Systems and methods for directionally drilling a borehole using a continuously variable transmission
US7234543B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1505
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods for directionally drilling a borehole are provided. One system includes a biasing subsystem that is configured to control a tendency of a bottom hole assembly during drilling of the borehole. The system also includes a continuously variable transmission. An output shaft of the continuously variable transmission is coupled to the biasing subsystem such that the continuously variable transmission is configured to control relative rotation of one or more components of the biasing subsystem during the drilling. One method includes controlling a tendency of a bottom hole assembly during drilling of the borehole using a biasing subsystem. The method also includes controlling relative rotation of one or more components of the biasing subsystem using a continuously variable transmission during the drilling. The one or more components are coupled to an output shaft of the continuously variable transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.