CN2672278Y - Safety anchoring device for small well hole - Google Patents
Safety anchoring device for small well hole Download PDFInfo
- Publication number
- CN2672278Y CN2672278Y CN 03214346 CN03214346U CN2672278Y CN 2672278 Y CN2672278 Y CN 2672278Y CN 03214346 CN03214346 CN 03214346 CN 03214346 U CN03214346 U CN 03214346U CN 2672278 Y CN2672278 Y CN 2672278Y
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- CN
- China
- Prior art keywords
- anchor
- utility
- model
- well hole
- small 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
The utility model is a safety anchoring device for small well hole which is matched with an oil field repairing well operation for small well hole fracture. The utility model technically adopts that in the process of pressure testing and fracturing, the high pressure liquid is driven in the utility model, an anchor palm compresses a pressing spring at the action of high pressure, and the anchor palm is pushed to the sheathing pipe wall and clamped at the inner wall of the sheathing pipe to overcome the axial thrust in the working operation, so the utility model has the function of fixing position. After the pressure is released, the pressing spring recovers back, the anchor palm takes back, and a tubular column can be lift up smoothly. The utility model can solve the fixed problem of small well hole fracture of underground tubular column, and the utility model can be widely used in oil field workover treatment for small well hole fracture.
Description
Technical field:
The utility model relates to a kind of oil well repairing operation slim-hole pressure break matched " slim-hole safety anchor ".
Background technology:
At present, fracturing technique is by oil field extensive use both at home and abroad, and the general conventional safe anchor (hydraulic anchor) that uses of underground work instrument has righting type, baffle-type, circlip type, is applicable to 7 " and 5 " well.The slim-hole anchor is used in internal diameter 86mm (4 o'clock sleeve pipes), uses in the well, and main effect is to prevent in the fracturing process packer play up and down.Current slim-hole fracturing technique is abroad used, China is in the starting stage, the development of slim-hole pressure break downhole tool also is in the starting stage at home, therefore, be badly in need of a kind of instrument that is applicable to the construction of slim-hole fracturing technique of development, the utility model be exactly a kind of " the slim-hole safety anchor " newly developed it can effectively solve the fixation problem of slim-hole fractured well lower tubular column.
The utility model content:
Since domestic do not have as yet at present be applicable to that working safe anchor under the slim-hole fractured well solves the fixation problem of slim-hole fractured well lower tubular column.The utility model provides a kind of " slim-hole safety anchor ", and it can effectively solve the fixation problem of slim-hole fractured well lower tubular column.
The technical scheme that its technical problem that solves the utility model adopts is: the maximum outside diameter of at first determining slim-hole safety anchor at slim-hole requirement dimensionally is Φ 80mm, aiming at casing inner diameter is the fractured well usefulness of Φ 86mm, adopt the operating principle of conventional hydraulic anchor, optimize hydraulic anchor part parameter, make each part in this anchor satisfy the construction intensity requirement, in the anchor fluke design, carry out a large amount of project studies, comparison especially, optimize parameters, make anchor fluke expanding-contracting action flexibility and reliability.This anchor is in pressure testing, fracturing process, squeeze into highly pressurised liquid, anchor fluke promotes the anchor fluke compression press spring under the high pressure effect, make anchor fluke and wiper block be pushed to casing wall, pawl tightly on internal surface of sleeve pipe, overcome the end thrust that in job execution, produces with this, play the fixedly effect of down-hole string position.The release rear compression spring restores, and anchor fluke is regained, and tubing string can trip out smoothly; Box is arranged and at body middle part car equidistant 3 row's anchor eyes are arranged at the top of cylinder body top connection car, every row has 3 anchor eyes, and anchor fluke, stage clip and " O " RunddichtringO are housed in each anchor eye.With body top connection and annular supporting positive cover with being threaded, again will long piece shape wiper block pack in the supporting positive cover, insert the platform exterior upper portion in the wiper block lower end and be provided with the slope, be provided with groove in the piece, cylindrical anchor fluke top is provided with the symmetric figure cat's paw, is provided with the circular groove of laying stage clip in the middle of the anchor fluke top, stage clip is placed in the circular groove of anchor fluke, " O " RunddichtringO is placed in the anchor fluke outside seal groove, car has pin thread in cylinder body lower contact bottom again.
The beneficial effects of the utility model are, this anchor is simple in structure, and the anchor fluke flexibility and reliability of stretching can repeatedly heavy use, and part exchanging is convenient.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model overall structure schematic diagram.
Among the figure 1, the body top connection, 2, supporting positive cover, 3, wiper block, 4, anchor fluke, 5, stage clip, 6, " O " RunddichtringO, 7, the written or printed documents lower contact.
The specific embodiment:
In Fig. 1, car has box on the top of cylinder body top connection 1, and equidistant 3 row's anchor eyes are arranged at the middle part of body car, every row has 3 anchor eyes, cylindrical anchor fluke 4 is housed in each anchor eye, and be provided with the cat's paw of symmetry on anchor fluke 4 tops, in the circular groove of the middle part of anchor fluke 4, be placed with columniform stage clip 5, again " O " RunddichtringO 6 is placed in the seal groove of anchor fluke 4 outsides, (be provided with groove in the piece with long piece shape wiper block 3 then, the lower end is provided with the insertion platform and is provided with the slope in the outside at an upper portion thereof), cover the back and insert in the supporting positive cover 2, body top connection 1 is threaded with supporting positive cover 2.Cylinder body lower contact 7 bottom cars have pin thread.When using this anchor, in pressure testing, fracturing process, squeeze into highly pressurised liquid, anchor fluke is at high pressure effect lower compression stage clip, and be pushed to casing wall, be clamped on the internal surface of sleeve pipe, overcome the end thrust that in job execution, produces with this, play the fixedly effect of down-hole string position.The release rear compression spring restores, and anchor fluke is regained, and tubing string can trip out smoothly.
Claims (1)
1, a kind of slim-hole safety anchor is characterized in that: the top car in cylinder body top connection (1) has box, and equidistant 3 row's anchor eyes are arranged at the middle part of body car, every row has 3 anchor eyes, cylindrical anchor fluke (4) is housed in each anchor eye, and be provided with the cat's paw of symmetric figure on anchor fluke (4) top, in the middle part circular groove of anchor fluke (4), be placed with columniform stage clip (5), again " O " RunddichtringO (6) is placed in the outside seal groove of anchor fluke (4), then with being provided with groove in the piece, the lower end be provided with insert platform at an upper portion thereof the outside long piece shape wiper block (3) that is provided with the slope cover in the back insertion supporting positive cover (2); Body top connection (1) is threaded with supporting positive cover (2); Cylinder body lower contact (7) bottom car has pin thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214346 CN2672278Y (en) | 2003-08-13 | 2003-08-13 | Safety anchoring device for small well hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03214346 CN2672278Y (en) | 2003-08-13 | 2003-08-13 | Safety anchoring device for small well hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672278Y true CN2672278Y (en) | 2005-01-19 |
Family
ID=34473046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03214346 Expired - Fee Related CN2672278Y (en) | 2003-08-13 | 2003-08-13 | Safety anchoring device for small well hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672278Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027189A (en) * | 2008-03-25 | 2011-04-20 | 贝克休斯公司 | Wellbore anchor and isolation system |
| CN102395753A (en) * | 2009-04-17 | 2012-03-28 | 贝克休斯公司 | Open hole frac system |
| CN103742090A (en) * | 2013-12-31 | 2014-04-23 | 大庆市福万通石油科技有限公司 | Large-drift-diameter hydraulic anchor |
-
2003
- 2003-08-13 CN CN 03214346 patent/CN2672278Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027189A (en) * | 2008-03-25 | 2011-04-20 | 贝克休斯公司 | Wellbore anchor and isolation system |
| CN103835673B (en) * | 2008-03-25 | 2017-04-12 | 贝克休斯公司 | Wellbore anchor and isolation system |
| CN102395753A (en) * | 2009-04-17 | 2012-03-28 | 贝克休斯公司 | Open hole frac system |
| CN102395753B (en) * | 2009-04-17 | 2014-11-26 | 贝克休斯公司 | Open hole frac system |
| CN103742090A (en) * | 2013-12-31 | 2014-04-23 | 大庆市福万通石油科技有限公司 | Large-drift-diameter hydraulic anchor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |