CN201953351U - Sliding sleeve oil drainage device - Google Patents
Sliding sleeve oil drainage device Download PDFInfo
- Publication number
- CN201953351U CN201953351U CN2011200360047U CN201120036004U CN201953351U CN 201953351 U CN201953351 U CN 201953351U CN 2011200360047 U CN2011200360047 U CN 2011200360047U CN 201120036004 U CN201120036004 U CN 201120036004U CN 201953351 U CN201953351 U CN 201953351U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- central tube
- oil
- top connection
- drainage device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a sliding sleeve oil drainage device which is an underground tool capable of draining crude oil in an oil pipe when being used for withdrawing a tubular column during underground operation in an oil field. An upper joint is in threaded connection with a central tube, a sliding sleeve is sheathed on the central tube and forms sealing with the central tube by an O-shaped ring, a step on the external cylindrical surface of the sliding sleeve is sheathed in an inner hole at the lower part of the upper joint, and forms sealing by an O-shaped ring, and then connection is formed by a shear pin.
Description
Affiliated technical field
The utility model relates to a kind of bleeder that is used for oil field down-hole string draining, especially is applicable to the sliding sleeve bleeder that requires to suppress draining.
Background technology
When the oilfield downhole operation lift pipe string, the crude oil in the oil pipe can be taken out of well head, pollutes, and makes troubles for the work of operating worker, so a kind of bleeder that can release oil pipe crude oil when being used for lift pipe string is badly in need of in the oil field.
Summary of the invention
When solving the oilfield downhole operation lift pipe string, the crude oil in the oil pipe can be taken out of well head, pollutes, in order to improve the working environment of operating worker.The utility model provides a kind of sliding sleeve bleeder that can release oil pipe crude oil when being used for lift pipe string.
The technical scheme that its technical problem that solves the utility model adopts is: the sliding sleeve bleeder, top connection is threaded with central tube, sliding sleeve is enclosed within on the central tube, and by O shape circle and central tube formation sealing, the external cylindrical surface step of sliding sleeve is enclosed within the bottom endoporus of top connection, and, connect by shear pin formation by O shape circle formation sealing.Central tube is provided with the draining hole, and the inner oil tube screw thread is arranged at top connection top, and outer tubing round thread is arranged at the central tube bottom, is connected with oil pipe when being used to go into the well.
During use, down to the downhole designs position, this moment, the sliding sleeve bleeder was in sealing state, can bear the pressure from the outside with the sliding sleeve bleeder in elder generation, also can bear certain internal pressure by shear pin, when needs are carried pipe column oil drainage, by in tubing string, suppressing, when sliding sleeve bleeder inside and outside differential pressure reach shear pin cut off pressure the time, shear pin is cut off, sliding sleeve moves down, and at this moment, the liquid in the tubing string can leak into the oil jacket annular space by the draining hole of central tube.
The beneficial effects of the utility model are, provide a kind of when the oilfield downhole operation lift pipe string, can release the sliding sleeve bleeder of crude oil in the oil pipe.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is a structural representation of the present utility model.
In the accompanying drawing 1, top connection; 2, central tube; 3, sliding sleeve; 4, shear pin; 5, O shape circle.
The specific embodiment
As shown in drawings, top connection 1 is threaded with central tube 2, and sliding sleeve 3 is enclosed within on the central tube 2, and by O shape circle 5 and central tube 2 formation sealings, the external cylindrical surface step of sliding sleeve 3 is enclosed within the bottom endoporus of top connection 1, and forms sealing by O shape circle 5, forms by shear pin 4 to connect.
Claims (2)
1. sliding sleeve bleeder, top connection is threaded with central tube, and sliding sleeve is enclosed within on the central tube, and by O shape circle and central tube formation sealing, the external cylindrical surface step of sliding sleeve is enclosed within the bottom endoporus of top connection, and forms sealing by O shape circle, forms by shear pin to connect.
2. sliding sleeve bleeder according to claim 1 is characterized in that: central tube is provided with the draining hole, and the inner oil tube screw thread is arranged at top connection top, and outer tubing round thread is arranged at the central tube bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200360047U CN201953351U (en) | 2011-01-29 | 2011-01-29 | Sliding sleeve oil drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200360047U CN201953351U (en) | 2011-01-29 | 2011-01-29 | Sliding sleeve oil drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953351U true CN201953351U (en) | 2011-08-31 |
Family
ID=44497468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200360047U Expired - Fee Related CN201953351U (en) | 2011-01-29 | 2011-01-29 | Sliding sleeve oil drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201953351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843271A (en) * | 2018-09-14 | 2018-11-20 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of drainage device |
| CN111677481A (en) * | 2020-06-08 | 2020-09-18 | 辽宁新华仪器有限公司 | High-pressure oil drainage tool |
-
2011
- 2011-01-29 CN CN2011200360047U patent/CN201953351U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843271A (en) * | 2018-09-14 | 2018-11-20 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of drainage device |
| CN108843271B (en) * | 2018-09-14 | 2024-04-05 | 天津大港油田石油工程研究院钻采技术开发有限公司 | Oil drainage device |
| CN111677481A (en) * | 2020-06-08 | 2020-09-18 | 辽宁新华仪器有限公司 | High-pressure oil drainage tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20120129 |