CN211777289U - Pressure opening closed well washing valve for pumping well - Google Patents
Pressure opening closed well washing valve for pumping well Download PDFInfo
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- CN211777289U CN211777289U CN202020109556.5U CN202020109556U CN211777289U CN 211777289 U CN211777289 U CN 211777289U CN 202020109556 U CN202020109556 U CN 202020109556U CN 211777289 U CN211777289 U CN 211777289U
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- sliding sleeve
- well
- shell
- joint
- rubber sealing
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Abstract
The utility model relates to the technical field of petroleum equipment, in particular to a pressure-opening closed well washing valve of a pumping well, which comprises an upper joint, a shell, a sliding sleeve and a lower joint; the upper joint and the lower joint are both connected with the shell, and the root of the external screw thread of the upper joint is sealed with the shell through a rubber sealing ring; a pressure spring and a sliding sleeve are arranged in the shell; the pressure spring is positioned between the lower end face of the upper joint and the upper end face of the sliding sleeve; the sliding sleeve, the shell and the lower joint are sealed through rubber sealing rings; the side wall of the lower joint is provided with a through hole; the utility model discloses can enough open the tubular column well-flushing passageway in the pit promptly, can close the tubular column well-flushing passageway again and play the inclosed effect of whole tubular column.
Description
Technical Field
The utility model relates to a petroleum equipment technical field specifically relates to a closed well-flushing valve is opened to beam-pumping unit well pressure.
Background
When the pumping well is produced, the well washing circulation paraffin removal is carried out on the underground pipe column and the rod column at regular intervals, or the well washing circulation paraffin removal is carried out in operation construction, high-temperature well washing water is injected into the well through a sleeve by adopting a high-pressure cleaning vehicle, and the paraffin on the wall of the oil pipe and the rod column of the pumping rod is cleaned and returns to the ground through the oil pipe. At present, the tool for circularly washing the inlet of a pumping well or a screw pump well usually adopts a screen pipe or a sand control screen pipe as a circulating tool for the inlet, and the tool for circularly washing the inlet of the well does not have the function of closing a tubing string, so that the space in the tubing string is communicated with the annular space in a casing string outside the tubing string. Therefore, it is necessary to design a pressure-opening sealed well-flushing valve for a pumping unit well, which is suitable for a pumping unit well and a screw pump well, and can open and close a pipe column well-flushing channel and play a role in sealing the whole pipe column underground.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a closed well-flushing valve is opened to beam-pumping unit well pressure to solve and not seal the tubular column behind the well-flushing, make the problem that the annular space in the oil pipe post and the outer casing string of oil pipe post communicates each other, so that the needs of the whole airtight technology of oil pumping tubular column, or with the supporting use of the inclosed supporting downhole tool of needs tubular column.
The utility model provides a technical scheme that its technical problem adopted is:
a pressure-opening closed well-flushing valve for a pumping well comprises an upper joint, a shell, a sliding sleeve and a lower joint; the upper joint and the lower joint are both connected with the shell, and the root of the external screw thread of the upper joint is sealed with the shell through a rubber sealing ring; a pressure spring and a sliding sleeve are arranged in the shell; the pressure spring is positioned between the lower end face of the upper joint and the upper end face of the sliding sleeve; the sliding sleeve, the shell and the lower joint are sealed through rubber sealing rings; the side wall of the lower joint is provided with a through hole.
Furthermore, the root of the external screw thread of the upper joint is provided with a rubber sealing ring groove for placing a rubber sealing ring, so that the upper joint and the shell are sealed conveniently.
Furthermore, the outer upper end and the outer lower end of the sliding sleeve are provided with rubber sealing ring grooves for placing rubber sealing rings, so that the sliding sleeve and the inner wall of the shell are sealed conveniently.
Furthermore, a rubber sealing ring groove is formed in the root of the external screw thread of the lower connector and used for placing a rubber sealing ring so as to facilitate sealing between the lower connector and the shell; the upper end of the lower joint is also provided with a rubber sealing ring groove which is sealed with the sliding sleeve.
Furthermore, the sliding sleeve is connected with the sliding sleeve seat, the inside of the sliding sleeve is of a hollow structure, and a liquid inlet hole is formed in the sliding sleeve to push the sliding sleeve.
The technical effects of the utility model:
compared with the prior art, the utility model discloses a closed well-flushing valve is opened to beam-pumping unit well pressure, can enough open the tubular column well-flushing passageway in the pit promptly, can close the tubular column well-flushing passageway again and play the inclosed effect of whole tubular column, specifically be through the mating action of top connection, lower clutch and pressure spring etc. under, well-flushing water gets into oil jacket annular space from well head sleeve pipe gate when washing the well, under pressure, well-flushing pressure is greater than the compressive force of pressure spring, the cover pressure produces pressure differential with the oil pressure, well liquid promotes the sliding sleeve through the feed liquor hole of well-flushing valve and upwards moves, open well liquid flow path and get into in the oil pipe; when the pressure difference generated by the sleeve pressure and the oil pressure after well flushing is consistent, the pressure spring pushes the sliding sleeve to move downwards to seat the sliding sleeve seat to close the pressure to open a well fluid flow channel of the closed well flushing valve.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
wherein, top connection 1, casing 2, sliding sleeve 3, lower clutch 4, rubber seal 5, pressure spring 6, through-hole 7, sliding sleeve seat 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Example 1:
the pressure-opening closed well washing valve for the pumping unit well comprises an upper joint 1, a shell 2, a sliding sleeve 3 and a lower joint 4; the upper joint 1 and the lower joint 4 are both connected with the shell 2, and the root of the external screw thread of the upper joint 1 is sealed with the shell 2 through a rubber sealing ring 5; a pressure spring 6 and a sliding sleeve 3 are arranged in the shell 2; the pressure spring 6 is positioned between the lower end face of the upper joint 1 and the upper end face of the sliding sleeve 3; the sliding sleeve 3, the shell 2 and the lower joint 4 are sealed through rubber sealing rings 5; the side wall of the lower joint 4 is provided with a through hole 7.
Furthermore, the root of the external screw thread of the upper joint 1 is provided with a rubber sealing ring groove for placing a rubber sealing ring 5, so that the upper joint 1 and the shell 2 are sealed.
Further, the outside upper end of sliding sleeve 3 and lower extreme are equipped with rubber seal groove for place rubber seal 5, so that seal between sliding sleeve 3 and the 2 inner walls of casing.
Further, a rubber sealing ring groove is formed in the root of the external screw thread of the lower joint 4 and used for placing a rubber sealing ring 5, so that the lower joint 4 and the shell 2 can be conveniently sealed; the upper end of the lower joint 4 is also provided with a rubber sealing ring groove which is sealed with the sliding sleeve 3.
Further, the sliding sleeve 3 is connected with the sliding sleeve seat 8, and the inside of the sliding sleeve 3 is of a hollow structure and is provided with a liquid inlet hole so as to push the sliding sleeve 3.
Furthermore, the pressure spring 6 bears 3 Mpa; the tensile resistance of the upper joint 1 and the lower joint 4 is 40T.
The working principle is as follows: the utility model discloses a closed well-flushing valve is opened to beam-pumping unit well pressure is used with supporting when the pumping well tubular column needs to seal, and when washing the well, well-flushing water gets into oil jacket annular space from well head sleeve pipe gate, under the pressure (well-flushing pressure is greater than the compressive force of pressure spring 6), the cover pressure produces pressure differential with the oil pressure, and well liquid opens the feed liquor hole of well-flushing valve through closed pressure and promotes sliding sleeve 3 to move upwards to open through-hole 7, open well liquid flow channel promptly and get into in the oil pipe; when the pressure difference generated by the casing pressure and the oil pressure after well washing is consistent, the pressure spring 6 pushes the sliding sleeve 3 to move downwards, the well pressure of the pumping unit is closed, a well fluid flow channel of the closed well washing valve is opened, and the through hole 7 is closed.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a pumping unit well pressure opens closed well-flushing valve which characterized in that: comprises an upper joint, a shell, a sliding sleeve and a lower joint; the upper joint and the lower joint are both connected with the shell, and the root of the external screw thread of the upper joint is sealed with the shell through a rubber sealing ring; a pressure spring and a sliding sleeve are arranged in the shell; the pressure spring is positioned between the lower end face of the upper joint and the upper end face of the sliding sleeve; the sliding sleeve, the shell and the lower joint are sealed through rubber sealing rings; the side wall of the lower joint is provided with a through hole.
2. The well pressure opening sealed wash valve of claim 1, wherein: and a rubber sealing ring groove is formed in the root part of the external screw thread of the upper joint.
3. The well pressure opening sealed wash valve of claim 1, wherein: and rubber sealing ring grooves are formed in the upper end and the lower end of the outer part of the sliding sleeve.
4. The well pressure opening sealed wash valve of claim 1, wherein: the root of the external screw thread of the lower connector is provided with a rubber sealing ring groove; the upper end of the lower joint is also provided with a rubber sealing ring groove.
5. The well pressure opening sealed wash valve of claim 1, wherein: the sliding sleeve is connected with the sliding sleeve seat, the inside of the sliding sleeve is of a hollow structure, and a liquid inlet hole is formed in the sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020109556.5U CN211777289U (en) | 2020-01-18 | 2020-01-18 | Pressure opening closed well washing valve for pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020109556.5U CN211777289U (en) | 2020-01-18 | 2020-01-18 | Pressure opening closed well washing valve for pumping well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211777289U true CN211777289U (en) | 2020-10-27 |
Family
ID=72893947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020109556.5U Active CN211777289U (en) | 2020-01-18 | 2020-01-18 | Pressure opening closed well washing valve for pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211777289U (en) |
-
2020
- 2020-01-18 CN CN202020109556.5U patent/CN211777289U/en active Active
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