Downhole safety valve apparatus and method
US7637326B2 · kind B2 · utility
37Cited by
6References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety valve (100) replaces an existing safety valve (102) in order to isolate a production zone from a tubing string when closed. Preferably the safety valve (100) includes a flow interruption device (106) displaced by an operating conduit extending from a surface location to the safety valve (100) through the inside of the production tubing. A by-pass conduit (150) allows communication from a surface location to the production zone through the safety valve (100) without affecting the operation of the safety valve (100).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.