Rotary steerable motor system for underground drilling
US7389830B2 · kind B2 · utility
34Cited by
12References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Nov 1, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A preferred embodiment of a system for rotating and guiding a drill bit in an underground bore includes a drilling motor and a drive shaft coupled to drilling motor so that drill bit can be rotated by the drilling motor. The system further includes a guidance module having an actuating arm movable between an extended position wherein the actuating arm can contact a surface of the bore and thereby exert a force on the housing of the guidance module, and a retracted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.