Valve mechanism for rotary steerable tool and methods of use
US11015393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2016 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Feb 10, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure includes systems and methods for steering a rotary drilling tool used in subterranean drilling operations. The methods of the present disclosure may be suitable for steering a drilling tool comprising rotating a drill string coupled to a drill bit about its axis to form a wellbore; controlling a rotary motor disposed within the drill string to selectively open and close one or more of a plurality of gate valves to hydraulically actuate a corresponding one or more plurality of steering pads by, in an open position, allowing pressurized fluid to contact corresponding interior surfaces of the corresponding one or more plurality of steering pads to push the one or more plurality of steering pads into contact with a portion of the wellbore to deflect the drill bit away from the portion of the wellbore. The movable steering pads may be selectively extended so as to contact the portion of the wellbore at the same relative rotational position as the tool rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.