CN2926483Y - Branch well coupling device - Google Patents
Branch well coupling device Download PDFInfo
- Publication number
- CN2926483Y CN2926483Y CN 200620091022 CN200620091022U CN2926483Y CN 2926483 Y CN2926483 Y CN 2926483Y CN 200620091022 CN200620091022 CN 200620091022 CN 200620091022 U CN200620091022 U CN 200620091022U CN 2926483 Y CN2926483 Y CN 2926483Y
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- Prior art keywords
- well
- piston4
- tube2
- piston
- thread
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- Expired - Fee Related
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Abstract
A branch well releasing device used in the branch well completion of the oil well in oil fields comprises an upper contact1, an inner tube2, an obturating ring I3, a piston4, an outer tube5, a gate piece6, a steel ball7, a shear pin8, an obturating ringII9, a mandril10, and a lower contactt11. The outer tube5 is connected with thread of completion well cylinder, the upper end of the inner tube2 is connected with the top contact1 and the lower end of which is connected with the lower contact11, the top contact1 is connected with a feed-in tube column, and the lower tube11 is connected with an internal intubation, all by means of thread. The obturating ring I3 is embedded in a seal groove on top of the piston4, the obturating ringII9 is embedded in the seal groove at bottom of the piston4, the inner tube2 is embedded in the piston4, all fixed by the shear pin8. The steel ball7 is projected on the internal steps of the piston4, an ejector pin is connected with thread of the inner tube2, the lock block is inlayed by the inner tube2, and the lock block is connected with the thread of the outer tube5. The device provides a solution for smooth detachment of the feed-in tube column from the completion well under current technology and for well cementing after releasing and for extensive operation of branch completion well of oil well in oil fields.
Description
Technical field:
The utility model relates to the Multilateral Wells releasing device that the Multilateral Wells completion is used in a kind of oilfield oil well.
Background technology:
At present the Multilateral Wells releasing device that uses in oil field adopts common releasing device, and it can not guarantee completion tubular column and the smooth disengaging of sending into tubing string in implementation process, also stay step on completion tubular column, finishes and can not realize the cementing operation after giving up.
Summary of the invention:
The utility model purpose is to provide a kind of Multilateral Wells releasing device, and it has solved can not guaranteeing completion tubular column and sending into the smooth disengaging of tubing string of existing in the prior art, also stays step on completion tubular column, can not realize the problem of cementing after giving up.
The technical scheme that its technical problem that solves the utility model adopts is: the Multilateral Wells releasing device is made up of top connection, interior pipe, sealing ring I, piston, outer tube, lock dog, steel ball, shear pin, sealing ring II, push rod, lower contact; Outer tube is threaded with completion tubular column, connect on the interior pipe under the joint and connect lower contact, pick in the top connection and connect interpolation pipe under tubing string, the lower contact each connects to be and is threaded, sealing ring I is inserted in the seal groove of piston upper end, sealing ring II is inserted in the seal groove of piston lower end, piston set in the interior pipe, the two is fixed by shear pin, and steel ball is thrown on the interior step of piston, and push rod is connected with Internal Pipe Thread, be inlaid with lock dog on the interior pipe, lock dog is connected with external pipe thread.In construction, this device is connected on Multilateral Wells completion tubular column hanger lower end, tubing string down after give allocation pitching suppress, when pressure reaches the setting pressure of shear pin, shear pin is cut off, descent of piston is to the push rod place, and lock dog inwardly slides under the thrust in outer tube in the groove of piston, and interior pipe and outer tube are separated and realized giving up; Steel ball is opened the mud circulation passage by push rod jack-up simultaneously, can continue well cementing operation.
The new beneficial effect of this practicality is, this apparatus structure is simple, can guarantee completion tubular column and the smooth disengaging of sending into tubing string, can not stay step on completion tubular column, can realize the cementing operation after giving up finishing.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure, 1, top connection, 2, interior pipe, 3, sealing ring I, 4, piston, 5, outer tube, 6, lock dog, 7, steel ball, 8, shear pin, 9, sealing ring II, 10, push rod, 11, lower contact.
The specific embodiment:
As shown in the figure, this device is made up of top connection 1, interior pipe 2, sealing ring I3, piston 4, outer tube 5, lock dog 6, steel ball 7, shear pin 8, sealing ring II9, push rod 10, lower contact 11; Outer tube 5 is threaded with completion tubular column, connect joint on the interior pipe 2 and connect lower contact 11 1 time, pick in the top connection 1 and connect interpolation pipe for 11 times into tubing string, lower contact each connects to be and is threaded, sealing ring I3 is inserted in the piston 4 upper end seal grooves, sealing ring II9 is inserted in the piston 4 lower end seal grooves, piston sets 4 in the interior pipe 2, the two is fixing by shear pin 8, steel ball 7 is thrown on the interior step of piston 4, push rod 10 is threaded with interior pipe 2, be inlaid with lock dog 6 on the interior pipe 2, lock dog 6 is threaded with outer tube 5.
Claims (1)
1, a kind of Multilateral Wells releasing device, by top connection (1), interior pipe (2), sealing ring I (3), piston (4), outer tube (5), lock dog (6), steel ball (7), shear pin (8), sealing ring II (9), push rod (10), lower contact (11) is formed, it is characterized in that: outer tube (5) is threaded with completion tubular column, connect on the interior pipe (2) and connect lower contact (11) under the joint (1), top connection is picked into tubing string on (1), each connects to be and is threaded to connect interpolation pipe under the lower contact (11), sealing ring I (3) is inserted in the seal groove of piston (4) upper end, sealing ring II (9) is inserted in the seal groove of piston (4) lower end, interior pipe (2) interior piston set (4), the two is fixing by shear pin (8), steel ball (7) is thrown on the interior step of piston (4), push rod (10) is threaded with interior pipe (2), be inlaid with lock dog (6) on the interior pipe (2), lock dog (6) is threaded with outer tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091022 CN2926483Y (en) | 2006-05-23 | 2006-05-23 | Branch well coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091022 CN2926483Y (en) | 2006-05-23 | 2006-05-23 | Branch well coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926483Y true CN2926483Y (en) | 2007-07-25 |
Family
ID=38280727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620091022 Expired - Fee Related CN2926483Y (en) | 2006-05-23 | 2006-05-23 | Branch well coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926483Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236220A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | One kind is exempted to be buckled to rotary tail running tool and method |
-
2006
- 2006-05-23 CN CN 200620091022 patent/CN2926483Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236220A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | One kind is exempted to be buckled to rotary tail running tool and method |
| CN109236220B (en) * | 2018-11-28 | 2023-09-12 | 中国石油天然气集团有限公司 | Back-off-free rotary tail pipe running tool and method |
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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: 20070725 Termination date: 20110523 |