Steerable drilling system
US7942214B2 · kind B2 · utility
9Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2006 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Nov 16, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A steerable drilling system comprises a rotary drill bit 14 secured to a housing 16, a secondary rotary drill component 22 carried by the housing and rotatable therewith, the second rotary drill component 22 having a gauge dimension greater than that of the rotary drill bit 14, and a drive arrangement operable to displace the secondary rotary drill component 22 relative to the housing 16 while maintaining an axis 24 of the secondary rotary drill component 22 substantially parallel to an axis 18 of the housing 16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.