CN201420517Y - Liner hanger - Google Patents
Liner hanger Download PDFInfo
- Publication number
- CN201420517Y CN201420517Y CN2009200415428U CN200920041542U CN201420517Y CN 201420517 Y CN201420517 Y CN 201420517Y CN 2009200415428 U CN2009200415428 U CN 2009200415428U CN 200920041542 U CN200920041542 U CN 200920041542U CN 201420517 Y CN201420517 Y CN 201420517Y
- Authority
- CN
- China
- Prior art keywords
- piston
- central tube
- upper joint
- top connection
- joint
- 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 discloses a liner hanger, which comprises an upper joint, a central tube, a slip a locking piece, a piston, a setting shear pin, a piston sleeve, a sealing ring and a lower joint, and is characterized in that the upper joint is connected with the central tube; the piston is arranged in the piston sleeve and is then sleeved on the central tube; a liquid inlet hole is arranged between the piston and the lower joint; the slip is arranged below the cone bevel of the upper joint and is connected on the central tube through the locking piece; the lower end of the central tube is connected with the lower joint through screw thread of a 43/4 tapered tube; the lower end of the upper joint is the cone bevel which is convenient for distracting the slip through the cone bevel under the pushing of the piston. When in oil well setting and well cementing according to technology requirement, a cementing truck presses the pressure liquid to enter a hydraulic chamber which is formed bythe upper joint and the piston from the liquid inlet hole of the central tube, the pressure liquid pushes the piston and the upper joint with the cone bevel to descend, the slip is distracted radially along the cone bevel of the upper joint, and a hanging string is anchored.
Description
Technical field
The utility model relates to the cementing unit in a kind of underground work, is specifically related to a kind of extension hanger.
Background technology
Extension hanger is the crux of drilling liner cementing, bore the continuous development of technology along with oil, the extension hanger cementing technology is aspect the complicated well drillng operation problem of solution, brought into play enormous function, adopt extension hanger can improve down-hole high temperature greatly, the high pressure drilling hydraulics, reduce the load of rig and drilling tool, be drilling well to darker field, the reliable technique assurance is provided, but, the extension hanger of prior art in use still has a series of weak point, exists upper lifting pipe post difficulty, uses fixing pin that slips and slip spider are fixed on design on the central tube, in use cause the fault that comes off or be shifted easily, and make complexity, use inconvenience, greatly affect production efficiency.
Summary of the invention
The purpose of this utility model is to provide a kind of extension hanger, it has fundamentally solved all weak points of the extension hanger existence of using in the existing technology, avoided the difficulty of upper lifting pipe post, improved original extension hanger internal construction, to guarantee cementing quality.
The technical solution of the utility model is: a kind of extension hanger, comprise: top connection, central tube, slips, lock dog, piston, set shear pin, piston bush, sealing ring, lower contact, it is characterized in that: top connection is connected with central tube, piston is contained in the piston bush, be nested on the central tube then, central tube has designed inlet opening between piston and lower contact, below the cone inclined-plane of top connection is slips, is connected on the central tube with lock dog, adopts 43/4 tapering gas thread to be connected between central tube lower end and the lower contact, described top connection, its lower end is a cone inclined-plane, is convenient to slips under the promotion of piston, struts through the cone inclined-plane.
When technological requirement is carried out setting of oil well or is cemented the well, cementing truck is suppressed the inlet opening of pressure liquid from central tube is entered in the hydraulic cavities that is formed by top connection, piston, pressure liquid promotes piston and is with the top connection on cone inclined-plane descending together, slips radially struts along the cone inclined-plane of top connection, and tubing string is hung in grappling.
Usefulness of the present utility model is, simple in structure, volume is little, easy to use, adopt lock dog to connect slips to central tube, make and hang firmly, the cone inclined-plane, lower end of top connection and this top connection is an one, make down accommodatingly, solved the up and down tubing string difficulty of existing extension hanger, slips strut the back easily displacement take off the problem that extensions waits cementing quality.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model
In Fig. 1: 1-top connection, 2-central tube, 3-slips, 4-lock dog, 5-piston, 6-set shear pin, 7-piston bush, 8,9,10-sealing ring, 11-lower contact.
The specific embodiment
Further specify the specific embodiment of the present utility model below in conjunction with Figure of description.
A kind of extension hanger of the utility model, comprise: top connection 1, central tube 2, slips 3, lock dog 4, piston 5, set shear pin 6, piston bush 7, sealing ring 8,9,10, lower contact 11, it is characterized in that: top connection 1 is connected with central tube 2, piston 5 is contained in the piston bush 7, be nested into then on the central tube 2, central tube 2 has designed inlet opening between piston 5 and lower contact 11, be slips 3 below the cone inclined-plane of top connection 1, be connected on the central tube 2 with lock dog 4, adopt 43/4 tapering gas thread to be connected between the lower end of central tube 2 and the lower contact 11, described top connection 1, its lower end is a cone inclined-plane, is convenient to slips 3 under the promotion of piston 5, struts through the cone inclined-plane of top connection.
When technological requirement is carried out setting of oil well or is cemented the well, cementing truck is suppressed the inlet opening of pressure liquid from central tube 2 is entered in the hydraulic cavities that is formed by top connection 1, piston 5, pressure liquid promotes piston 5 and is with the top connection 1 of cone face descending together, slips 3 radially struts along the cone inclined-plane of top connection 1, and tubing string is hung in grappling.
Claims (1)
1, a kind of extension hanger, comprise: top connection, central tube, slips, lock dog, piston, set shear pin, piston bush, sealing ring, lower contact, it is characterized in that: top connection is connected with central tube, piston is contained in the piston bush, be nested on the central tube then, central tube has designed inlet opening between piston and lower contact, below the cone inclined-plane of top connection is slips, is connected on the central tube with lock dog, adopts 43/4 tapering gas thread to be connected between central tube lower end and the lower contact, described top connection, its lower end is a cone inclined-plane, is convenient to slips under the promotion of piston, struts through the cone inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200415428U CN201420517Y (en) | 2009-03-27 | 2009-03-27 | Liner hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200415428U CN201420517Y (en) | 2009-03-27 | 2009-03-27 | Liner hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201420517Y true CN201420517Y (en) | 2010-03-10 |
Family
ID=41807169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200415428U Expired - Fee Related CN201420517Y (en) | 2009-03-27 | 2009-03-27 | Liner hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201420517Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628835A (en) * | 2013-12-10 | 2014-03-12 | 中国石油集团西部钻探工程有限公司 | Internally pushed hanger |
| CN105507836A (en) * | 2014-09-26 | 2016-04-20 | 中国石油化工股份有限公司 | Drilling liner hanger and string type well cementing system comprising same |
-
2009
- 2009-03-27 CN CN2009200415428U patent/CN201420517Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628835A (en) * | 2013-12-10 | 2014-03-12 | 中国石油集团西部钻探工程有限公司 | Internally pushed hanger |
| CN103628835B (en) * | 2013-12-10 | 2016-06-29 | 中国石油集团西部钻探工程有限公司 | Interior pushing-type hanger |
| CN105507836A (en) * | 2014-09-26 | 2016-04-20 | 中国石油化工股份有限公司 | Drilling liner hanger and string type well cementing system comprising same |
| CN105507836B (en) * | 2014-09-26 | 2018-07-13 | 中国石油化工股份有限公司 | Extension hanger and pipe column type cementing system including it |
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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: 20100310 Termination date: 20100327 |