Methods and systems for determining angular orientation of a drill string
US7681663B2 · kind B2 · utility
27Cited by
14References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 2006 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Nov 19, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/024
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Preferred methods and systems generate a control input based on a periodically-varying characteristic associated with the rotation of a drill string. The periodically varying characteristic can be correlated with the magnetic tool face and gravity tool face of a rotating component of the drill string, so that the control input can be used to initiate a response in the rotating component as a function of gravity tool face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.