CN2703115Y - Suspension positioning recoverable whipstocks - Google Patents
Suspension positioning recoverable whipstocks Download PDFInfo
- Publication number
- CN2703115Y CN2703115Y CN 200420001966 CN200420001966U CN2703115Y CN 2703115 Y CN2703115 Y CN 2703115Y CN 200420001966 CN200420001966 CN 200420001966 CN 200420001966 U CN200420001966 U CN 200420001966U CN 2703115 Y CN2703115 Y CN 2703115Y
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- CN
- China
- Prior art keywords
- whipstock
- suspension
- positioning sleeve
- joint
- assembly
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- 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 - Lifetime
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Abstract
The utility model relates to a suspension positioning recoverable whipstock used for the drilling operation of the branch well, comprising a suspension positioning assembly and a recoverable whipstock assembly. The suspension positioning assembly comprises a guiding head, a sleeve pipe joint loop, a switching joint, a sleeve pipe short node and an orienting and positioning sleeve connected on the utmost upper ends of the suspension device, the reverse buckling joint and the connecting short joint. The inner ring of the orienting and positioning sleeve, as an evenly distributed concave tooth type key groove, forms an interstice fit with a key strip on the main body of the whipstock. The suspension device for supporting the orienting and positioning sleeve is provided with a fixed mechanism for preventing rotation, and a suspension slip is designed in a concave type slope. The recoverable whipstock assembly is composed of a guiding head, four evenly distributed key bars on the main body, a double-female joint, a whipstock upper body and a slope. The whipstock upper body and the upper end of the slope are provided with recoverable salvaging holes. The external diameter of the lower end of the double-female short node is designed as larger than the external diameter of the orienting and position sleeve, and the lower end of the double-female short node is designed with an oblique angle, so as to form a base placing shoulder. The utility model has the advantages of reliable structure, convenient operation and easy construction.
Description
Technical field
The utility model relates to and is used for the whipstock that the branch well drilling well operations is used in the petroleum industry, the recyclable whipstock of particularly a kind of suspension locate mode.
Background technology
The setting of the recyclable whipstock that is adopted in the branch well drilling well operations is most at present is presetting system, orientation spool of the position serial connection of promptly windowing in advance in main hole sleeve pipe bottom in advance.This mode makes the position of windowing comparatively fixing, and the down-hole situation is complicated and changeable, and the position of windowing changes with hole condition is different probably.Sometimes need the position of windowing made progress or adjust downwards, run into the recyclable whipstock of Multilateral Wells that this situation just must use can be adjusted the position of windowing arbitrarily.The presetting system orientation spool generally adopts dual mode in addition, female or male forms little step, recessed step since when creeping into depositing of drilling cuttings mud cake lost efficacy in the concave station rank, and the shoulder that protrudes must make the main borehole casing size dwindle, and influence drill bit and goes into the selection of well tool size.
Summary of the invention
The purpose of this utility model is to provide a kind of suspension locate mode recyclable whipstock, is implemented in the optional position that needs and carries out the casing window sidetracking branch well hole.
The utility model mainly is made up of suspension locating assembly, recyclable whipstock assembly two parts, hanging locating assembly comprises target seeker 1, casing coupling 2, crossover sub 3, casing nipple 5 and is connected hanger 4 and back-off joint 6, is connected the directed positioning sleeve 8 of pipe nipple 7 the tops, directed positioning sleeve 8 inner rings are uniform concave dentate shape keyway, key bar 10 on it and the whipstock body 11 forms matched in clearance, the hanger 4 that supports directed positioning sleeve 8 has and prevents the fixed mechanism that rotates, and design has the suspension slips in the spill slope; Recyclable whipstock assembly is made up of target seeker 9, four the key bar 10, two female joint 12, whipstock upper body 13, the inclined-planes 14 that are distributed on the body 11, whipstock upper body 13 has to reclaim with 11 upper ends, inclined-plane salvages the hole, two female pipe nipple 12 lower end external diameter designs are greater than directed positioning sleeve 8 external diameters, and the lower end design has the oblique angle, forms a seat and puts shoulder.
Adopt the utility model to carry out the branch well hole operation, need not to connect the whipstock seat in advance on the main hole casing string and put device, the position of windowing can change arbitrarily with the down-hole situation to be adjusted.By adopting mature technology-hanger to settle the directed positioning sleeve of whipstock, whipstock lay reliable in structure.Adopt the directed location of concave dentate shape to cooperate directed detent mechanism, easy and simple to handlely be easy to construction with protruding key bar, only need be when being lowered to the whipstock assembly disposable use measuring apparatus just can realize the orientation of whipstock need not repeatedly to rent measuring apparatus.Reserve pawl and two kinds of recovering mechanisms of recovery holes owing to adopt, can adopt hook fisher or slips to salvage, increased the fishing success rate.
Description of drawings
Fig. 1-a is for hanging the locating assembly structural representation
Fig. 1-b is recyclable whipstock assembly structure schematic diagram
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, the utility model mainly is made up of suspension locating assembly, recyclable whipstock assembly two parts, hanging locating assembly comprises target seeker 1, casing coupling 2, crossover sub 3, casing nipple 5 and is connected hanger 4 and back-off joint 6, is connected the directed positioning sleeve 8 of pipe nipple 7 the tops, directed positioning sleeve 8 inner rings are uniform concave dentate shape keyway, key bar 10 on it and the whipstock body 11 forms matched in clearance, the hanger 4 that supports directed positioning sleeve 8 has and prevents the fixed mechanism that rotates, and design has the suspension slips in the spill slope; Recyclable whipstock assembly is made up of target seeker 9, four the key bar 10, two female joint 12, whipstock upper body 13, the inclined-planes 14 that are distributed on the body 11, whipstock upper body 13 has to reclaim with 11 upper ends, inclined-plane salvages the hole, two female pipe nipple 12 lower end external diameter designs are greater than directed positioning sleeve 8 external diameters, and the lower end design has the oblique angle, forms one and puts shoulder.
For reducing the risk of salvaging failure, whipstock upper body 13 complete column parts are processed with pawl.
After salvaging failure, for realizing and being communicated with of bottom pit shaft that target seeker 1,9 is made by easy brill material, so just can fall target seeker by brill, and make the upper and lower pit shaft connection of whipstock.
Shear pin 15 will be windowed and be milled awl and 16 be connected on the recyclable whipstock assembly.
The utility model operating principle is as follows: directed positioning sleeve 8 is connected on hanger 4 and the back-off joint 6, and it forms the directed locating assembly of suspension with hanger and other parts.Directed positioning sleeve 8 inner rings design has the concave dentate shape keyway.There is the perforate oblique cone target seeker 1 inside, is used for pitching and builds the pressure.The design of hanger slips place has the anti-rotation groove.Be lowered to the instrument position of windowing in advance in the well by special use, the pitching hanger fluid cylinder that builds the pressure is up, and slip spider is hung, and presses down back-off and is lowered to instrument and opens the back of giving up from the left-hand thread place of back-off joint 6 and propose well.Be lowered to recyclable whipstock assembly, the design of whipstock bottom has key bar 10, body 11, target seeker 9.Four positive ladder type key bars are distributed on the body 11.Be slidingly matched with directed positioning sleeve 8 formation.When whipstock assembly during, carry out whipstock inclined-plane 14 orientation adjustment earlier down to directed positioning sleeve.Gyrolevel is down to being connected the compound orientation of measuring whipstock in the orientation joint of boring 6 tops of milling.Rotate running string, adjust to the design orientation.Transfer whipstock, four protruding keys of whipstock bottom insert in the interior recessed teeth groove of directed positioning sleeve.Continue to transfer place, big footpath, two female pipe nipple 12 lower ends seat on the upper surface of directed positioning sleeve 8.This moment, whipstock promptly can not rotate, again can not be descending.Continue to press down being lowered to the pipe string, will cut off the connection shear pin 15 on whipstock top.Thereby realize windowing mill awl 16 with finish whipstock separating of whipstock be lowered to the arrangement operation.When needs reclaim whipstock, can reserve mechanism by this instrument, the pawl groove that utilizes special-purpose fishing tool to salvage the hole or utilize slip socket to pass through 13 full circle post positions, whipstock upper body by 14 tops, inclined-plane is salvaged and is reclaimed whipstock.
Claims (2)
1, the recyclable whipstock of a kind of suspension locate mode, mainly by hanging locating assembly, recyclable whipstock assembly two parts are formed, it is characterized in that: hang locating assembly and comprise target seeker (1), casing coupling (2), crossover sub (3), casing nipple (5) and be connected hanger (4) and back-off joint (6), connect pipe nipple (7) directed positioning sleeve (8) topmost, directed positioning sleeve (8) inner ring is uniform concave dentate shape keyway, key bar (10) on it and the whipstock body (11) forms matched in clearance, the hanger (4) that supports directed positioning sleeve (8) has and prevents the fixed mechanism that rotates, and design has the suspension slips in the spill slope; Recyclable whipstock assembly is distributed on the key bar (10) on the body (11), two female joint (12), whipstock upper body (13), inclined-plane (14) by target seeker (9), four and forms, whipstock upper body (13) has to reclaim with upper end, inclined-plane (11) salvages the hole, the external diameter design of two female pipe nipples (12) lower end is greater than directed positioning sleeve (8) external diameter, and the lower end design has the oblique angle, forms a seat and puts shoulder.
2, the recyclable whipstock of suspension locate mode according to claim 1 is characterized in that: the complete column part in whipstock upper body (13) is processed with pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001966 CN2703115Y (en) | 2004-01-08 | 2004-01-08 | Suspension positioning recoverable whipstocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001966 CN2703115Y (en) | 2004-01-08 | 2004-01-08 | Suspension positioning recoverable whipstocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703115Y true CN2703115Y (en) | 2005-06-01 |
Family
ID=34767132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420001966 Expired - Lifetime CN2703115Y (en) | 2004-01-08 | 2004-01-08 | Suspension positioning recoverable whipstocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703115Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441829C (en) * | 2005-12-29 | 2008-12-10 | 中国海洋石油总公司 | Slant device capable of recovering and fishing tool thereof |
| CN102041967A (en) * | 2010-11-30 | 2011-05-04 | 锦州清华机械有限公司 | Recoverable track type deflection guider |
| CN107575179A (en) * | 2017-10-19 | 2018-01-12 | 中国海洋石油总公司 | More inclined-plane window sidetracking whipstock assemblies |
-
2004
- 2004-01-08 CN CN 200420001966 patent/CN2703115Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441829C (en) * | 2005-12-29 | 2008-12-10 | 中国海洋石油总公司 | Slant device capable of recovering and fishing tool thereof |
| CN102041967A (en) * | 2010-11-30 | 2011-05-04 | 锦州清华机械有限公司 | Recoverable track type deflection guider |
| CN102041967B (en) * | 2010-11-30 | 2012-08-15 | 锦州清华机械有限公司 | Recoverable track type deflection guider |
| CN107575179A (en) * | 2017-10-19 | 2018-01-12 | 中国海洋石油总公司 | More inclined-plane window sidetracking whipstock assemblies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140108 Granted publication date: 20050601 |