Formation isolation valve
US7980316B2 · kind B2 · utility
10Cited by
22References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2008 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Feb 21, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve includes a housing, a valve element that is located in the housing, an operator, a locking device and an interference device. The housing includes an interior surface that has a profile. The operator may be configured to transition the valve element between open and closed states. The locking device is adapted to be selectively extended into the profile. The interference device may be adapted to be selectively extended radially inside the locking device to retain the locking device in the profile, thereby locking the valve element in the open or closed state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.