CN2869283Y - Cartridge container suspension pin withdraw-proof device - Google Patents
Cartridge container suspension pin withdraw-proof device Download PDFInfo
- Publication number
- CN2869283Y CN2869283Y CN 200520093697 CN200520093697U CN2869283Y CN 2869283 Y CN2869283 Y CN 2869283Y CN 200520093697 CN200520093697 CN 200520093697 CN 200520093697 U CN200520093697 U CN 200520093697U CN 2869283 Y CN2869283 Y CN 2869283Y
- Authority
- CN
- China
- Prior art keywords
- pin
- hollow plug
- central
- shear
- pipe1
- 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 linear hanger pin holder used for sidetracking and horizontal well completion with liner, comprising a central pipe1, a holding protective casing2,a shear pin3, a joint sleeve4 and a hollow plug assembly5, wherein the central pipe1 is connected with the hollow plug assemly5 through the joint sleeve4, on which the shear pin3 is provided in the pin hole on the upside and fixed in the pin hole on the outer surface of central pipe1; the holding protective casing2 is connected with the unit out of fixing position. Due to the advantages of reasonable design, simple structure and reliable function, the pin holder has can be used to insure the effective hanging length of shear pin during construction of sidetracking and horizontal well completion and increase the accuracy of compound pressure so as to effectively prevent the disconnection of hollow plug pin of linear hanger disconnected with central pipe caused by failure of pin and subsequent bad results.
Description
Technical field:
The utility model relates to a kind of accessory that is used for sidetracked hole, horizontal well liner completion instrument.
Background technology:
Along with the development of the continuity of oil field development time and sidetracked hole, horizontal well drilling technique, sidetracked hole, horizontal well drilling, completion interval of well a few days become to increasing.At sidetracked hole, in the horizontal well liner completion, extension hanger is important drilling liner cementing instrument, yet, the existing conventional extension hanger connects with taking engage thread on central tube is connected at hollow plug shear pin, owing to be subjected to the slim-hole size restrictions, it only is 2.5mm that pin hangs effective length, before instrument is gone into the well before maintenance and the construction during back-off, stopper slot end face and pin produce friction in the central tube rotary course, often cause pin to move back button, cause pin suspension contraction in length and pin to come off, cause the circulated influence of pressure reduction of the not obvious or hollow plug of bruising, it is descending in advance to cut off indivedual pins, finally causes being forbidden or replacing for amount the generation of empty phenomenon, brings bigger risk to cementing operation.
Summary of the invention:
The purpose of this utility model is to provide a kind of hollow plug shear pin of extension hanger that can effectively prevent in sidetracked hole, the construction of horizontal well liner completion to be connected the anti-unloading device of extension hanger pin that the generation pin moves back button and causes adverse consequences with central tube.
The utility model is to realize like this.The anti-unloading device of this kind pin is made up of central tube, anti-back protective sleeve, adapter sleeve, shear pin and hollow plug assembly; be provided with shear pin in the pin hole of adapter sleeve top and fix, this position outside suit and with the full anti-back protective sleeve that has been threaded of buckleing with central tube outer wall pin.This device is to set up an anti-back protective sleeve at the existing extension hanger hollow plug and the central tube connecting portion shear pin outside; this anti-back protective sleeve is taked to buckle engage thread entirely with hollow plug adapter sleeve and is connected; generation makes pin move back the friction of button when overcoming the central tube rotation with this, thereby prevents the adverse consequences that pin moves back button and caused.
The utility model is reasonable in design, simple in structure, reliable operation, utilize it can in sidetracked hole, horizontal well completion construction, guarantee effective suspension length of shear pin, improve the accuracy of composite pressure, thereby prevent that effectively the hollow plug pin of extension hanger is connected the adverse consequences that the generation pin moves back button and caused with central tube.
Description of drawings:
Figure is a general structure schematic diagram of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure; the utility model is made up of central tube 1, anti-back protective sleeve 2, shear pin 3, adapter sleeve 4, hollow plug assembly 5; its structure, assembled relation are as follows: be connected by adapter sleeve 4 between central tube 1 and the hollow plug assembly 5; be provided with shear pin 3 in the adapter sleeve 4 top pin holes and fix, this position outside suit and with the full anti-back protective sleeve 2 that has been threaded of buckleing with central tube 1 outer wall pin hole.Wherein, anti-back protective sleeve 2 is a sleeve, and its internal diameter and adapter sleeve 4 top external diameters match and inner headed face all is provided with screw thread from top to bottom, and external diameter is identical with adapter sleeve middle and lower part external diameter.Adapter sleeve 4 top peripheries are provided with the screw thread that matches with anti-back protective sleeve 2 inner headed faces.All the other each parts are identical with the conventional tail pipe hanger.
Claims (1)
1, the anti-unloading device of a kind of extension hanger pin; form by central tube (1), anti-back protective sleeve (2), shear pin (3), adapter sleeve (4), hollow plug assembly (5); it is characterized in that: be provided with shear pin (3) in the pin hole of adapter sleeve (4) top and fix, this position outside suit and with the full anti-back protective sleeve (2) that has been threaded of buckleing with central tube (1) outer wall pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093697 CN2869283Y (en) | 2005-11-16 | 2005-11-16 | Cartridge container suspension pin withdraw-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093697 CN2869283Y (en) | 2005-11-16 | 2005-11-16 | Cartridge container suspension pin withdraw-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869283Y true CN2869283Y (en) | 2007-02-14 |
Family
ID=37724218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520093697 Expired - Fee Related CN2869283Y (en) | 2005-11-16 | 2005-11-16 | Cartridge container suspension pin withdraw-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869283Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305044A (en) * | 2011-06-16 | 2012-01-04 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Flexible drilling-free self-grouting sealing box structure for tail pipe hanger |
-
2005
- 2005-11-16 CN CN 200520093697 patent/CN2869283Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305044A (en) * | 2011-06-16 | 2012-01-04 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Flexible drilling-free self-grouting sealing box structure for tail pipe hanger |
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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: 20070214 Termination date: 20101116 |