CN2893127Y - Hydraulic safety joint - Google Patents
Hydraulic safety joint Download PDFInfo
- Publication number
- CN2893127Y CN2893127Y CN 200620090692 CN200620090692U CN2893127Y CN 2893127 Y CN2893127 Y CN 2893127Y CN 200620090692 CN200620090692 CN 200620090692 CN 200620090692 U CN200620090692 U CN 200620090692U CN 2893127 Y CN2893127 Y CN 2893127Y
- Authority
- CN
- China
- Prior art keywords
- joint
- pin
- spring
- safety joint
- horizontal well
- 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
A new hydraulic safety joint for repairing the horizontal well in the oil field consists of an upper joint 1, a pin 2, an internal sleeve 3, a sealing ring 4, a locking block 5, a press hat 6, a spring 7 and a lower joint 8. The upper joint 1 and the lower joint 8 are connected by the locking block 5, while the upper joint 1 is fixedly connected with the internal sleeve 3 by the pin and also connected with the pin 2, the press hat 6 and the lower joint 8 by the screw thread and the spring 7 is placed in the spring slot of the press hat 6. The safety joint solves the problems of that the existing well bore curvature is large for the horizontal well in the existing technology and the weight of torque and pipe column is hard to preferably be passed down when repairing the well so the safety joint is hard to trip out and the success rate is low. The utility model can be widely applied to the repair of the horizontal well in the oil field.
Description
Technical field:
The utility model relates to a kind of novel hydraulic safety joint that a kind of oilfield horizontal well workover treatment is used.
Background technology:
Oilfield horizontal well is in the well workover process, in case tubing string is blocked or instrument moves back to come out, can throw off from safety joint, trips out the well workover tubing string, and the accident that prevents is complicated.Safety joint commonly used has two kinds of reverse buckling type and shear pin formulas, in horizontal well, because hole curvature is big, moment of torsion and tubing string weight are difficult to hand on preferably during well workover, therefore, these two kinds of safety joints difficulty when throwing off is bigger, and success rate is low, and there is complex structure in some domestic hydraulic safe joints at present, also there is certain limitation on the function, the machining accuracy height is subjected to the casing annulus limitation big, can not transfer torque etc. problem.
Summary of the invention:
The utility model purpose is to provide a kind of novel hydraulic safety joint, this safety joint solved exist in the prior art in horizontal well, because hole curvature is big, moment of torsion and tubing string weight are difficult to relay preferably during well workover, therefore safety joint difficulty when throwing off is bigger, the problem that success rate is low.
The utility model is achieved in that
This kind hydraulic safe joint is made up of top connection, pin, interior cover, sealing ring, lock dog, pressure cap, spring, lower contact; Top connection is connected with lock dog with lower contact, top connection with in apply mechanically dowel fixes, top connection and pin, pressure cap and lower contact are screwed connection, spring are put into the spring groove of pressure cap.This hydraulic safe joint adopts lock dog to connect, usually be connected on the upper end of fishing tool, when the sand washing milling is salvaged,, in tubing string, drop into a steel ball or plug in case occur that the well casing post is blocked or fishing tool when moving back not open, under hydraulic action, the pin that puts in cutting off, cover is descending in promoting, spring and upper lifting pipe post to the acting in conjunction of lock dog lateral force under, lock dog is released, and realizes the safety disengagement.
The new beneficial effect of this practicality is, this joint design is simple, swift to operate, and is easy to use, dependable performance, and this safety joint has overcome the restriction of horizontal well special construction, has improved the disengagement success rate.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure, 1, top connection, 2, pin, 3, interior cover, 4, sealing ring, 5, lock dog, 6, pressure cap, 7, spring, 8, lower contact.
The specific embodiment:
As shown in the figure, this joint is made up of top connection 1, pin 2, interior cover 3, sealing ring 4, lock dog 5, pressure cap 6, spring 7, lower contact 8; Top connection 1 is connected with lower contact 8 usefulness lock dogs 5, and top connection 1 is used dowel fixes with interior cover 3, and top connection 1 is screwed connection with pin 2, pressure cap 6 with lower contact 8, and spring 7 is put into the spring groove of pressure cap 6.
Claims (1)
1, a kind of novel hydraulic safety joint, form by top connection (1), pin (2), interior cover (3), sealing ring (4), lock dog (5), pressure cap (6), spring (7), lower contact (8), it is characterized in that: top connection (1) is connected with lock dog (5) with lower contact (8), top connection (1) is used dowel fixes with interior cover (3), top connection (1) is screwed connection with pin (2), pressure cap (6) with lower contact (8), and spring (7) is put into the spring groove of pressure cap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090692 CN2893127Y (en) | 2006-05-01 | 2006-05-01 | Hydraulic safety joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090692 CN2893127Y (en) | 2006-05-01 | 2006-05-01 | Hydraulic safety joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893127Y true CN2893127Y (en) | 2007-04-25 |
Family
ID=38061293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090692 Expired - Fee Related CN2893127Y (en) | 2006-05-01 | 2006-05-01 | Hydraulic safety joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893127Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949269A (en) * | 2010-10-15 | 2011-01-19 | 大庆油田有限责任公司 | Safety joint for switching off hydraulic pressure |
| CN103256011A (en) * | 2013-06-04 | 2013-08-21 | 四川宏华石油设备有限公司 | Non-rotary connector used for connecting downhole electric module |
| CN104405295A (en) * | 2014-10-23 | 2015-03-11 | 中国石油集团长城钻探工程有限公司 | Coiled tubing drilling anti-torque device |
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
-
2006
- 2006-05-01 CN CN 200620090692 patent/CN2893127Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949269A (en) * | 2010-10-15 | 2011-01-19 | 大庆油田有限责任公司 | Safety joint for switching off hydraulic pressure |
| CN103256011A (en) * | 2013-06-04 | 2013-08-21 | 四川宏华石油设备有限公司 | Non-rotary connector used for connecting downhole electric module |
| CN103256011B (en) * | 2013-06-04 | 2016-06-15 | 四川宏华石油设备有限公司 | A kind of non-rotating joint connected for down-hole electrical module |
| CN104405295A (en) * | 2014-10-23 | 2015-03-11 | 中国石油集团长城钻探工程有限公司 | Coiled tubing drilling anti-torque device |
| CN104405295B (en) * | 2014-10-23 | 2016-08-24 | 中国石油集团长城钻探工程有限公司 | A kind of anti-torquer of pipe drilling well continuously |
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
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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: 20070425 Termination date: 20110501 |