CN215485971U - Bridge type eccentric built-in forward gas lift valve - Google Patents
Bridge type eccentric built-in forward gas lift valve Download PDFInfo
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- CN215485971U CN215485971U CN202121396192.4U CN202121396192U CN215485971U CN 215485971 U CN215485971 U CN 215485971U CN 202121396192 U CN202121396192 U CN 202121396192U CN 215485971 U CN215485971 U CN 215485971U
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Abstract
The utility model relates to a bridge type eccentric built-in forward gas lift valve, belonging to the technical field of gas lift drainage gas production tools. The pneumatic lifting device is characterized in that a crescent-shaped main fluid channel and a bridge type eccentric counter bore are formed in the working cylinder, the upper portion of the bridge type eccentric counter bore is provided with the pneumatic lifting valve through threaded connection, and the bottom of the bridge type eccentric counter bore is provided with an air outlet communicated with the outer side of the working cylinder. According to the utility model, as the internal part of the working barrel adopts a bridge type eccentric structure, and the main fluid channel is made into a crescent shape, the external diameter of the working barrel is minimized, the flow area of the main fluid channel is maximized, and the phenomenon of large throttling pressure difference caused by correspondingly reducing the flow area of the main fluid channel while reducing the external diameter of the working barrel is avoided; the gas lift valve has the advantages that the existing gas lift valve machining and debugging technology is fully utilized, the structure is simple, the machining and debugging difficulty is greatly reduced, and the gas lift valve can be combined with a coiled tubing or a small oil tube to form a speed tubular column to be put into an original well completion tubular column of an ultra-deep high-yield gas well for gas lift drainage.
Description
Technical Field
The utility model relates to a bridge type eccentric built-in forward gas lift valve, belonging to the technical field of gas lift drainage gas production tools.
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 often stopped in injection and production due to liquid accumulation at the bottom of the well, and the best solution is to use the natural gas of the trunk line of the adjacent well for gas lift drainage by connecting a fixed gas lift valve through a continuous oil pipe or a small oil pipe; however, the existing fixed gas lift valve working barrel, such as the gas lift valve working barrel provided by chinese patent No. ZL200420010499.6, adopts an external structure, i.e. the gas lift valve is installed in a valve sleeve outside the working barrel, which results in a large external diameter ratio of the working barrel, and cannot be assembled with a coiled tubing or a small tubing into a speed string to be lowered into an original completion string of an ultra-deep high-yield gas well for gas lift drainage, so how to reduce the external diameter of the gas lift valve working barrel, so that the gas lift valve working barrel can be lowered into the original completion string of the ultra-deep high-yield gas well, which is a production technical problem to be solved urgently today.
Disclosure of Invention
The utility model aims to provide a bridge type eccentric built-in positive gas lift valve which has the advantages that the gas lift valve is built in a bridge type eccentric counter bore of a working barrel, so that the outer diameter of the working barrel of the gas lift valve is greatly reduced, the working barrel of the gas lift valve can be lowered into an original well completion pipe column of an ultra-deep high-yield gas well, and the purpose of gas lift drainage by connecting the bridge type eccentric built-in positive gas lift valve through a continuous oil pipe or a small oil pipe can be realized.
The utility model realizes the purpose through the following technical scheme:
the utility model provides an eccentric built-in forward gas lift valve of bridge type, it comprises top connection, working barrel, lower clutch and gas lift valve, and the upper end of working barrel passes through the screw thread to be connected with the top connection, and the lower extreme of working barrel passes through the screw thread to be connected with the lower clutch, its characterized in that: the working barrel in the preparation have crescent fluid main passageway and the eccentric counter bore of bridge type, the upper portion preparation of the eccentric counter bore of bridge type has the gas lift valve bottom of gas lift valve to connect supporting screw thread, the gas lift valve passes through threaded connection and installs on the upper portion of the eccentric counter bore of bridge type, the bottom preparation of the eccentric counter bore of bridge type has the venthole with working barrel outside UNICOM.
The bridge type eccentric counter bore and the air outlet in the working barrel are communicated with an air inlet hole of the gas lift valve and an air outlet hole of the gas lift valve on the gas lift valve to form an air flow channel.
And a sealing ring a and a sealing ring b are respectively arranged between the upper end of the working barrel and the upper joint and between the lower end of the working barrel and the lower joint.
And the upper end of the upper joint and the lower end of the lower joint are respectively provided with a screw thread connected with a special connector for a continuous oil pipe or a small oil pipe coupling.
Compared with the prior art, the utility model has the beneficial effects that:
1. because the bridge eccentric structure is adopted in the working barrel of the bridge eccentric built-in positive gas lift valve, the main fluid channel is made into a crescent shape, the outer diameter of the working barrel is minimized, the flow area of the main fluid channel is maximized, and the phenomenon that the flow area of the main fluid channel is correspondingly reduced while the outer diameter of the working barrel is reduced to generate larger throttling pressure difference can be avoided.
2. The bridge type eccentric built-in forward gas lift valve thoroughly changes the arrangement mode of the gas lift valve in the traditional working barrel, fully utilizes the existing gas lift valve processing and debugging technical resources, has a simple integral structure, is mature and matched in technology, and greatly reduces the processing and debugging difficulty.
3. The mode that the gas lift valve is arranged in the bridge type eccentric counter bore of the working barrel is adopted, the outer diameter of the working barrel of the gas lift valve is greatly reduced, and therefore the bridge type eccentric built-in forward gas lift valve can be connected with a continuous oil pipe or a small oil pipe to form a speed pipe column to be put into an original well completion pipe column of an ultra-deep high-yield gas well for gas lift drainage, and the forward gas lift drainage requirement of the oil and gas field is met.
Drawings
FIG. 1 is a schematic view of a bridge-type eccentric built-in positive gas lift valve;
FIG. 2 is a schematic structural view of the cross-section A-A of FIG. 1;
FIG. 3 is a schematic diagram of a gas lift valve.
In the figure: 1. the gas lift valve comprises an upper connector, 2, a working barrel, 201, a fluid main channel, 202, a bridge type eccentric counter bore, 203, a gas outlet hole, 204, threads, 205, sealing rings a and 206, sealing rings b and 3, a lower connector, 4, a gas lift valve, 401, a gas lift valve gas inlet hole, 402, a gas lift valve gas outlet hole, 403 and a gas lift valve bottom connector.
Detailed Description
The bridge type eccentric built-in positive gas lift valve is described in detail below with reference to the accompanying drawings (see fig. 1-3):
the bridge type eccentric built-in forward gas lift valve is composed of an upper joint 1, a working cylinder 2, a lower joint 3 and a gas lift valve 4, wherein the upper end of the working cylinder 2 is connected with the upper joint 1 through threads, and the lower end of the working cylinder 2 is connected with the lower joint 3 through threads; a sealing ring a205 and a sealing ring b206 are respectively arranged between the upper end of the working barrel 2 and the upper joint 1 and between the lower end of the working barrel 2 and the lower joint 3; the upper end of the upper joint 1 and the lower end of the lower joint 3 are respectively provided with a screw thread connected with a special connector for a continuous oil pipe or a small oil pipe coupling; a crescent-shaped main fluid channel 201 and a bridge type eccentric counterbore 202 are manufactured in the working barrel 2, threads 204 matched with a gas lift valve bottom connector 403 of a gas lift valve 4 are manufactured on the upper portion of the bridge type eccentric counterbore 202, the gas lift valve 4 is connected and installed on the upper portion of the bridge type eccentric counterbore 202 through the threads 204, and a gas outlet hole 203 communicated with the outer side of the working barrel 2 is manufactured on the bottom of the bridge type eccentric counterbore 202. The bridge type eccentric counter bore 202 and the air outlet 203 in the working barrel 2 are communicated with the air inlet 401 and the air outlet 402 of the gas lift valve on the gas lift valve 4 to form an air flow channel.
When the bridge type eccentric built-in forward gas lift valve is used, firstly, a gas lift valve bottom connector 403 of a debugged gas lift valve 4 is installed in a thread 204 at the upper end of a bridge type eccentric counterbore 202 of a working cylinder 2, then an upper connector 1 and a lower connector 3 are respectively connected with the upper end and the lower end of the working cylinder 2 and are sealed through a sealing ring a205 and a sealing ring a206, and then the bridge type eccentric built-in forward gas lift valve is assembled; then the bridge type eccentric built-in forward gas lift valve is connected into a coiled tubing or a small oil pipe according to the designed depth, and then is put into the original well completion pipe column to form a gas lift pipe column; during gas lifting, after high-pressure gas is injected from the coiled tubing or the small oil pipe, the gas lifting valve is opened through the gas lifting valve air inlet 401, then the high-pressure gas enters the airflow channel formed by the communication of the bridge type eccentric counter bore 202 and the air outlet 203 from the air outlet 402 of the gas lifting valve, then the high-pressure gas enters the annular space formed by the coiled tubing or the small oil pipe and the original well completion pipe string from the air outlet 203, and liquid in the annular space is lifted to the ground to complete the gas lifting process.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (4)
1. The utility model provides an eccentric built-in forward gas lift valve of bridge type, it comprises top connection (1), working barrel (2), lower clutch (3) and gas lift valve (4), and the upper end of working barrel (2) is passed through the screw thread and is connected with top connection (1), and the lower extreme of working barrel (2) passes through the screw thread and is connected its characterized in that with lower clutch (3): the working barrel (2) is internally provided with a crescent-shaped fluid main channel (201) and a bridge type eccentric counter bore (202), the upper part of the bridge type eccentric counter bore (202) is provided with a thread (204) matched with a gas lift valve bottom connector (403) of a gas lift valve (4), the gas lift valve (4) is connected and installed on the upper part of the bridge type eccentric counter bore (202) through the thread (204), and the bottom of the bridge type eccentric counter bore (202) is provided with a gas outlet (203) communicated with the outer side of the working barrel (2).
2. The bridge eccentric built-in positive gas lift valve according to claim 1, wherein: the bridge type eccentric counter bore (202) and the air outlet hole (203) in the working barrel (2) are communicated with the air lifting valve air inlet hole (401) and the air lifting valve air outlet hole (402) on the air lifting valve (4) to form an air flow channel.
3. The bridge eccentric built-in positive gas lift valve according to claim 1, wherein: and a sealing ring a (205) and a sealing ring b (206) are respectively arranged between the upper end of the working barrel (2) and the upper joint (1) and between the lower end of the working barrel (2) and the lower joint (3).
4. The bridge eccentric built-in positive gas lift valve according to claim 1, wherein: the upper end of the upper joint (1) and the lower end of the lower joint (3) are respectively provided with a screw thread connected with a special connector for a continuous oil pipe or a small oil pipe coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121396192.4U CN215485971U (en) | 2021-06-23 | 2021-06-23 | Bridge type eccentric built-in forward gas lift valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121396192.4U CN215485971U (en) | 2021-06-23 | 2021-06-23 | Bridge type eccentric built-in forward gas lift valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215485971U true CN215485971U (en) | 2022-01-11 |
Family
ID=79720971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121396192.4U Active CN215485971U (en) | 2021-06-23 | 2021-06-23 | Bridge type eccentric built-in forward gas lift valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215485971U (en) |
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2021
- 2021-06-23 CN CN202121396192.4U patent/CN215485971U/en active Active
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