting groove 20 is processed on the left side wall of the one-way valve body 11, a gas outlet hole 21 is processed on the right side of the inner wall of the mounting groove 20, a second spring 22 is welded on the right side of the inner wall of the mounting groove 20, the second spring 22 is the state of stretching initially, the second valve ball 23 has been emboliaed in the second spring 22 left side, be welded connection between second spring 22 and the second valve ball 23, cavity passageway right flank sealing connection in second valve ball 23 left side and the lower valve body 10, it has first sealed packing 24 to embolia on 3 outer walls right sides of last valve body, first sealed packing 24 is aramid fiber and carbon fiber material, first sealed packing 24 right side and 1 left side wall sealing connection of well valve body, lower valve body 10 outer wall both sides have all been emboliaed with sealed packing 25 of second, sealed packing 25 of second is aramid fiber and carbon fiber material, the sealed packing 25 outside of both sides second respectively with 1 right side wall of well valve body and 11 left side walls sealing connection of check valve body.

The working principle of the embodiment is as follows: at first through the left side of last valve body 3, pour into plenum 105 and bellows 2 into nitrogen gas through valve opening 13 of valve block 12 in, nitrogen gas promotes first valve ball 16 through high pressure and moves left, extrude first spring 15, make first spring 15 atress take place to contract deformation, nitrogen gas promotes first valve ball 16 back, enter into plenum 105 through valve opening 13 in, make 2 inner walls of bellows atress inflation extend, it drives valve ball 6 and extrudees disk seat 7 to push valve rod 5 through valve disc 4 simultaneously, reach the effect of face sealing connection between valve ball 6 and the air passing hole 8. When the gas lift valve is used, high-pressure gas enters the right side of the middle valve body 1 through the gas inlet hole 9, the high-pressure gas pushes the valve disc 4 through extrusion, when the pressure of the high-pressure gas is greater than that of nitrogen, the valve disc 4 is pushed to move towards the left side, the valve disc 4 drives the valve ball 6 to be separated from the left side of the gas passing hole 8 through the valve rod 5, the high-pressure gas enters the hollow channel of the lower valve body 10 through the gas passing hole 8, the pressure of the high-pressure gas is greater than the extension thrust of the second spring 22, the second valve ball 23 is pushed towards the right side, the second spring 22 is driven to generate contraction deformation at the same time, the high-pressure gas enters the oil gas pipeline through the gas outlet hole 21, the gas lift work is performed on paint in the paint pipeline, and under the condition that the thrust of the corrugated pipe 2 is not changed, the gas lift work is easier on the oil gas lift, and the effect of quick liquid drainage is achieved, the phenomenon of liquid accumulation in the oil and gas pipeline is prevented.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a gas lift valve that is used for quick flowing back behind oil gas field high pressure operation which characterized in that: comprises a middle valve body (1), a corrugated pipe (2) is inserted into one side in the middle valve body (1), one side of the middle valve body (1) is in threaded connection with an upper valve body (3), one side of the corrugated pipe (2) is in contact connection with one side of the upper valve body (3), a valve disc (4) is inserted into the other side in the corrugated pipe (2), a valve rod (5) is arranged on one side of the valve disc (4), a valve ball (6) is arranged on one side of the valve rod (5), a valve seat (7) is inserted into the other side of the interior of the middle valve body (1), a gas passing hole (8) is formed in one side wall of the valve seat (7), one side of the valve ball (6) is hermetically connected with one side of the gas passing hole (8), both ends of the outer wall of the middle valve body (1) are provided with air inlets (9), the other side of the middle valve body (1) is in threaded connection with a lower valve body (10), the other side of the lower valve body (10) is in threaded connection with a one-way valve body (11).

2. The gas lift valve for rapid drainage after high pressure operation in an oil and gas field according to claim 1, wherein: the middle valve body (1) and the upper valve body (3) are both provided with hollow channel structures, and are communicated with each other, a valve block (12) is connected with one side of the inner part of the upper valve body (3) through screw threads, a valve hole (13) is arranged at one side of the valve block (12), a conical valve groove (14) is arranged on the inner wall of the valve hole (13), a first spring (15) is arranged on one side in the conical valve groove (14), a first valve ball (16) is arranged on one side of the first spring (15), the other side of the first valve ball (16) is hermetically connected with the other side surface of the valve hole (13) positioned on the inner wall of the conical valve groove (14), a plenum chamber (105) is arranged on one side in the upper valve body (3), the plenum chamber (105) is communicated with one side in the corrugated pipe (2), a main sealing packing (106) is inserted into the other side in the upper valve body (3), and the other side in the upper valve body (3) is positioned at one side of the main sealing packing (106) and is in threaded connection with a plug (17).

3. The gas lift valve for rapid drainage after high pressure operation in an oil and gas field according to claim 1, wherein: the equal hoop of disk seat (7) outer wall both sides is equipped with seal groove (18), be provided with sealing ring (19) in seal groove (18), another lateral wall of disk seat (7) with valve body (10) contact is connected down, be hollow channel structure in lower valve body (10), cross gas pocket (8) opposite side with cavity passageway intercommunication in lower valve body (10).

4. The gas lift valve for rapid drainage after high pressure operation in an oil and gas field according to claim 1, wherein: one-way valve body (11) one side is equipped with mounting groove (20), mounting groove (20) inner wall one side is equipped with venthole (21), mounting groove (20) inner wall one side is provided with second spring (22), second spring (22) opposite side cover is equipped with second valve ball (23), second valve ball (23) opposite side with cavity passageway another side sealing connection in lower valve body (10).

5. The gas lift valve for rapid drainage after high pressure operation in an oil and gas field according to claim 1, wherein: go up valve body (3) outer wall one side embolia first sealed packing (24), first sealed packing (24) one side with well valve body (1) one side wall sealing connection, lower valve body (10) outer wall both sides all overlap and are equipped with second sealed packing (25), both sides second sealed packing (25) one side respectively with well valve body (1) another lateral wall with one side wall sealing connection of check valve body (11).