CN201090157Y - Callback type deflector anchorage tool for branching well - Google Patents
Callback type deflector anchorage tool for branching well Download PDFInfo
- Publication number
- CN201090157Y CN201090157Y CNU2007201171972U CN200720117197U CN201090157Y CN 201090157 Y CN201090157 Y CN 201090157Y CN U2007201171972 U CNU2007201171972 U CN U2007201171972U CN 200720117197 U CN200720117197 U CN 200720117197U CN 201090157 Y CN201090157 Y CN 201090157Y
- Authority
- CN
- China
- Prior art keywords
- main body
- slips
- short circuit
- tool
- whipstock
- 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
Disclosed is a retractable whipstock anchoring tool for a multilateral well. The retractable whipstock anchoring tool of the multilateral well comprises a main body (1), the external surface at the lower part of the main body (1) is a conical surface, the main body (1) is fixed with a short circuit (5) by a shear pin (2), a lower joint (4) is threaded-connected under the short circuit (5), slips (3) are inserted into the lower joint (4) corresponding to the lower end of the main body (1), and the bottom faces of the slips (3) are matched with the conical surface of the main body (1). The tool has advantages of simple structural principle, high success ratio, greatly simplified well drilling and completion technique process of the multilateral well, and reduced well drilling and completion risks.
Description
Technical field:
The utility model relates to a kind of instrument in the oil drilling field.Particularly a kind of Multilateral Wells recovery type whipstock anchor tool.
Background technology:
Along with the high speed development of drilling technology, the branch hole drilling completion technique is a new drilling completion technology that can reduce oil and gas development cost, the raising rate of oil and gas recovery of rising.Because the complexity of Multilateral Wells itself, the low development that has limited the Multilateral Wells technology of success rate.When the main borehole casing side tracking was windowed construction, the firm, stable of whipstock was the essential condition that guarantees that institute's windowing rule, assurance construction are carried out smoothly.After construction finished owing to window, whipstock must reclaim, and this just requires anchor tool to want and can reclaim.In the domestic Multilateral Wells technology, anchor tool is not used in the whipstock lower end, and is just spacing by the inclined-plane of lower end.This makes the freedom of movement of whipstock very big, is difficult for guaranteeing the rule of window, and construction accident rate height.
The utility model content:
In order to solve the problem in the background technology, the utility model provides a kind of safe and reliable, callable whipstock anchor tool, and this tool construction principle is simple, the success rate height, simplify branch hole drilling, well-completing process step greatly, reduced drilling well, completion risk.
The technical solution of the utility model is: this Multilateral Wells recovery type whipstock anchor tool, comprise main body, the lower body part external surface is the conical surface, main body is fixed with short circuit by cutting off, lower contact has been threaded below the short circuit, embedding in the lower contact of main body lower end correspondence has slips, matches with the conical surface of main body in the bottom surface of slips.
Be covered with spacing lock dog on the main body of above-mentioned short circuit lower surface correspondence.
The utlity model has following beneficial effect: this instrument with whipstock firmly, stably fixing, carry out rule with window smoothly with the construction that guarantees to window.Simultaneously, after construction finishes, whipstock and anchor tool can be reclaimed by certain way.
Description of drawings:
Accompanying drawing 1 is a sectional view of the present utility model.
1-main body among the figure, 2-cuts off, 3-slips, 4-lower contact, 5-short circuit, the spacing lock dog of 6-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in figure, this Multilateral Wells comprises main body 1 with recovery type whipstock anchor tool, main body 1 lower external face is the conical surface, main body 1 is fixed with short circuit 5 by cutting off 2, cutting off 2 hangs and positioning action, lower contact 4 has been threaded below the short circuit 5, embed in the lower contact 4 of main body 1 lower end correspondence slips 3 is arranged, match with the conical surface of main body 1 in the bottom surface of slips 3, internal grappling slips 3, its outside dimension is less than the tool body external diameter, and the situation of slips sheet does not guarantee the spacing reliability of slips so wearing and tearing can not appear in being lowered to process in instrument; Be covered with spacing lock dog 6 on the main body 1 of short circuit 5 lower surface correspondences, in the lump slips proposed when guaranteeing deblocking.
This instrument is connected to the whipstock lower end during use, down behind the precalculated position, after ajusting the whipstock incline position, press down drilling tool, cut off connection by mechanical pressure and cut off 2, the descending promotion slips 3 in inclined-plane of main body 1 is expanded outwardly, be clamped on the inwall of main hole sleeve pipe, and the wedging inwall realize to hang, and prevents that upper tool from rotating in a circumferential direction and move radially, and realizes the spacing function of grappling.The design of self-locking angle of friction makes not deblocking automatically of instrument.When reclaiming,, promote slips 3 withdrawals when proposing in the drive lower contact 4 and just can realize reclaiming by putting forward main body 1 on certain upper lifting force.
This instrument adopts the wedge type force-increasing mechanism, uses less pressure, just can produce bigger anchorage force.Anchor mechanism adopts self-lock mechanism simultaneously, and the wedging of main body 1 can not be withdrawed from automatically, helps grappling.
Claims (2)
1. a Multilateral Wells is with recovery type whipstock anchor tool, comprise main body (1), it is characterized in that: main body (1) lower external face is the conical surface, main body (1) is fixed with short circuit (5) by cutting off (2), lower contact (4) has been threaded below the short circuit (5), the lower contact (4) of main body (1) lower end correspondence goes up to embed slips (3), matches with the conical surface of main body (1) in the bottom surface of slips (3).
2. Multilateral Wells according to claim 1 is characterized in that: be covered with spacing lock dog (6) on the main body (1) of short circuit (5) lower surface correspondence with recovery type whipstock anchor tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201171972U CN201090157Y (en) | 2007-10-17 | 2007-10-17 | Callback type deflector anchorage tool for branching well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201171972U CN201090157Y (en) | 2007-10-17 | 2007-10-17 | Callback type deflector anchorage tool for branching well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090157Y true CN201090157Y (en) | 2008-07-23 |
Family
ID=39861917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201171972U Expired - Fee Related CN201090157Y (en) | 2007-10-17 | 2007-10-17 | Callback type deflector anchorage tool for branching well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090157Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358566A (en) * | 2014-11-26 | 2015-02-18 | 中国石油集团西部钻探工程有限公司 | Drilling coring device of any well section |
-
2007
- 2007-10-17 CN CNU2007201171972U patent/CN201090157Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358566A (en) * | 2014-11-26 | 2015-02-18 | 中国石油集团西部钻探工程有限公司 | Drilling coring device of any well section |
| CN104358566B (en) * | 2014-11-26 | 2017-02-22 | 中国石油集团西部钻探工程有限公司 | Drilling coring device of any well section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20161017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |