CN2916093Y - Detachable casing sidetracking guide device - Google Patents
Detachable casing sidetracking guide device Download PDFInfo
- Publication number
- CN2916093Y CN2916093Y CN 200620091024 CN200620091024U CN2916093Y CN 2916093 Y CN2916093 Y CN 2916093Y CN 200620091024 CN200620091024 CN 200620091024 CN 200620091024 U CN200620091024 U CN 200620091024U CN 2916093 Y CN2916093 Y CN 2916093Y
- Authority
- CN
- China
- Prior art keywords
- whipstock
- sidetracking
- guider
- casing sidetracking
- casing
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a detachable device, which pertains to a casing sidetracking guide equipment used for branches of sidetracking horizontal wells. In existing technology, casing sidetracking guide equipment used in oil fields is irretrievable, thus the sidetracking whipstock needs to be taken out of the well for casing sidetracking of the second branch, and for this reason, the drill has to be taken out and put down twice, which is not cost-effective. To tackle the problem, the utility model adopts a double-layer detachable structure which comprises a guider and a whipstock, wherein between the guider and the whipstock are provided a fixture block, a supporting spring, a lower righting ring and nuts. After sidetracking, the used whipstock can be taken out while the guider can be left in the well as the completion well string guider. The device can be used as the whipstock for casing sidetracking and the completion well string guider after the casing sidetracking is completed. In field construction, with the device, the drill only needs to be put down once, thus the cost is reduced. Because of the simple structure and convenient usage, the device can be widely used for casing sidetracking guide equipment used for branches of sidetracking horizontal wells.
Description
Technical field:
The utility model relates to a kind of removable casing sidetracking guiding device, belongs to the casing sidetracking guiding device class that sidetrack horizontal well is used for Multilateral Wells.
Background technology:
The utilization rate of oil wells in order to enlarge oil well oil-producing formation area, is effectively improved in the oil field in recovery process, common sidetracking horizontal drilling, the Multilateral Wells promoted.Because horizontal well will be to the oil well inner sleeve guiding of windowing in drilling process, could realize branch hole drilling, and the casing sidetracking steering tool of oil field use at present mostly is the formula of can not dragging for, for the well more than Multilateral Wells second Multilateral Wells, owing to will keep the main borehole latus rectum enough big, often need the guider instrument of windowing is taken out in well, and then be lowered to the completion guider, and so just need remove twice brill, see it obviously is uneconomic from economic angle, in addition, owing to not only waste time and energy making a trip, also cause down-hole accident easily, for this reason, the popularization of this method is restricted, among a kind of removable casing sidetracking guiding device is being studied at present.
The utility model content:
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of removable casing sidetracking guiding device that provides, after being used for casing sidetracking, whipstock can be pulled out in well, and guider can be stayed the usefulness of proceeding the casing sidetracking guiding in the well as completion tubular column.
The utility model implementation is such.
For the utility model that achieves the above object has adopted the structure of being made up of guider, whipstock, fixture block, support spring, last centering ring, following centering ring and nut are housed between described guider and the whipstock.
Described fixture block shape is coniform, is a plane at circular cone small end place, and fixture block is by last wiper block, support spring, wiper block and nut are fixed in the narrow groove above the whipstock down.Between guider and whipstock, rubber seal is housed.
The utility model working method is:
When carrying out the casing sidetracking operation, at first this device is connected main borehole positioning and directing anti-rotation device upper end, by sending into tubing string this device is lowered into the precalculated position, down-hole at well head, press down the drilling well tubing string then, the pin of sending between tubing string and this device is cut off, at this moment, the hypotenuse position of guider and whipstock faces the sleeve pipe position that need window, at this moment, the awl instrument that mills in the well is by guider and whipstock effect, forces to mill awl generation lateral force and mill and wear pipe and window, after finishing casing sidetracking and well and creeping into, be lowered to whipstock again and drag for thatch, salvage whipstock,, support spring is retracted in the narrow groove of whipstock pulled out ground smoothly because fixture block is subjected to the external force effect, and the guider of staying in the well still can play guide effect in well, so that be lowered to Multilateral Wells completion tubular column operation.
The utility model compared with prior art has distinguishing feature:
Owing between guider in this device and the whipstock fixture block support spring is housed, the double-deck removable structure of upper and lower centralizer, therefore after the well inner sleeve is windowed, by lifting tubing string, just whipstock can be taken out in well, stay the guider of down-hole and still can the Multilateral Wells sleeve pipe be windowed, can save one trip tool operation for the well more than Multilateral Wells second Multilateral Wells like this as the completion guider.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Among the figure by guider 1,, 2, whipstock, 3, sealing ring, 4, go up centering ring, 5, fixture block, 6, support spring, 7, centering ring down, 8, nut forms.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
Among the figure, guider 1 is a pipe shape, outer wall is a clinohedral, in guider 1 pipe shape upper end, the section diameter section is arranged less than big section diameter, on segment diameter and big section diameter segment interface position tube wall, a groove is arranged, after whipstock 2 penetrates guider 1 endoporus, the dead slot that is arranged on guider 1 top is corresponding mutually with the narrow groove of whipstock 2 tops, fixture block 5 is by last centering ring 4, following centering ring 7 is fixed in the groove of guider 1 and whipstock 2, fixture block 5 is shaped as coniform, and circular cone small end place is a plane, and fixture block is in the narrow groove of guider 1 and whipstock 2, a compression spring 6 is equipped with in fixture block 5 tops, this compression spring can retract to after being compressed in the narrow groove of whipstock 2, can make whipstock can be tripped out the ground well head smoothly like this after finishing casing sidetracking, and nut 8 is located at whipstock 2 end diameter positions, be fixed on the top by screw thread, can play fixedly fixture block effect.
Sealing ring 3 is housed between guider and whipstock, seals, can guarantee the unlikely reduction of tubing string internal pressure when casing sidetracking, and influence casing sidetracking, the sealing circle is made for the rubber material.
Claims (3)
1, a kind of removable casing sidetracking guiding device, comprise by guider (1), whipstock (2) and forming, it is characterized in that: fixture block (5), support spring (6), last centering ring (4), following centering ring (7) and nut (8) are housed between described guider (1) and the whipstock (2).
2, described a kind of removable casing sidetracking guiding device according to claim 1, it is characterized in that: described fixture block (5) shape is coniform, at circular cone small end place is a plane, and fixture block is fixed in the top narrow groove of whipstock (2) by last wiper block (4), support spring (6), following wiper block (7) and nut (8).
3, described a kind of removable casing sidetracking guiding device according to claim 1 is characterized in that: between described guider (1) and the whipstock (2) rubber seal (3) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091024 CN2916093Y (en) | 2006-05-23 | 2006-05-23 | Detachable casing sidetracking guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091024 CN2916093Y (en) | 2006-05-23 | 2006-05-23 | Detachable casing sidetracking guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2916093Y true CN2916093Y (en) | 2007-06-27 |
Family
ID=38187001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620091024 Expired - Fee Related CN2916093Y (en) | 2006-05-23 | 2006-05-23 | Detachable casing sidetracking guide device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2916093Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109113623A (en) * | 2018-10-25 | 2019-01-01 | 中石化石油工程技术服务有限公司 | A kind of synchronous righting packaged milling tool of casing damaged well and its construction method |
-
2006
- 2006-05-23 CN CN 200620091024 patent/CN2916093Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109113623A (en) * | 2018-10-25 | 2019-01-01 | 中石化石油工程技术服务有限公司 | A kind of synchronous righting packaged milling tool of casing damaged well and its construction method |
| CN109113623B (en) * | 2018-10-25 | 2023-06-02 | 中石化石油工程技术服务有限公司 | Casing damage well synchronous centralizing casing milling tool and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20110523 |