CN215057261U - Bridge type eccentric high-pressure gas lift valve - Google Patents
Bridge type eccentric high-pressure gas lift valve Download PDFInfo
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- CN215057261U CN215057261U CN202120836001.5U CN202120836001U CN215057261U CN 215057261 U CN215057261 U CN 215057261U CN 202120836001 U CN202120836001 U CN 202120836001U CN 215057261 U CN215057261 U CN 215057261U
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Abstract
The utility model relates to an eccentric high pressure gas lift valve of bridge type belongs to gas lift drainage gas production instrument technical field. The nitrogen gas spring assembly is arranged at the upper part of the eccentric hole, and the check valve assembly is arranged at the lower part of the eccentric hole. The utility model discloses a nitrogen gas spring drive switch's mode has improved the bearing capacity of gas lift valve, can satisfy the demand of ultra-deep high-pressure gas well gas lift drainage, has the external diameter minimizing, and the characteristics of main entrance flow area maximize have avoided producing great throttle pressure differential's phenomenon because the gas lift valve external diameter reduces the corresponding area of reducing the main flow passage. The utility model discloses can form gas lift drainage gas production integration speed tubular column with continuous oil pipe is supporting, utilize production main well adjacent well natural gas or high-pressure nitrogen gas or CNG to carry out high-pressure gas lift drainage, can also utilize this speed tubular column normal gas production, realize a pipe is multi-purpose.
Description
Technical Field
The utility model relates to an eccentric high pressure gas lift valve of bridge type belongs to gas lift drainage gas production instrument technical field.
Background
The well completion string of most ultra-deep high-yield gas wells consists of
The minimum drift diameter of a pipe column is 62-76 mm, after the gas well is put into operation for a period of time, the gas well is usually stopped in injection and production due to liquid accumulation at the bottom of the well, and the main solution is gas lift drainage; the existing throwing and fishing type gas lift valve and fixed gas lift valve cannot be put into an original well completion pipe column of an ultra-deep high-yield gas well for gas lift liquid drainage due to low bearing pressure and large outer diameter of a working barrel, and although the coiled tubing has a small pipe diameter and has the function of realizing deep liquid drainage by gas lift while deepening, the coiled tubing has the defects that construction equipment of the coiled tubing must be used during gas lift of each well, the advantage of gas lift drainage can be revealed by adopting high-pressure nitrogen or compressed natural gas high-pressure gas lift, and the existing throwing and fishing type gas lift valve and fixed gas lift valve are not suitable for gas lift drainage by using natural gas of adjacent wells in a production main line and have high construction operation cost; furthermore, if the coiled tubing is fixedly suspended at a wellhead to form a speed tubular column for gas lift drainage, the depth of the speed tubular column is fixed, the lower part is deep and the gas lift can not be communicated, and the lower part is shallow and the gas lift drainage can not be achieved, so that the method can be taken into considerationThe column, this is also the production technology problem that needs to be solved urgently today.
Disclosure of Invention
The utility model aims at providing a device which has the characteristics of small outer diameter, short length and large bearing pressure, can be used with a continuous oil pipe in a matching way to form a gas lift drainage and gas production integrated speed pipe column, thereby utilizing the natural gas of adjacent wells in a production main line to perform gas lift drainage, improving drainage and gas production efficiency, and also utilizing high-pressure nitrogen or compressed natural gas to perform high-pressure gas lift drainage to improve the emptying capacity of gas lift drainage; during production, the speed pipe column can be directly utilized to normally produce gas, the gas production liquid carrying capacity is improved, the advantages of small pipe diameter, high pulling-down speed, and strong gas lift drainage and gas production liquid carrying capacity of the coiled tubing are fully exerted, and the bridge type eccentric high-pressure gas lift valve with the purpose of one pipe for multiple purposes is realized.
The utility model discloses a realize above-mentioned purpose through following technical scheme:
this eccentric high-pressure gas lift valve of bridge type comprises working barrel, nitrogen gas spring assembly and single current valve assembly, its characterized in that: the working barrel is internally provided with a crescent fluid main channel and a circular eccentric hole, the nitrogen spring assembly is arranged at the upper part of the eccentric hole, and the check valve assembly is arranged at the lower part of the eccentric hole.
An upper valve seat and a lower valve seat are arranged in the eccentric hole of the working barrel and are communicated through a valve hole.
The outer surfaces of the upper end and the lower end of the working barrel are provided with threads, and the two ends of the working barrel are respectively connected with the special connector of the continuous oil pipe through the threads.
The nitrogen spring assembly is composed of an upper plug, a clamp spring, a valve core, a pneumatic piston, a spring and an upper valve rod, the upper valve rod is installed in an upper valve seat on the upper portion of the eccentric hole, the spring is installed in an upper end hole of the upper valve rod, the pneumatic piston is installed at the upper end of the upper valve rod, the valve core is installed at the upper end portion of the pneumatic piston, and the upper valve rod and the pneumatic piston are fixed on the upper portion of the eccentric hole of the working barrel through the upper plug and the clamp spring.
The check valve assembly is composed of a lower valve rod, a reset spring and a lower plug, the lower valve rod is installed in a lower valve seat at the lower part of the eccentric hole, the lower end round rod of the lower valve rod is sleeved with the reset spring, and the lower valve rod and the reset spring are fixed at the lower part of the eccentric hole of the working barrel through the lower plug.
The hole of the upper valve rod, which is provided with the spring, is filled with nitrogen through the valve core.
The middle of the lower plug is provided with a middle through hole matched with the lower end round rod of the lower valve rod, air outlet holes are uniformly distributed around the middle through hole, and the lower plug is in threaded connection with the bottom end of the eccentric hole.
And an air inlet hole communicated with the cylindrical hole provided with the upper valve rod is formed in the middle of the outer side of the eccentric hole.
The upper part of the outer surface of the working barrel is provided with a sealing ring a, and the lower part of the outer surface of the working barrel is provided with a sealing ring b; a sealing ring c is arranged on the outer surface of the upper plug; a sealing ring d is arranged on the outer surface of the valve core; and a sealing ring e is arranged on the upper part of the outer surface of the air pressure piston, and a sealing ring f is arranged on the lower part of the outer surface of the air pressure piston.
Compared with the prior art, the utility model beneficial effect lie in:
1. the bridge type eccentric high-pressure gas lift valve adopts a piston type nitrogen spring to drive the switch, so that the bearing capacity of the gas lift valve is greatly improved, and the requirement of gas lift drainage of an ultra-deep high-pressure gas well can be met.
2. Because the bridge type eccentric structure is adopted in the bridge type eccentric high-pressure gas lift valve, the outer diameter of the tool is minimized, the flow area of the main channel is maximized, and the phenomenon that the flow area of the main channel is correspondingly reduced while the outer diameter of the gas lift valve is reduced to generate larger throttling pressure difference can be avoided.
3. The bridge type eccentric high-pressure gas lift valve is internally provided with the check valve assembly, so that the bridge type eccentric high-pressure gas lift valve is favorable for being matched with a sliding sleeve blocked at the bottom of a continuous oil pipe for use, and the snubbing serving is realized.
4. The lower plug of the built-in check valve assembly of the bridge type eccentric high-pressure gas lift valve is made of soluble materials, and the requirements of reverse gas lift and forward gas lift can be met.
5. The bridge type eccentric high-pressure gas lift valve has the characteristics of small outer diameter, short length and large bearing pressure, and can be used with a coiled tubing in a matched manner to form a gas lift drainage and gas production integrated speed tubular column, so that the natural gas of adjacent wells in a production main line can be utilized to perform gas lift drainage, the drainage and gas production efficiency is improved, high-pressure nitrogen or compressed natural gas can be utilized to perform high-pressure gas lift drainage, the emptying capacity of gas lift drainage is improved, the normal gas production of the speed tubular column can be directly utilized during production, the gas production liquid carrying capacity is improved, the purpose of one tube with multiple purposes is realized, and the advantages of small pipe diameter, high pulling speed, high gas lift drainage and gas production liquid carrying capacity of the coiled tubing are fully exerted.
6. If the bridge type eccentric high-pressure gas lift valve is connected by the flexible joints which can be wound up and down, the bridge type eccentric high-pressure gas lift valve can directly enter the roller along with the coiled tubing to operate, and the operation is safer and more convenient.
7. The bridge type eccentric high-pressure gas lift valve can also be matched with a small oil pipe to form a gas lift drainage pipe column and a production pipe column which are suitable for high pressure and ultra-deep.
Drawings
FIG. 1 is a schematic diagram of a bridge type eccentric high pressure gas lift valve;
FIG. 2 is a schematic structural view of the cross-section A-A of FIG. 1;
FIG. 3 is a schematic structural view of the cross-section B-B of FIG. 1;
FIG. 4 is a schematic view of the bridge type eccentric high pressure gas lift valve installed in the continuous oil pipe.
In the figure: 1. the device comprises a working cylinder, 1-1 parts, a main fluid channel, 1-2 parts, an eccentric hole, 1-3 parts, an air inlet hole, 1-4 parts, a valve hole, 1-5 parts, an upper valve seat, 1-6 parts, a lower valve seat, 1-7 sealing rings a, 1-8 parts, sealing rings b, 2 parts, an upper plug, 2-1 parts, an inner hexagon, 2-2 parts, sealing rings c, 3 parts, a clamp spring, 4 parts, a valve core, 4-1 parts, sealing rings d, 5 parts, a pneumatic piston, 5-1 parts, sealing rings e, 5-2 parts, sealing rings f, 6 parts, a spring, 7 parts, an upper valve rod, 8 parts, a lower valve rod, 9 parts, a reset spring, 10 parts, a lower plug, 10-1 part, a middle through hole, 10-2 parts, an air outlet hole, 11 parts, a continuous oil pipe, 12 parts and a special connector.
Detailed Description
The bridge type eccentric high-pressure gas lift valve is described in detail below with reference to the accompanying drawings (see fig. 1-4):
the bridge type eccentric high-pressure gas lift valve is composed of a working cylinder 1, a nitrogen spring assembly and a check valve assembly, wherein the working cylinder 1 is a cylinder in shape, the outer diameter of the working cylinder 1 is consistent with that of a continuous oil pipe, a crescent-shaped main fluid channel 1-1 and a circular eccentric hole 1-2 are manufactured in the working cylinder 1, the crescent-shaped main fluid channel 1-1 is beneficial to increasing the flow area of the main fluid channel, an upper valve seat 1-5 and a lower valve seat 1-6 are manufactured in the eccentric hole 1-2, the upper valve seat 1-5 is communicated with the lower valve seat 1-6 through a valve hole 1-4, the nitrogen spring assembly is installed on the upper portion of the eccentric hole 1-2, and the check valve assembly is installed on the lower portion of the eccentric hole 1-2. The nitrogen spring assembly is composed of an upper plug 2, a clamp spring 3, a valve core 4, an air pressure piston 5, a spring 6 and an upper valve rod 7, wherein the upper valve rod 7 is installed in an upper valve seat 1-5 on the upper portion of an eccentric hole 1-2, the spring 6 is installed in an upper end hole of the upper valve rod 7, the air pressure piston 5 is installed at the upper end of the upper valve rod 7, the valve core 4 is installed at the upper end portion of the air pressure piston 5, a sealing ring d4-1 is installed between the valve core 4 and the air pressure piston 5, and nitrogen can be injected into the air chamber through the valve core 4. The upper valve rod 7 and the air pressure piston 5 are fixed on the upper portion of an eccentric hole 1-2 of the working barrel 1 through an upper plug 2 and a clamp spring 3, the upper plug 2 is installed on the upper portion of the eccentric hole 1-2 through a screw thread, an inner hexagonal wrench hole 2-1 is formed in the upper end face of the upper plug 2, and the upper plug 2 and the eccentric hole 1-2 form sealing through a sealing ring c 2-2. The outer surface of the air pressure piston 5 is made into a reducing cylinder structure with a large upper part and a small lower part, the small-diameter cylinder part below the air pressure piston 5 is inserted into the cylindrical inner cavity at the upper part of the upper valve rod 7, and the lower part of the small-diameter cylinder of the air pressure piston 5 is in sealing fit with the cylindrical inner cavity wall at the upper part of the upper valve rod 7 through a sealing ring f 5-2. The outer wall of a large-diameter cylinder of the air pressure piston 5 is sealed with the inner wall of the eccentric hole 1-2 through a sealing ring e5-1, a cylindrical inner cavity is formed in the air pressure piston 5 and is communicated with the cylindrical inner cavity at the upper part of the upper valve rod 7 to form an integral air chamber inner cavity, and the spring 6 is placed in the air chamber at the upper part of the upper valve rod 7 below the bottom end face of the air pressure piston 5.
The check valve assembly is composed of a lower valve rod 8, a return spring 9 and a lower plug 10, wherein the lower valve rod 8 is installed in a lower valve seat 1-6 at the lower part of the eccentric hole 1-2, and the lower valve rod 8 and the return spring 9 are fixed at the lower part of the eccentric hole 1-2 of the working barrel 1 through the lower plug 10. The lower portion of the lower valve rod 8 is made into a small-diameter cylinder, a middle through hole 10-1 matched with a lower end round rod of the lower valve rod 8 is formed in the middle of the lower plug 10, the inner diameter of the middle through hole 10-1 is slightly larger than the outer diameter of the small-diameter cylinder at the lower portion of the lower valve rod 8, the small-diameter cylinder portion at the lower portion of the lower valve rod 8 is inserted into the middle through hole 10-1 of the lower plug 10, a reset spring 9 is sleeved on the outer surface of the middle of the small-diameter cylinder, under the action of the reset spring 9, closing between a spherical structure at the upper portion of the lower valve rod 8 and the lower valve seat 1-6 is achieved, air outlet holes 10-2 which are communicated up and down are formed in the periphery of the middle through hole 10-1 of the lower plug 10, and the lower plug 10 is installed at the lower portion of the eccentric hole 1-2 through screw threads. An air inlet hole 1-3 communicated with a cylindrical hole provided with an upper valve rod 7 is formed in the middle of the outer side of the eccentric hole 1-2, and the air inlet hole 1-3 is opposite to a small-diameter cylinder at the lower part of the upper valve rod 7.
The outer surfaces of the upper end and the lower end of the working barrel 1 are provided with threads, and the two ends of the working barrel 1 are respectively connected with the special connector 12 of the coiled tubing through the threads and are sealed through a sealing ring a1-7 and a sealing ring b 1-8.
The lower plug 10 of the check valve assembly can be made of a soluble material and is designed to be completely dissolved after the snubbing operation is completed, the return spring 9 and the lower valve rod 8 fall into the bottom of the tubular column under the action of gravity, at the moment, the coiled tubing can be positively pressurized at the wellhead, high-pressure gas enables the spring 6 to be upwards compressed through the valve hole 1-4, and after the upper valve rod 7 leaves the upper valve seat 1-5, the high-pressure gas flows into the annular space of the coiled tubing and the oil pipe from the air inlet 1-3 until the annular space returns to the ground, so that the requirement of positive gas lift can be met.
If the bridge type eccentric high-pressure gas lift valve is connected by the flexible joints which can be wound up and down, the bridge type eccentric high-pressure gas lift valve can directly enter the roller along with the coiled tubing to operate, and the operation is safer and more convenient. The bridge type eccentric high-pressure gas lift valve can also be matched with a small oil pipe for use, so that a gas lift drainage pipe column and a production pipe column which are suitable for high pressure and ultra-deep are formed.
After the bridge type eccentric high-pressure gas lift valve enters a well along with a connecting oil pipe, on one hand, when the interior of a continuous oil pipe is positively pressurized, the pressure in a main fluid channel 1-1 is increased, and under the action of a return spring 9, a check valve assembly is in a closed state, so that the snubbing operation is favorably realized; on the other hand, when the outer ring of the coiled tubing is in reverse-pressurizing gas lift, high-pressure gas enters from the gas inlet 1-3 of the working cylinder 1, overcomes the pressure of the spring 6, compresses the spring 6 upwards, pushes the check valve downwards along the valve hole 1-4 after the upper valve rod 7 leaves the upper valve seat 1-5, and then enters the main fluid channel 1-1 in the gas lift valve along the gas outlet 10-2, so that the gas lift valve well enters a reverse gas lift working state;
the above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.
Claims (9)
1. The utility model provides an eccentric high-pressure gas lift valve of bridge type, it comprises working barrel (1), nitrogen gas spring assembly and single current valve assembly, its characterized in that: a crescent fluid main channel (1-1) and a circular eccentric hole (1-2) are manufactured in the working barrel (1), the nitrogen spring assembly is installed on the upper portion of the eccentric hole (1-2), and the check valve assembly is installed on the lower portion of the eccentric hole (1-2).
2. A bridge type eccentric high pressure gas lift valve according to claim 1, wherein: an upper valve seat (1-5) and a lower valve seat (1-6) are arranged in an eccentric hole (1-2) of the working barrel (1), and the upper valve seat (1-5) is communicated with the lower valve seat (1-6) through a valve hole (1-4).
3. A bridge type eccentric high pressure gas lift valve according to claim 1, wherein: the nitrogen spring assembly comprises an upper plug (2), a clamp spring (3), a valve core (4), a pneumatic piston (5), a spring (6) and an upper valve rod (7), wherein the upper valve rod (7) is installed in an upper valve seat (1-5) on the upper portion of an eccentric hole (1-2), the spring (6) is installed in an upper end hole of the upper valve rod (7), the pneumatic piston (5) is installed at the upper end of the upper valve rod (7), the valve core (4) is installed at the upper end portion of the pneumatic piston (5), and the upper valve rod (7) and the pneumatic piston (5) are fixed on the upper portion of the eccentric hole (1-2) of a working barrel (1) through the upper plug (2) and the clamp spring (3).
4. A bridge type eccentric high pressure gas lift valve according to claim 1, wherein: the check valve assembly is composed of a lower valve rod (8), a reset spring (9) and a lower plug (10), the lower valve rod (8) is installed in a lower valve seat (1-6) at the lower part of the eccentric hole (1-2), the reset spring (9) is sleeved on a round rod at the lower end of the lower valve rod (8), and the lower valve rod (8) and the reset spring (9) are fixed at the lower part of the eccentric hole (1-2) of the working barrel (1) through the lower plug (10).
5. A bridge type eccentric high pressure gas lift valve according to claim 1, wherein: the outer surfaces of the upper end and the lower end of the working barrel (1) are provided with threads, and the two ends of the working barrel (1) are respectively connected with a special connector (12) of the continuous oil pipe through the threads.
6. A bridge type eccentric high pressure gas lift valve according to claim 3, wherein: the hole of the upper valve rod (7) which is provided with the spring (6) is filled with nitrogen through the valve core (4).
7. A bridge type eccentric high pressure gas lift valve according to claim 4, wherein: the middle of the lower plug (10) is provided with a middle through hole (10-1) matched with the lower end round rod of the lower valve rod (8), air outlet holes (10-2) are uniformly distributed and manufactured around the middle through hole (10-1), and the lower plug (10) is in threaded connection with the bottom end of the eccentric hole (1-2).
8. A bridge type eccentric high pressure gas lift valve according to claim 1, wherein: an air inlet (1-3) communicated with the cylindrical hole provided with the upper valve rod (7) is formed in the middle of the outer side of the eccentric hole (1-2).
9. A bridge type eccentric high pressure gas lift valve according to claim 1 or 3, wherein: the upper part of the outer surface of the working barrel (1) is provided with a sealing ring a (1-7), and the lower part of the outer surface is provided with a sealing ring b (1-8); a sealing ring c (2-2) is arranged on the outer surface of the upper plug (2); a sealing ring d (4-1) is arranged on the outer surface of the valve core (4); and a sealing ring e (5-1) is arranged on the upper part of the outer surface of the air pressure piston (5), and a sealing ring f (5-2) is arranged on the lower part of the outer surface of the air pressure piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836001.5U CN215057261U (en) | 2021-04-22 | 2021-04-22 | Bridge type eccentric high-pressure gas lift valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120836001.5U CN215057261U (en) | 2021-04-22 | 2021-04-22 | Bridge type eccentric high-pressure gas lift valve |
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| Publication Number | Publication Date |
|---|---|
| CN215057261U true CN215057261U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120836001.5U Active CN215057261U (en) | 2021-04-22 | 2021-04-22 | Bridge type eccentric high-pressure gas lift valve |
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| CN (1) | CN215057261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345163A (en) * | 2023-12-05 | 2024-01-05 | 东营市昌瑞石油机械配件有限责任公司 | Double-sealing gas lift valve |
-
2021
- 2021-04-22 CN CN202120836001.5U patent/CN215057261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345163A (en) * | 2023-12-05 | 2024-01-05 | 东营市昌瑞石油机械配件有限责任公司 | Double-sealing gas lift valve |
| CN117345163B (en) * | 2023-12-05 | 2024-02-06 | 东营市昌瑞石油机械配件有限责任公司 | Double-sealing gas lift valve |
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