Wellbore directional steering tool
US6808027B2 · kind B2 · utility
16Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2001 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for selectively controlling the direction of a well bore comprising a mandrel rotatable about a rotation axis; a direction controller means comprising at least two parts configured to apply a force to said mandrel with a component perpendicular to the said rotation axis; a housing having an eccentric longitudinal bore forming a weighted side and being configured to freely rotate under gravity; and a driver for selectively varying the angle of the force relative to the weighted side of the housing about said rotation axis, the driver being configured to move the two parts independently of one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.