CN2709628Y - Arc surface whipstock for side wall drilling - Google Patents
Arc surface whipstock for side wall drilling Download PDFInfo
- Publication number
- CN2709628Y CN2709628Y CN 200420064353 CN200420064353U CN2709628Y CN 2709628 Y CN2709628 Y CN 2709628Y CN 200420064353 CN200420064353 CN 200420064353 CN 200420064353 U CN200420064353 U CN 200420064353U CN 2709628 Y CN2709628 Y CN 2709628Y
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- Prior art keywords
- plane
- inclined plane
- whipstock
- cylinder
- fastening devices
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- Expired - Lifetime
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Abstract
The utility model relates to an arc surface whipstock for side wall drilling, which is mainly used for the side wall drilling windowing of the sleeve tube of oilfield well drilling. The cylinder inclined plane and the inclined plane fixing equipment are integrally formed as one part in the previous whipstock, which is easy to cause the deviation of the windowing orientation and the irregularity of the windows. The whipstock of the utility model is composed by a cylinder inclined plane and an inclined plane fixing equipment. The utility model is characterized in that the inclined plane of the cylinder inclined plane is in circular arc shape, the bottom edge of the lower end of the circular arc face of the cylinder inclined plane is a round angle edge, the bottom edge of the lower end of the corresponding side of the arc surface of the cylinder inclined plane is a right-angle edge, and the lower end of the cylinder inclined plane and the upper end of the inclined plane fixing equipment are hinged together by a movable hinge. The circular arc-shaped inclined plane is hinged with the one-way movable hinge to effectively control the orientation of side wall drilling. The stationary slip cooperated with the sliding block slip plays a fixing role to the whipstock together.
Description
Technical field
The utility model relates to a kind of sidetracked hole cambered surface whipstock, and the sidetracking that is mainly used in the oil drilling middle sleeve is windowed, and belongs to the special jewel well tool in the petroleum machinery.
Background technology
At present, the sidetracked hole casing sidetracking is widely used in the oilfield old well transformation or overlaps the oil-gas Layer exploitation more, in the sidetracked hole process, whipstock is the sidetracking used always the drilling tool of windowing, whipstock is made of cylinder inclined-plane and inclined-plane fastening devices usually, be equipped with on the inclined-plane fastening devices and set upright shell fragment, slips and pressure-bearing pipe nipple, can play whipstock and set upright placed in the middle and stabilization, the cylinder inclined-plane and the inclined-plane fastening devices of original whipstock are one, like this when sidetracking creeps into, the top drilling tool drives and mills continuous milling sleeve pipe of awl and cylinder inclined-plane, mechanical oscillation and rotation often pass to fastening devices by the inclined-plane, cause fastening devices to take place loosening or the inclined-plane rotation, cause actual orientation and the deviation of presetting the orientation of windowing of windowing, the window shape of windowing is irregular, for the subsequent production construction hides some dangers for.
Summary of the invention
The purpose of this utility model is to provide a kind of sidetracked hole whipstock that prevents that the problems referred to above from taking place, mechanical oscillation and rotation are to the influence of whipstock when creeping into to reduce and to reduce milling, improve the sidetracked hole precision of windowing, guarantee on the orientation of design, to realize casing sidetracking.
The utility model adopts following technical scheme:
A kind of sidetracked hole cambered surface whipstock, constitute by cylinder inclined-plane and inclined-plane fastening devices successively from top to bottom, the inclined-plane fastening devices by the fastening devices body, set upright shell fragment, stationary slip, slide block slips and pressure-bearing pipe nipple and constitute, the inclined-plane that it is characterized in that the cylinder inclined-plane is circular arc, the base of the arc surface lower end on cylinder inclined-plane is a round edge, the base of the relative side lower end of the cambered surface on cylinder inclined-plane is a right-angle side, lower end, cylinder inclined-plane is connected by hinges with fastening devices top, inclined-plane, the cylinder surface bottom is a centre drawer hinge bracket, and fastening devices top, inclined-plane is a centre drawer hinge.
The inclined-plane on above-mentioned cylinder inclined-plane adopts arc surface, base, cylinder inclined-plane is connected with the inclined-plane fastening devices is that folk prescription connects to hinges, can control the orientation of sidetracking effectively, overcomes the overhanging beam effect; Side in fastening devices in the inclined-plane fastening devices adopts two cover stationary slips up and down, the employing one cover slide block slips of corresponding opposite side, stationary slip plays the anti-rotation effect, the slide block slips plays anti-loosening up and down effect, and stationary slip cooperates the fixedly effect of whipstock of having played jointly with the slide block slips.
Description of drawings
Fig. 1, cambered surface whipstock structural representation
Among Fig. 1, sleeve pipe 1, cylinder inclined-plane 2, fastening devices 3, set upright shell fragment 4, stationary slip 5, slide block slips 6, pressure-bearing pipe nipple 7, round edge 8, right-angle side 9, hinge 10.
Fig. 2, the horizontal sectional view on cambered surface whipstock cylinder inclined-plane
The specific embodiment
Cambered surface whipstock of the present utility model, before instrument is gone into the well, earlier at the window's position, the cementing plug face, and then the cambered surface whipstock is delivered to the precalculated position with running tool.
Sidetracked hole cambered surface whipstock, constitute by cylinder inclined-plane 2 and inclined-plane fastening devices 3, the inclined-plane fastening devices by fastening devices 3 bodies, set upright shell fragment 4, stationary slip 5, slide block slips 6 and pressure-bearing pipe nipple 7 and constitute, the inclined-plane that it is characterized in that cylinder inclined-plane 2 is circular arc, the base of the arc surface lower end on cylinder inclined-plane is a round edge 8, the base of the relative side lower end of the cambered surface on cylinder inclined-plane is a right-angle side 9, lower end, cylinder inclined-plane is connected by hinges 10 with fastening devices top, inclined-plane, the cylinder surface bottom is a centre drawer hinge bracket, and fastening devices top, inclined-plane is a centre drawer hinge.
The advantage of the utility model cambered surface whipstock is to control the window orientation that sidetracking is windowed preferably, and the lower bevel fastening devices can realize tightening reliable and stable.
Claims (2)
1, a kind of sidetracked hole cambered surface whipstock, constitute by cylinder inclined-plane (2) and inclined-plane fastening devices (3) successively from top to bottom, the inclined-plane fastening devices is by fastening devices (3) body, set upright shell fragment (4), stationary slip (5), slide block slips (6) and pressure-bearing pipe nipple (7) constitute, the inclined-plane that it is characterized in that cylinder inclined-plane (2) is circular arc, the base of the arc surface lower end on cylinder inclined-plane is round edge (8), the base of the relative side lower end of the cambered surface on cylinder inclined-plane is right-angle side (9), lower end, cylinder inclined-plane is connected by hinges (10) with fastening devices top, inclined-plane, the cylinder surface bottom is a centre drawer hinge bracket, and fastening devices top, inclined-plane is a centre drawer hinge.
2, sidetracked hole as claimed in claim 1 cambered surface whipstock is characterized in that a side of inclined-plane fastening devices (3) adopts two cover stationary slips (5) up and down, and corresponding opposite side adopts a cover slide block slips (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420064353 CN2709628Y (en) | 2004-06-01 | 2004-06-01 | Arc surface whipstock for side wall drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420064353 CN2709628Y (en) | 2004-06-01 | 2004-06-01 | Arc surface whipstock for side wall drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2709628Y true CN2709628Y (en) | 2005-07-13 |
Family
ID=34852145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420064353 Expired - Lifetime CN2709628Y (en) | 2004-06-01 | 2004-06-01 | Arc surface whipstock for side wall drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2709628Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165161A (en) * | 2021-12-10 | 2022-03-11 | 通化红光石油机械有限责任公司 | Slope guiding device |
-
2004
- 2004-06-01 CN CN 200420064353 patent/CN2709628Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165161A (en) * | 2021-12-10 | 2022-03-11 | 通化红光石油机械有限责任公司 | Slope guiding device |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140601 Granted publication date: 20050713 |