Drilling system, biasing mechanism and method for directionally drilling a borehole
US9556678B2 · kind B2 · utility
6Cited by
49References
81Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | May 16, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/0228
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling system for directional drilling of a borehole includes a biasing mechanism having a pivot associated with a lower bearing assembly, an offset mechanism associated with an upper radial bearing assembly, and a toolface controller, whereby the angular relationship of a drill bit and its toolface angle may be actively managed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.