CN203463031U - Elbow connector guiding tool - Google Patents
Elbow connector guiding tool Download PDFInfo
- Publication number
- CN203463031U CN203463031U CN201320491256.8U CN201320491256U CN203463031U CN 203463031 U CN203463031 U CN 203463031U CN 201320491256 U CN201320491256 U CN 201320491256U CN 203463031 U CN203463031 U CN 203463031U
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- CN
- China
- Prior art keywords
- tube
- piston
- guiding tool
- base tube
- spring
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- Expired - Fee Related
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Abstract
The utility model relates to a reentry tool for multilateral wells in oilfields, in particular to an elbow connector guiding tool. The elbow connector guiding tool is characterized in that a base tube is connected with the inner wall of the upper end of an upper connector of the elbow connector guiding tool, a piston is mounted in an annular space between the upper connector and the base tube, concave and convex grooves are matched with one another to prevent the inner wall of the piston and the outer wall of the base tube from rotating relatively, a pressure transmitting hole which is communicated with the upper end of the piston is formed in the base tube, an upper spring is sleeved on the outer side of the piston, the lower end of the upper spring is abutted onto a lower ejector bush, a directional tube is connected with the lower end of the base tube, the lower end of the piston and the upper end of a rotary tube are matched with each other via concave and convex teeth, the rotary tube is fixed onto the directional tube by the aid of a shear pin, a lower spring is mounted in an annular space between the rotary tube and the directional tube, the lower end of the lower spring is abutted onto a support ring, a lower connector is connected with the lower end of the rotary tube, and the upper end of the lower connector and the lower end of the directional tube are matched with each other via concave and convex teeth. The elbow connector guiding tool has the advantages that a coiled oil tube is connected with the upper portion of the elbow connector guiding tool, an elbow tube is connected with the lower portion of the elbow connector guiding tool, and can rotate at fixed angles under the effect of a hydraulic pressure, and accordingly reentry can be carried out on a multilateral well window.
Description
Technical field:
The utility model relates to a kind of oil field Multilateral Wells reentry instrument, particularly a kind of bent sub steering tool.
Background technology:
Multilateral Wells reentry technology is after Multilateral Wells application whipstock is windowed, and utilizes drilling rod bottom that bend pipe is installed, and top turns to the process that window is reentried that realizes.Bend pipe top connects coiled tubing according to the actual requirements at present, cannot realize tubing string and rotate.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of bent sub steering tool, and this device top connects coiled tubing, and bottom bridge piece, realizes bend pipe by hydraulic pressure and determine angular turn, thereby realizes the reentry of branch well window.Overcome existing bend pipe top and connected coiled tubing, cannot realize the deficiency that tubing string rotates.
Technical solution adopted in the utility model is: a kind of bent sub steering tool, comprises top connection and lower contact, top connection upper end inwall connects base tube, in annular space between top connection and base tube, piston is installed, between piston inner wall and base tube outer wall, by tongue and groove, coordinate anti-rotation, on base tube, have the pressure transmission hole being communicated with piston upper end, piston outside is set with upper spring, upper spring lower end withstands in lower top cover, base tube lower end connects oriented tube, piston lower end coordinates with swivelling pipe upper end shaggy tooth, swivelling pipe is fixed in oriented tube by shear pin, in annular space between swivelling pipe and oriented tube, lower spring is installed, lower spring lower end withstands on support ring, swivelling pipe lower end connects lower contact, lower contact upper end coordinates with oriented tube lower end shaggy tooth.
The beneficial effects of the utility model are: the utility model top connects coiled tubing, and bottom bridge piece, realizes bend pipe by hydraulic pressure and determine angular turn, thereby realizes the reentry of branch well window.
Accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, a kind of bent sub steering tool, comprises top connection 1 and lower contact 9, top connection 1 upper end inwall connects base tube 3, in annular space between top connection 1 and base tube 3, piston 2 is installed, between piston 2 inwalls and base tube 3 outer walls, by tongue and groove, coordinate anti-rotation, on base tube 3, have the pressure transmission hole being communicated with piston 2 upper ends, piston 2 outsides are set with upper spring, upper spring lower end withstands in lower top cover 4, base tube 3 lower ends connect oriented tube 7, piston 2 lower ends coordinate with swivelling pipe 6 upper end shaggy tooths, swivelling pipe 6 is fixed in oriented tube 7 by shear pin 5, in annular space between swivelling pipe 6 and oriented tube 7, lower spring is installed, lower spring lower end withstands on support ring 8, swivelling pipe 6 lower ends connect lower contact 9, lower contact 9 upper ends coordinate with oriented tube 7 lower end shaggy tooths.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; As long as meet, use needs, all within protection domain of the present utility model.
Claims (1)
1. a bent sub steering tool, comprises top connection (1) and lower contact (9), it is characterized in that: top connection (1) upper end inwall connects base tube (3), in annular space between top connection (1) and base tube (3), piston (2) is installed, between piston (2) inwall and base tube (3) outer wall, by tongue and groove, coordinate anti-rotation, on base tube (3), have the pressure transmission hole being communicated with piston (2) upper end, piston (2) outside is set with upper spring, upper spring lower end withstands in lower top cover (4), base tube (3) lower end connects oriented tube (7), piston (2) lower end coordinates with swivelling pipe (6) upper end shaggy tooth, swivelling pipe (6) is fixed in oriented tube (7) by shear pin (5), in annular space between swivelling pipe (6) and oriented tube (7), lower spring is installed, lower spring lower end withstands on support ring (8), swivelling pipe (6) lower end connects lower contact (9), lower contact (9) upper end coordinates with oriented tube (7) lower end shaggy tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491256.8U CN203463031U (en) | 2013-08-12 | 2013-08-12 | Elbow connector guiding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491256.8U CN203463031U (en) | 2013-08-12 | 2013-08-12 | Elbow connector guiding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463031U true CN203463031U (en) | 2014-03-05 |
Family
ID=50175403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320491256.8U Expired - Fee Related CN203463031U (en) | 2013-08-12 | 2013-08-12 | Elbow connector guiding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463031U (en) |
-
2013
- 2013-08-12 CN CN201320491256.8U patent/CN203463031U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20140812 |
|
| EXPY | Termination of patent right or utility model |