Downhole apparatus having a rotating valve member
US8522886B2 · kind B2 · utility
8Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Dec 7, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/03
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole apparatus adapted to be run on a workstring in a well bore. The apparatus has a body including ports and a valve which is rotatable to open and close the ports to selectively allow fluid flow through the body between regions of a well bore above and below the apparatus. The valve is rotated via a gearbox and motor in the apparatus. A sealing arrangement between the valve and body is also described. A method of running the apparatus in a well bore and monitoring pressure above the apparatus in order to control opening and closing of the valve under predetermined conditions is presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.