CN204960804U - Branch is hydraulic pressure whipstock of giving up for well - Google Patents
Branch is hydraulic pressure whipstock of giving up for well Download PDFInfo
- Publication number
- CN204960804U CN204960804U CN201520602723.9U CN201520602723U CN204960804U CN 204960804 U CN204960804 U CN 204960804U CN 201520602723 U CN201520602723 U CN 201520602723U CN 204960804 U CN204960804 U CN 204960804U
- Authority
- CN
- China
- Prior art keywords
- whipstock
- cambered surface
- piston
- top cover
- central tube
- 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 branch's well is windowed and is used the whipstock, in particular to branch is hydraulic pressure whipstock of giving up for well. The device's cambered surface whipstock suit is in the center tube outside, the preforming suit is on the center tube outer wall and through the locking piece locking, the piston suit is in the preforming outside and fixed through the shear pin, the piston blocks the locking piece, the piston outside forms sealedly through sealing washer I and cambered surface whipstock inner wall, it has the intercommunicating pore that is linked together with the piston up end to open on the center tube, it has the circulation hole to open on the cambered surface whipstock lower extreme lateral wall, threaded connection top cover seals through sealing washer II on the inner wall of cambered surface whipstock bottom, center tube and preforming bottom top are in the mounting groove of a cover, the top cover is sealed through sealing washer III and center tube, the design has the ball seat on the inner wall of top cover upper end. The utility model discloses a can give up smoothly safely, improve the success rate of giving up, the stable performance during use reduces the construction risk.
Description
Technical field:
The utility model relates to a kind of oil field branching well window-opening whipstock, particularly a kind of Multilateral Wells hydraulic releasing whipstock.
Background technology:
What existing branching well window-opening whipstock adopted is that machinery is given up, and namely forfeit to complete into pin by drilling tool compressive-shear and give up, although this machinery is given up, mode structure is simple, and principle is feasible.But there is the drawback of two aspects at the scene in work progress.On the one hand, whipstock tubing string is in lifting and going down process, if midway is hampered, tonnage is excessive, whipstock tubing string will be made automatically to give up, bring no small trouble to subsequent construction.In addition on the one hand, because in whipstock feeding bar external diameter and whipstock, interporal lacuna is too little, if it is unsmooth that drilling tool presses down the section cutting off pin, during trip-out, frictionally is easy to the whipstock tubing string having lost hand again to take out of, and site operation once repeatedly occurred this situation.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of Multilateral Wells hydraulic releasing whipstock, the arrangement achieves and can give up smoothly safely, improves success rate of giving up, stable performance during use, reduces construction risk.Overcome existing whipstock tubing string easily occur in lifting, going down process give up in advance and in trip-out process tubing string by the deficiency of problem of taking out of.
Technical solution adopted in the utility model is: a kind of Multilateral Wells hydraulic releasing whipstock, comprises top connection, central tube, cambered surface whipstock and ball, and top connection lower end connects central tube, cambered surface whipstock is sleeved on outside central tube, compressing tablet to be sleeved on central tube outer wall and to be locked by lock dog, piston bush to be contained in outside compressing tablet and to be fixed by shear pin, piston blocks lock dog, formed by sealing ring I and cambered surface whipstock inwall outside piston and seal, central tube has the intercommunicating pore be connected with piston upper surface, cambered surface whipstock lower end sidewall has circulation port, top cover that cambered surface whipstock bottom inwall is threaded also is sealed by sealing ring II, central tube and compressing tablet bottom withstand in the mounting groove of top cover, top cover is by sealing ring III and basepipe seal, top cover upper end inwall is designed with ball seat.
The beneficial effects of the utility model are: the utility model can be given up safely smoothly, improve success rate of giving up, stable performance during use, reduce construction risk.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of Multilateral Wells hydraulic releasing whipstock, comprises top connection 1, central tube 2, cambered surface whipstock 3 and ball 12, and top connection 1 lower end connects central tube 2, cambered surface whipstock 3 is sleeved on outside central tube 2, compressing tablet 8 to be sleeved on central tube 2 outer wall and to be locked by lock dog 6, piston 5 to be sleeved on outside compressing tablet 8 and to be fixed by shear pin 7, piston 5 blocks lock dog 6, formed by sealing ring I 4 and cambered surface whipstock 3 inwall outside piston 5 and seal, central tube 2 has the intercommunicating pore be connected with piston 5 upper surface, cambered surface whipstock 3 lower end sidewall has circulation port, top cover 10 that cambered surface whipstock 3 bottom inwall is threaded also is sealed by sealing ring II 9, central tube 2 and compressing tablet 8 bottom withstand in the mounting groove of top cover 10, top cover 10 is sealed by sealing ring III 11 and central tube 2, top cover 10 upper end inwall is designed with ball seat.
During construction, tubing string is after designated depth, and pitching 12 starts to build the pressure, and under pressure, piston 4 is cut off shear pin 7 and moved downward, until lock dog 6 exposes completely, and pressure release.Up and down tubing string after termination of pumping, confirms that whipstock tubing string is put aside completely.Then upper lifting pipe post, except top connection 1 and central tube 2 are gone out by band, all the other are all left to shaft bottom, and the whole process of giving up completes.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a Multilateral Wells hydraulic releasing whipstock, comprises top connection (1), central tube (2), cambered surface whipstock (3) and ball (12), and top connection (1) lower end connects central tube (2), it is characterized in that: cambered surface whipstock (3) is sleeved on central tube (2) outside, compressing tablet (8) is sleeved on central tube (2) outer wall also by lock dog (6) locking, piston (5) is sleeved on compressing tablet (8) outside and is fixed by shear pin (7), piston (5) blocks lock dog (6), piston (5) outside is formed by sealing ring I (4) and cambered surface whipstock (3) inwall and seals, central tube (2) has the intercommunicating pore be connected with piston (5) upper surface, cambered surface whipstock (3) lower end sidewall has circulation port, top cover (10) that cambered surface whipstock (3) bottom inwall is threaded also is sealed by sealing ring II (9), central tube (2) and compressing tablet (8) bottom withstand in the mounting groove of top cover (10), top cover (10) is sealed by sealing ring III (11) and central tube (2), top cover (10) upper end inwall is designed with ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602723.9U CN204960804U (en) | 2015-08-12 | 2015-08-12 | Branch is hydraulic pressure whipstock of giving up for well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602723.9U CN204960804U (en) | 2015-08-12 | 2015-08-12 | Branch is hydraulic pressure whipstock of giving up for well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204960804U true CN204960804U (en) | 2016-01-13 |
Family
ID=55055877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520602723.9U Expired - Fee Related CN204960804U (en) | 2015-08-12 | 2015-08-12 | Branch is hydraulic pressure whipstock of giving up for well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204960804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542421A (en) * | 2017-09-06 | 2018-01-05 | 中国石油集团长城钻探工程有限公司 | A kind of Hydraulic Anchorage whipstock of band circulation by-passing valve |
| CN108397137A (en) * | 2018-03-01 | 2018-08-14 | 中国海洋石油集团有限公司 | A kind of deflecting tool and its manufacturing method |
-
2015
- 2015-08-12 CN CN201520602723.9U patent/CN204960804U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542421A (en) * | 2017-09-06 | 2018-01-05 | 中国石油集团长城钻探工程有限公司 | A kind of Hydraulic Anchorage whipstock of band circulation by-passing valve |
| CN108397137A (en) * | 2018-03-01 | 2018-08-14 | 中国海洋石油集团有限公司 | A kind of deflecting tool and its manufacturing method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20170812 |