Tubing retrievable surface controlled subsurface safety valve
US4201363A · kind A · utility
19Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Jul 17, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1789
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a tubing retrievable surface controlled subsurface safety valve having provisions for blocking communication of control fluid to the valve's pressure responsive operator and for locking the valve open in the event of valve failure. This abstract of the disclosure is neither intended to define the scope of the invention which, of course, is measured by the claims nor is it intended to limit the invention in any way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.