CN2835521Y - Whipstock for casing sidetracking - Google Patents
Whipstock for casing sidetracking Download PDFInfo
- Publication number
- CN2835521Y CN2835521Y CN 200520133878 CN200520133878U CN2835521Y CN 2835521 Y CN2835521 Y CN 2835521Y CN 200520133878 CN200520133878 CN 200520133878 CN 200520133878 U CN200520133878 U CN 200520133878U CN 2835521 Y CN2835521 Y CN 2835521Y
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- Prior art keywords
- whipstock
- plane
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Abstract
The utility model relates to a well drilling work tool for oil-gas fields, particularly a whipstock for sleeve windowing, which belongs to the class of downhole tools and is characterized in that the whipstock is composed of two curved faces, a starting large angle curved face and a windowing minor angle curved face, and thus, a large angle slope face and a minor angle slope face are all provided with V-shaped grooves. The utility model has the advantages that slant faces of the utility model adopt V-shaped groove project organization, the processing technology is simple, the processing cost is low and the shape and the orientation of windows can be ensured after the operation of the sleeve windowing.
Description
Technical field
The utility model relates to the oilfield drilling power tool, and particularly a kind of oblique device for casing tube window opening belongs to the downhole tool class.
Background technology
When adopting traditional plane whipstock to window, mill awl and at first contact the whipstock surface, contact sleeve inside pipe wall under the guiding on inclined-plane then, along with milling the descending of awl, final worn out sleeve pipe is finished and is windowed afterwards.Owing to mill awl in milling sleeve pipe process, mill awl and be in rotation status, therefore be easy to cause the drift of window.And owing to mill the influence that the stroke of awl is subjected to the whipstock inclined-plane to a great extent, cause the pole of figure of the rear sleeve of windowing irregular, and the length of valid window has brought certain degree of difficulty also for follow-up brill completion construction.Though adopt the circular arc whipstock of many foldings face that above-mentioned situation is improved, its processing technology complexity, processing cost height.
Summary of the invention
The novel purpose of this employing is to provide a kind of oblique device for casing tube window opening, has solved the conventional plane whipstock irregular problem of window shape of windowing, and this tool processes technology is simple simultaneously, and processing cost is low.
The utility model is mainly by body 1, easily bore overcoat 2, screw 3, lower contact 4 are formed, and body 1 is the column on a band inclined-plane, and a side of body 1 is made up of wide-angle inclined-plane section and low-angle bevel phase, and low-angle section inclined-plane has V-shaped groove, and screw 3 will easily bore overcoat 2 and be fixed on the body 1.
The utility model inclined-plane adopts the V-shaped groove project organization, and processing technology is simple, and processing cost is low, and can guarantee the shape and the orientation of casing sidetracking rear hatch.
Description of drawings
Fig. 1 the utility model structural representation
Specific embodiments
The utility model is described in more detail below in conjunction with accompanying drawing.
The utility model is mainly by body 1, easily bore overcoat 2, screw 3, lower contact 4 are formed, body 1 is the column on a band inclined-plane, can adopt hollow or solid construction, one side of body 1 is made up of wide-angle inclined-plane section and low-angle bevel phase, and low-angle section inclined-plane has V-shaped groove, and screw 3 will easily bore overcoat 2 and be fixed on the body 1.As further improvement of the utility model, its wide-angle inclined-plane also is processed with V-shaped groove.In the process of windowing, window and mill the wide-angle inclined-plane section that awl at first contacts whipstock, and along the V-shaped groove contact sleeve tube wall of whipstock, under the effect of whipstock lateral thrust, beginning milling sleeve pipe.When milling awl when windowing and being displaced downwardly to the low-angle bevel phase, window and mill awl and left window to effective width.Afterwards, window and mill awl and continue descendingly along the low-angle bevel phase, leave sleeve pipe fully smoothly at last and enter the stratum.
Claims (2)
1, a kind of oblique device for casing tube window opening, mainly by body (1), easily bore overcoat (2), screw (3), lower contact (4) are formed, body (1) is the column on a band inclined-plane, it is characterized in that: a side of body (1) is made up of wide-angle inclined-plane section and low-angle bevel phase, and low-angle section inclined-plane has V-shaped groove, and screw (3) will easily bore overcoat (2) and be fixed on the body (1).
2, oblique device for casing tube window opening according to claim 1 is characterized in that: the wide-angle inclined-plane also is processed with V-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133878 CN2835521Y (en) | 2005-11-10 | 2005-11-10 | Whipstock for casing sidetracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133878 CN2835521Y (en) | 2005-11-10 | 2005-11-10 | Whipstock for casing sidetracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835521Y true CN2835521Y (en) | 2006-11-08 |
Family
ID=37300177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520133878 Expired - Lifetime CN2835521Y (en) | 2005-11-10 | 2005-11-10 | Whipstock for casing sidetracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835521Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740678A (en) * | 2017-10-16 | 2018-02-27 | 东北石油大学 | Casing window sidetracking well rolls over face whipstock design method more |
| CN108104753A (en) * | 2017-12-18 | 2018-06-01 | 海林新科石油耐磨工具有限责任公司 | Integrated high-efficiency sidetrack drilling tool |
-
2005
- 2005-11-10 CN CN 200520133878 patent/CN2835521Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740678A (en) * | 2017-10-16 | 2018-02-27 | 东北石油大学 | Casing window sidetracking well rolls over face whipstock design method more |
| CN108104753A (en) * | 2017-12-18 | 2018-06-01 | 海林新科石油耐磨工具有限责任公司 | Integrated high-efficiency sidetrack drilling tool |
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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 |
Granted publication date: 20061108 |
|
| EXPY | Termination of patent right or utility model |