CN2219957Y - Hanging device for whipstock - Google Patents
Hanging device for whipstock Download PDFInfo
- Publication number
- CN2219957Y CN2219957Y CN 93224144 CN93224144U CN2219957Y CN 2219957 Y CN2219957 Y CN 2219957Y CN 93224144 CN93224144 CN 93224144 CN 93224144 U CN93224144 U CN 93224144U CN 2219957 Y CN2219957 Y CN 2219957Y
- Authority
- CN
- China
- Prior art keywords
- whipstock
- slips
- assembly
- hanging
- hanging block
- 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 hanging device for whipstock, belongs to the tool for placing a directional whipstock during side drilling inside the casing pipe of an oil well. The hanging device for whipstock is formed by the successive screwed connection of an upper joint, a guide key, a cutting pin, a hanging block assembly, a mandrel assembly, a slip assembly, a centering block and a guide shoe; during operation under the well, a hanging block arranged on the upper of the hanging device for whipstock is adopted to hang a tool on a lower part land edge whose casing tube is milled, and the lower part of the hanging device for whipstock is provided with three slips which are clamped on the inner wall of the casing tube; the lower part of the hanging block is provided with teeth, and the clips are provided with positive and negative teeth; the matching oblique angle of the slips and the conical surfaces of the slips is smaller than the friction angle of steel. The utility model can prevent rotation under construction and ensure the going on wheels of the construction. The utility model has the advantages of simple structure, convenient operation, reliable working and cost saving.
Description
When the utility model belongs in oil well casing sidetracking, the improvement of laying a kind of tool construction of directional inclination device.
At present in the oil well casing during sidetracking, lay directional inclination device method and divided for three steps; The first step: certain position cementing plug (or laying bridging plug) below the sidetracked hole section; Second step: electric earth anchor, the solid earth anchor of cementing; The 3rd step: following whipstock is placed in whipstock on the earth anchor.This method construction technology complexity, the engineering time is long.
The purpose of this utility model is exactly in order to simplify a kind of whipstock suspension arrangement of laying directional inclination device technology and designing.
The utility model is to realize like this, top connection [1] lower end is connected with axle assembly [5] with screw thread, slips assembly [6] upper end is connected with hanging block assembly [4] with screw thread, the lower end is connected with guide shoe [8] with screw thread, slips is fixed with wiper block [7] with screw thread up and down, be contained in outside the axle assembly [5], be good for [2] by the interior strong groove on hanging block assembly [4] top with the guiding of top connection [1] and combine, and be suspended in the top connection [1] by shear pin [3].Axle assembly [5] is long tubular, and upper end and top connection [1] are with being threaded, and taper is processed in the lower end.The middle part symmetry that hangs assembly [4] is equipped with four hanging blocks, and coil tension spring is housed in the hanging block, and the hanging block lower end is processed with tooth, and slips assembly [6] is uniform to be equipped with 3 slips, and each slips outside all is processed with anti-skidding positive and negative tooth, and reseting spring leaf is housed in the slips.It is 9～6 degree that the lower end bullet slips of axle assembly [5] cooperates the oblique angle.
Figure of description
Fig. 1: whipstock suspension arrangement structural representation
Now, the utility model is further described in conjunction with Figure of description:
When adopting the sleeve pipe tool for cutting or milling, with sidetracked hole section sleeve pipe cut milled after, in the time of need laying whipstock.Adopt the utility model, can be suspended on the precalculated position to whipstock fast, securely.Specifically be achieved like this.By the precedence of going into the well, the utility model, adapter, whipstock are welded with being threaded and putting, again with shear bolt with whipstock with escort assembly and be connected, escort assembly and be linked and packed into tubing string with orientation joint, drill collar, drilling rod successively by screw thread.With the utility model and whipstock assembly, down to the sidetracked hole section, in tubing string, descend the inclinometer orientation, with the whipstock deflecting surface, be fixed to the design orientation, begin to transfer tubing string (forbidding rotating) after the orientation, transfer to when the utility model and to cut when milling the cased well section, four hanging blocks by spring controlled hanging block assembly [4] stretch out, it stretches out the back external diameter greater than casing inner diameter, when continuing to transfer, the lower end of hanging block (band tooth) seat is milling on the shoulder of sleeve pipe lower end, and the assembly of the utility model and whipstock is suspended on the sidetracked hole section.Pressurize to axle assembly of the present utility model [5] by tubing string then, when pressure reaches certain value, the shear pin [3] that connects top connection [1] and hang between the assembly [4] is cut off, top connection [1] concentric shafts assembly [5] is under the guiding of feather key [2], to lower slider, three slips on the cone promotion slips assembly [6] of axle assembly [5] lower end are to overhanging, block internal surface of sleeve pipe, and then continue to pressurize, because pressure effect, whipstock escorts assembly and whipstock breaks away from, and the assembly of the utility model and whipstock is stayed in the well, realizes laying purpose.In pressure process, the cone of pressure by axle assembly [5] lower end continues to exert pressure to three slips of slips assembly [6], with further chucking sleeve pipe.Because the utility model has designed feather key [2], four hanging block lower end band teeth of hanging block assembly [4], it is 9～6 to spend that three slips of slips assembly [6] and the design of the contact surface of sleeve pipe have positive and negative tooth, the conical surface oblique angle that [6] three slips of axle assembly [5] lower end cone and slips assembly cooperate.Guaranteed that whipstock lays firmly, prevented that whipstock rotates in the sidetracking work progress, guaranteed that construction carries out smoothly.
The utility model is laid instrument and is compared with existing, have simple in structure, easy to operate, Simplify construction technology, save the advantages such as operating expenses.
Claims (5)
1. whipstock suspension arrangement, be by top connection, feather key, shear pin, the hanging block assembly, the axle assembly, the slips assembly, wiper block, guide shoe is formed, it is characterized in that: top connection (1) lower end is connected with axle assembly (5) with screw thread, slips assembly (6) upper end is connected with hanging block assembly (4) with screw thread, the lower end is connected with guide shoe (8) with screw thread, on the slips, with bolt wiper block (7) is arranged down, be contained in outside the axle assembly (5), internal keyway by hanging block assembly (4) top combines with the feather key (2) of top connection (1), and is suspended in the top connection (1) by shear pin (3).
2. whipstock suspension arrangement according to claim 1 is characterized in that: axle assembly (5) is that tubular, upper end are connected with screw thread with top connection (1), and the lower end is taper.
3. according to claim 1 or (2) described whipstock suspension arrangement, it is characterized in that: the middle part symmetry of hanging block assembly (4) is equipped with four hanging blocks, and coil tension spring is housed in the hanging block, and the hanging block lower end is processed with tooth.
4. whipstock suspension arrangement according to claim 1 is characterized in that: slips assembly (6) is uniform to be equipped with 3 slips, and each slips outside all is processed with anti-skidding positive and negative tooth, and reseting spring leaf is housed in the slips.
5. whipstock suspension arrangement according to claim 1 and 2 is characterized in that: the lower end bullet of axle assembly (5) cooperates the oblique angle with slips be 9～6 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224144 CN2219957Y (en) | 1993-09-13 | 1993-09-13 | Hanging device for whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224144 CN2219957Y (en) | 1993-09-13 | 1993-09-13 | Hanging device for whipstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219957Y true CN2219957Y (en) | 1996-02-14 |
Family
ID=33802253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93224144 Expired - Fee Related CN2219957Y (en) | 1993-09-13 | 1993-09-13 | Hanging device for whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219957Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395743A (en) * | 2009-05-29 | 2012-03-28 | 维拉国际工业有限公司 | Whipstock attachment to a fixed cutter drilling or milling bit |
| CN104632081A (en) * | 2015-02-04 | 2015-05-20 | 成都大漠石油机械有限公司 | Whipstock beneficial to clamping |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
-
1993
- 1993-09-13 CN CN 93224144 patent/CN2219957Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395743A (en) * | 2009-05-29 | 2012-03-28 | 维拉国际工业有限公司 | Whipstock attachment to a fixed cutter drilling or milling bit |
| CN102395743B (en) * | 2009-05-29 | 2014-10-29 | 维拉国际工业有限公司 | Whipstock attachment to a fixed cutter drilling or milling bit |
| CN104632081A (en) * | 2015-02-04 | 2015-05-20 | 成都大漠石油机械有限公司 | Whipstock beneficial to clamping |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109538121B (en) * | 2019-01-30 | 2024-05-03 | 河南省资源环境调查四院有限公司 | Portable whipstock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |