CN2923992Y - Self-locking rubber cork - Google Patents
Self-locking rubber cork Download PDFInfo
- Publication number
- CN2923992Y CN2923992Y CN 200620121483 CN200620121483U CN2923992Y CN 2923992 Y CN2923992 Y CN 2923992Y CN 200620121483 CN200620121483 CN 200620121483 CN 200620121483 U CN200620121483 U CN 200620121483U CN 2923992 Y CN2923992 Y CN 2923992Y
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- CN
- China
- Prior art keywords
- lock
- self
- locking
- angle
- tapered end
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- Expired - Fee Related
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Abstract
The utility model relating to a cementing slush-displacement rubber stopper applied in oil and gas field exploration of petroleum industry in particularly relates to a self-lock rubber stopper. The utility model mainly comprises a rubber stopper (1), an O-shaped gasket ring (2), a lock head (3), a self-lock steel ball (4), a self-lock seat (5), a huge gasket pad (6). The inner cavity of the bottom end of self-lock seat (5) is processed to be a tapered surfaced with a self-lock angle. The tapered surface is matched with the bottom end of the lock head (3); A plurality of holes are arranged equally on the lock head (3), an angle formed by the axes of the holes and the lock head body equals to the self-lock angle, a plurality of steel balls are positioned in the holes. The lock head (3) is connected with the rubber plunger (1) in a screwed way, the huge gasket pad (6) is sleeved with the self-lock seat (5). The utility model adopting the scheme of that: the steel balls in the lock head match to the tapered surface with a self-lock angle on the self-lock seat, thus realizing the self-lock function and improving the stability of rubber stopper self-lock.
Description
Technical field
The utility model relates to the cementing tool that oil-gas field development uses in the petroleum industry, particularly a kind of self-locking plug.
Background technology
In the well cementing operation process, the normal self-locking plug with multistage dish wing that adopts is used for isolating displacement fluid (or drilling fluid) and cement paste, prevents to move on the sleeve pipe plug (and cement paste backflow) and finishes " bruising " and the device of " self-locking ".Therefore the self-locking reliability of self-locking plug is very important, the structure of conventional self-locking plug is that the lock head bit strip has a retainer on the plug, rely on the jagged hangnail on retainer and the lock to carry out self-locking, but in use, often exist problems such as retainer fracture or retainer can not open, cause the plug self-locking to lose efficacy, thereby influence cementing quality, these problems are perplexing well cementing operation person always, and therefore existing self-locking plug device is anxious to be waited to improve and develop.
Summary of the invention
The purpose of this utility model is to provide a kind of reliability that can improve the plug self-locking, thereby improves the self-locking plug device of cementing quality.
The utility model is processed as the conical surface with self-locking angle mainly by plug 1, O RunddichtringO 2, tapered end 3, self-locking steel ball 4, form from lock 5, huge sealing mat 6 from lock 5 bottom inner chambers, and this conical surface and tapered end 3 bottoms are suitable; Be evenly equipped with several holes on the tapered end 3, angle equals from the locking angle between the axis of axially bored line and tapered end body, and steel ball is installed in the hole; Tapered end 3 adopts with plug 1 and is threaded, and is set with huge sealing mat 6 on lock 5.
The utility model adopts the steel ball of tapered end the inside and have a realization self-locking that matches of the conical surface from the locking angle on lock, has improved the reliability of plug self-locking.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing 1.
The utility model is processed as the conical surface with self-locking angle mainly by plug 1, O RunddichtringO 2, tapered end 3, self-locking steel ball 4, form from lock 5, huge sealing mat 6 from lock 5 bottom inner chambers, and this conical surface and tapered end 3 bottoms are suitable; Be evenly equipped with several holes on the tapered end 3, angle equals from the locking angle between the axis of axially bored line and tapered end body, and steel ball is installed in the hole; Tapered end 3 adopts with plug 1 and is threaded, and is set with huge sealing mat 6 on lock 5.
During use self-locking steel ball 4 packed in the tapered end 3 that has the inclined-plane, tapered end 3 links together with plug 1 then. when setting of casing, will be contained in the design choke position, when well cementation from lock 5, plug is sent to this position, when tapered end contacted with lock, the self-locking steel ball made progress along inclined hole, made tapered end reach the lock bottom smoothly, steel ball falls, when down-hole pressure upwards promoted tapered end, steel ball was pinned by the conical surface of lock bottom, thereby pinned the effect that plug plays unidirectional choked flow.
Claims (1)
1, a kind of self-locking plug, mainly by plug (1), O RunddichtringO (2), tapered end (3), self-locking steel ball (4), form from lock (5), huge sealing mat (6), it is characterized in that: inner chamber is processed as the conical surface with self-locking angle from lock (5) bottom, and this conical surface and tapered end (3) bottom are suitable; Tapered end is evenly equipped with several holes on (3), and angle equals from the locking angle between the axis of axially bored line and tapered end body, and steel ball is installed in the hole; Tapered end (3) adopts with plug (1) and is threaded, and is set with huge sealing mat (6) on lock (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620121483 CN2923992Y (en) | 2006-06-29 | 2006-06-29 | Self-locking rubber cork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620121483 CN2923992Y (en) | 2006-06-29 | 2006-06-29 | Self-locking rubber cork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2923992Y true CN2923992Y (en) | 2007-07-18 |
Family
ID=38260424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620121483 Expired - Fee Related CN2923992Y (en) | 2006-06-29 | 2006-06-29 | Self-locking rubber cork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2923992Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900207A (en) * | 2009-05-31 | 2010-12-01 | 北京环能海臣科技有限公司 | Hydraulic self-locking hoop skirt sealing rubber ring |
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN106837238A (en) * | 2016-12-21 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of self-locking plug |
| CN112127826A (en) * | 2020-10-19 | 2020-12-25 | 西京学院 | Setting and unsealing mechanism for underground sealing short section |
-
2006
- 2006-06-29 CN CN 200620121483 patent/CN2923992Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900207A (en) * | 2009-05-31 | 2010-12-01 | 北京环能海臣科技有限公司 | Hydraulic self-locking hoop skirt sealing rubber ring |
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN106837238A (en) * | 2016-12-21 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of self-locking plug |
| CN106837238B (en) * | 2016-12-21 | 2019-05-07 | 中国石油天然气股份有限公司 | A kind of self-locking rubber plug |
| CN112127826A (en) * | 2020-10-19 | 2020-12-25 | 西京学院 | Setting and unsealing mechanism for underground sealing short section |
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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: 20070718 Termination date: 20130629 |