CN204627452U - A kind of drag reduction centralizer - Google Patents
A kind of drag reduction centralizer Download PDFInfo
- Publication number
- CN204627452U CN204627452U CN201520316152.2U CN201520316152U CN204627452U CN 204627452 U CN204627452 U CN 204627452U CN 201520316152 U CN201520316152 U CN 201520316152U CN 204627452 U CN204627452 U CN 204627452U
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- CN
- China
- Prior art keywords
- ball bearing
- bearing supporting
- positive cover
- supporting positive
- centralizer
- 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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Abstract
The utility model relates to the tubing string linkage in a kind of well maintenance operation, particularly a kind of drag reduction centralizer.The body upper end of this device is designed with top connection, and body lower end is designed with lower contact, body is set with ball bearing supporting positive cover, is provided with ball between body and ball bearing supporting positive cover, and ball bearing supporting positive cover outer wall is provided with spherical roller.The utility model achieves the radial direction and the axial rub resistance that are removed, cut down in rotary course whole tubing string by the ball in spherical roller and ball bearing supporting positive cover at tubing string, effectively can improve moment of torsion and lifting force transmission efficiency.Overcome existing centralizer and there is no the deficiency of cutting down string friction in the axial direction.
Description
Technical field:
The utility model relates to the tubing string linkage in a kind of well maintenance operation, particularly a kind of drag reduction centralizer.
Background technology:
In well maintenance operation process, in order to reduce the friction of tubing string and the borehole wall, often centralizer can be used.All there is certain defect in centralizer conventional at present, between tubing string and the borehole wall, frictional force is very large.Rod formula centralizer is only effective in raising moment of torsion transmission efficiency.And there is no the related measure cutting down frictional force in the axial direction.In addition, single-point righting easily strengthens the amount of deflection of drilling tool, makes instrument in milling process unstable, produces pendulum effect.It is therefore, a kind of that novel can to reduce the development and Application of the centralizer of frictional force in axis, radial direction just very necessary.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of drag reduction centralizer, the arrangement achieves the radial direction and the axial rub resistance that are removed, cut down in rotary course whole tubing string by the ball in spherical roller and ball bearing supporting positive cover at tubing string, effectively can improve moment of torsion and lifting force transmission efficiency.Overcome existing centralizer and there is no the deficiency of cutting down string friction in the axial direction.
Technical solution adopted in the utility model is: a kind of drag reduction centralizer, comprises body; Body upper end is designed with top connection, and body lower end is designed with lower contact, body is set with ball bearing supporting positive cover, is provided with ball between body and ball bearing supporting positive cover, and ball bearing supporting positive cover outer wall is provided with spherical roller.
The beneficial effects of the utility model are: the utility model is removed at tubing string by the ball in spherical roller and ball bearing supporting positive cover, cut down radial direction and the axial rub resistance of whole tubing string in rotary course, effectively can improve moment of torsion and lifting force transmission efficiency.
Accompanying drawing illustrates:
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.
Fig. 2 is that the A-A of Fig. 1 is to sectional drawing.。
Detailed description of the invention:
As shown in Figure 1 and Figure 2, a kind of drag reduction centralizer, comprises body; Body upper end is designed with top connection 1, and body lower end is designed with lower contact 4, body is set with ball bearing supporting positive cover 3, is provided with ball between body and ball bearing supporting positive cover 3, and ball bearing supporting positive cover 3 outer wall is provided with spherical roller 2.
Upper lower contact of the present utility model is connected in the middle of tubing string, transfers in tubing string process, and the spherical roller 2 of ball bearing supporting positive cover 3 outer wall contacts with casing wall, and the axial static frictional force of tubing string is converted into force of rolling friction; When tubing string rotates, the ball in ball bearing supporting positive cover 3 rotates, and ball bearing supporting positive cover 3 is reduced with the frictional force of internal surface of sleeve pipe.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a drag reduction centralizer, comprises body; It is characterized in that: body upper end is designed with top connection (1), body lower end is designed with lower contact (4), body is set with ball bearing supporting positive cover (3), between body and ball bearing supporting positive cover (3), ball is installed, ball bearing supporting positive cover (3) outer wall is provided with spherical roller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316152.2U CN204627452U (en) | 2015-05-15 | 2015-05-15 | A kind of drag reduction centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316152.2U CN204627452U (en) | 2015-05-15 | 2015-05-15 | A kind of drag reduction centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204627452U true CN204627452U (en) | 2015-09-09 |
Family
ID=54046491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520316152.2U Expired - Fee Related CN204627452U (en) | 2015-05-15 | 2015-05-15 | A kind of drag reduction centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204627452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU191425U1 (en) * | 2019-04-04 | 2019-08-05 | Общество с ограниченной ответственностью "Биттехника" | ROTARY COLUMN CENTER |
-
2015
- 2015-05-15 CN CN201520316152.2U patent/CN204627452U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU191425U1 (en) * | 2019-04-04 | 2019-08-05 | Общество с ограниченной ответственностью "Биттехника" | ROTARY COLUMN CENTER |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160515 |