Direction control in well drilling
US6698534B2 · kind B2 · utility
3Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bottom hole assembly for drilling a well, comprising a non-magnetic tubing, an orienter, a motor, a bit fed with drilling fluid which passes through the non-magnetic tubing, and a sensor package contained within the non-magnetic tubing, characterized by a drilling fluid flow tube passing through the non-magnetic tubing adjacent to the sensor package, and means for determining the relative position measurement between the non-magnetic tubing and the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.