System and method for directional drilling utilizing clutch assembly
US7178611B2 · kind B2 · utility
64Cited by
62References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2004 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Dec 11, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
According to one embodiment of the invention, a system for directional drilling within a wellbore includes a drill string having an upper portion, a lower portion, a bent motor coupled to the lower portion, and a drill bit coupled to bent motor, and a clutch assembly disposed between the upper and lower portions. The clutch assembly is operable to disengage the upper and lower portions of the drill string and allow the upper portion to rotate while the lower portion does not rotate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.