Adjustable downhole motors and methods for use
US7975780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2009 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Feb 22, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to systems and methods for controlling downhole motors and drilling systems incorporating such systems and methods. One aspect of the invention provides a downhole drilling system including: a downhole motor, a transmission coupled to the downhole motor, and a drill bit coupled to the transmission. Another aspect of the invention provides a method of drilling a borehole in a subsurface formation including the steps of: providing a drill string including a downhole motor, a transmission coupled to the downhole motor, and a drill bit coupled to the transmission; and rotating the drill string while flowing a fluid through the drill string to the downhole motor, thereby powering the downhole motor, thereby rotating the transmission and the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.