Safety valve lock out system and method
US7252149B2 · kind B2 · utility
1Cited by
3References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Jan 7, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety valve lock out system and method. In a described embodiment, a method of locking out a safety valve in a subterranean well includes the steps of: flowing a hardenable fluid into the safety valve; and preventing a closure device of the safety valve from closing with the hardenable fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.