CN102704878B - Recovery whipstock - Google Patents
Recovery whipstock Download PDFInfo
- Publication number
- CN102704878B CN102704878B CN201210143718.7A CN201210143718A CN102704878B CN 102704878 B CN102704878 B CN 102704878B CN 201210143718 A CN201210143718 A CN 201210143718A CN 102704878 B CN102704878 B CN 102704878B
- Authority
- CN
- China
- Prior art keywords
- wedge
- mandrel
- pin
- whipstock
- pull rod
- 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.)
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Links
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- 238000010008 shearing Methods 0.000 claims abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 1
- 210000000664 rectum Anatomy 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- Earth Drilling (AREA)
- Actuator (AREA)
Abstract
A recovery whipstock. The recovery whipstock comprises an upper joint, the upper joint is connected with a pull rod, the bottom end of the pull rod is provided with a pull rod seat, the pull rod is connected with a wedge, a support ring is sleeved on the pull rod in the inclined plane of the wedge, the support ring is fixed with the inclined plane of the wedge through a pin, the bottom end of the wedge is connected with the pull rod seat through a fixed pin, the lower end of the wedge is connected with an upper body, the upper body is connected with a lower body through a shearing pin, the lower end of the lower body is connected with an outer barrel, two groups of through holes are circumferentially distributed on the outer barrel wall, tooth blocks are installed in the through holes and are connected with a piston in the outer barrel through shearing pins, a primer is arranged below the outer barrel and is connected with a joint of an inner cavity of the primer through the shearing pin, the lower end of the primer is connected with a ground anchor, a. The channel is directionally found by utilizing the whipstock, the repair rate of the small-drift-diameter fractured well is improved, and the integration of anchoring, directional whipstock, recovery and recycling is realized.
Description
Technical field
The invention belongs to a kind of instrument in the overhauling operation of oil field, particularly a kind of recovery type whipstock.Background technology
At present along with further developing in oil field, well cover damage situation is also all the more complicated, especially little latus rectum broken well, its lower fracture is often away from casing centerline, when looking for passage, the existing instrument probability entered outside pipe is far longer than the probability entered in pipe, causes little latus rectum broken well repair rate extremely low.
Summary of the invention
In order to solve Problems existing in background technology, the invention provides a kind of recovery type whipstock, detect that cover damages orientation by detection technique, utilize recovery type whipstock orientation to look for passage, improve little latus rectum broken well repair rate, grappling, directional inclination, recovery, recycling integration can be realized.
Technical scheme of the present invention is: this this recovery type whipstock comprises top connection, top connection is connected with pull bar, pull bar bottom is provided with draw-bar seat, pull bar outer wall cover has wedge, drag link sleeve in the inclined-plane of wedge has support ring, support ring is fixed by the inclined-plane of pin and wedge, wedge bottom is fixed together by steady pin and draw-bar seat, wedge lower end is connected with body, upper body is connected with lower body by shear pin, lower body lower end is connected with urceolus, outer tube wall is circumferentially gone up distribution two groups of through holes, in through hole, block teeth are installed, block teeth are connected with the piston in urceolus by shearing nail, introduction is provided with below urceolus, introduction is connected with the joint of its inner chamber by cutting off, introduction lower end is connected with earth anchor, mandrel is provided with below draw-bar seat, mandrel upper end is connected with mandrel ring washer, mandrel lower end outer wall is connected with joint by thread form tooth, mandrel lower end inner wall is connected with plug, be connected with piston in the middle part of mandrel.
The present invention has following beneficial effect: this instrument is compared with whipstock in the past and in use had the following advantages: 1) directional inclination, and implementation tool orientation looks for passage; 2) there is self-lock ability, cannot loosen after grappling; 3) special female coupling tap is coordinated to salvage upper end wedge, recyclable recycling; 4) propose shearing on and trip out whipstock, convenient and swift.The advantage of this instrument obtains sufficient checking in applying at the scene, achieves good result of use.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present invention.
1-cushion rubber in figure; 2-top connection; 3-support ring; 4-ring washer; 5-pull bar; 6-wedge; 7-draw-bar seat; 8-cushion rubber; 9-steady pin; 10-mandrel ring washer; The upper body of 11-; 12-alignment pin; Body under 13-; 14-shear pin; 15-cushion rubber; 16-cushion rubber; 17-cushion rubber; 18-piston; 19-block teeth; 20-urceolus; 21-cushion rubber; 22-shears nail; 23-steel ball; 24-plug; 25-cuts off; 26-introduction; 27-mandrel; 28-earth anchor; 29-joint.
detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, this recovery type whipstock comprises top connection 2, top connection 2 has been threaded pull bar 5, contact surface between top connection 2 and pull bar 5 is provided with cushion rubber 1, pull bar 5 bottom left-hand thread is connected with draw-bar seat 7, pull bar 5 outer wall cover has wedge 6, pull bar 5 cover in the inclined-plane of wedge 6 has support ring 3, support ring 3 is fixed by the inclined-plane of pin and wedge 6, wedge 6 bottom is fixed together by steady pin 9 and draw-bar seat 7, the front end of draw-bar seat 7 is stuck in the shoulder of wedge 6, wedge 6 lower end has been threaded upper body 11, cushion rubber 8 is provided with between contact surface between wedge 6 and upper body 11, upper body 11 is connected with lower body 13 by shear pin 14, lower body 13 lower end has been threaded urceolus 20, urceolus 20 is divided into two parts, centre is connected by joint, contact surface between lower body 13 and urceolus 20 be provided with cushion rubber 15, on urceolus 20 wall circumferentially on be uniformly distributed two groups of through holes, two groups of through holes lay respectively at the both sides of joint, block teeth 19 are installed in through hole, block teeth 19 are fixedly connected with the piston 18 in urceolus 20 by shearing nail 22, piston 18 is wedge shape, piston 18 matches with the contact surface shape of block teeth 19, cushion rubber 17 is provided with between the contact surface of urceolus 20 and piston 18, introduction 26 is provided with below urceolus 20, introduction 26 is connected with the joint 29 of its inner chamber by cutting off 25, introduction 26 lower end has been threaded earth anchor 28, mandrel 27 is provided with below draw-bar seat 7, mandrel 27 upper end is fixedly connected with mandrel ring washer 10, mandrel 27 lower end outer wall is connected with joint 29 by thread form tooth, mandrel 27 can only move along joint 29 unit, grappling realizes self-locking, mandrel 27 lower end inner wall has been threaded plug 24, be connected with piston 18 in the middle part of mandrel 27, the plunger shaft of piston 18 and the inner chamber of mandrel 27 are come round.Between mandrel 27 and piston 18, contact surface is provided with cushion rubber 21, is provided with cushion rubber 16 between the contact surface between mandrel 27 and lower body 13.
On pull bar 5 below support ring 3, cover has ring washer 4, and ring washer 4 is in order to stable inclined-plane.
Lower body 13 is provided with alignment pin 12, and the lower end of alignment pin 12 is positioned at the bar-shaped trough of body 11, and alignment pin 12 and inclined-plane angle 180 degree, in order to determine the orientation on inclined-plane.
Under whipstock behind precalculated position, earth anchor 28 first grappling, throws steel ball 23 and builds the pressure, be with moving mandrel 27 to move down gradually at hydraulic action lower piston 18, utilize piston 18 slope to promote block teeth 19 and expand, shear nail and cut off, block teeth 19 are adjacent to subsides internal surface of sleeve pipe, and pump pressure sharply rises and illustrates that grappling completes.Because mandrel 27 end zigzag has self-lock ability, cannot loosen after grappling.Oppositely forward top connection 2 to, pull bar 5 is separated with draw-bar seat 7, deflecting is started after extracting top connection 2 and pull bar 5 out, complete after deflecting windows, utilize special female coupling tap directly to salvage top wedge 6, when pulling force is more than 5t, shear pin 12 and shear pin 14 cut off, body 11 and lower body 13 are elongated and are with moving mandrel 27 and piston 18 to be pulled upwardly releasing grappling by mandrel back-up ring 10 can pull out instrument, the recycling of implementation tool.
Claims (3)
1. a recovery type whipstock, comprise top connection (2), it is characterized in that: described top connection (2) is connected with pull bar (5), pull bar (5) bottom is connected with draw-bar seat (7), pull bar (5) outer wall cover has wedge (6), pull bar (5) cover in the inclined-plane of wedge (6) has support ring (3), support ring (3) is fixed by the inclined-plane of pin and wedge (6), wedge (6) bottom is fixed together by steady pin (9) and draw-bar seat (7), wedge (6) lower end is connected with body (11), upper body (11) is connected with lower body (13) by shear pin (14), lower body (13) lower end is connected with urceolus (20), urceolus (20) wall is circumferentially gone up distribution two groups of through holes, block teeth (19) are installed in through hole, block teeth (19) are connected with the piston (18) in urceolus (20) by shearing nail (22), urceolus (20) below is provided with introduction (26), introduction (26) is connected with the joint (29) of its inner chamber by cutting off (25), introduction (26) lower end is connected with earth anchor (28), draw-bar seat (7) below is provided with mandrel (27), mandrel (27) upper end is connected with mandrel ring washer (10), mandrel (27) lower end outer wall is connected with joint (29) by thread form tooth, mandrel (27) lower end inner wall is connected with plug (24), mandrel (27) middle part is connected with piston (18).
2. recovery type whipstock according to claim 1, is characterized in that: the upper cover of pull bar (5) of support ring (3) below has ring washer (4).
3. recovery type whipstock according to claim 1, is characterized in that: lower body (13) is provided with alignment pin (12), and the lower end of alignment pin (12) is positioned at the bar-shaped trough of body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143718.7A CN102704878B (en) | 2012-05-09 | 2012-05-09 | Recovery whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143718.7A CN102704878B (en) | 2012-05-09 | 2012-05-09 | Recovery whipstock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704878A CN102704878A (en) | 2012-10-03 |
| CN102704878B true CN102704878B (en) | 2016-03-23 |
Family
ID=46897905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210143718.7A Active CN102704878B (en) | 2012-05-09 | 2012-05-09 | Recovery whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102704878B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277050B (en) * | 2013-06-05 | 2015-07-08 | 中国石油集团川庆钻探工程有限公司 | Recoverable whipstock and combined fishing tool thereof |
| 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 |
| CN108735314B (en) * | 2018-05-31 | 2024-08-09 | 江苏核电有限公司 | Special tool for adjusting and centering heat shield of reactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425417A (en) * | 1993-09-10 | 1995-06-20 | Weatherford U.S., Inc. | Wellbore tool setting system |
| CN2665340Y (en) * | 2003-06-14 | 2004-12-22 | 程显强 | A toeing device |
| CN2763468Y (en) * | 2004-12-29 | 2006-03-08 | 大港油田集团有限责任公司 | Directional sub for side drilling in casing opening |
| CN201354613Y (en) * | 2009-02-20 | 2009-12-02 | 张召泉 | Self-locking type screw pump oil tube anchoring device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731064Y (en) * | 2004-06-25 | 2005-10-05 | 王锡敏 | Deflection guider capable of being taking out |
| CN201045281Y (en) * | 2006-12-30 | 2008-04-09 | 阜宁县宏达石化机械有限公司 | Well bore guiders |
-
2012
- 2012-05-09 CN CN201210143718.7A patent/CN102704878B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425417A (en) * | 1993-09-10 | 1995-06-20 | Weatherford U.S., Inc. | Wellbore tool setting system |
| CN2665340Y (en) * | 2003-06-14 | 2004-12-22 | 程显强 | A toeing device |
| CN2763468Y (en) * | 2004-12-29 | 2006-03-08 | 大港油田集团有限责任公司 | Directional sub for side drilling in casing opening |
| CN201354613Y (en) * | 2009-02-20 | 2009-12-02 | 张召泉 | Self-locking type screw pump oil tube anchoring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704878A (en) | 2012-10-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |