Failsafe subsurface controlled safety valve
US9745830B2 · kind B2 · utility
4Cited by
14References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Embodiments of the invention generally relate to a failsafe subsurface controlled safety valve. In one embodiment, a failsafe subsurface controlled safety valve assembly includes: a tubular housing; a closure member disposed in the tubular housing, wherein the closure member is movable between a closed position and an open position; an operating piston operable to move the closure member between the closed position and the open position; and a trigger piston operable to move the closure member from the open position to the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.