Barrier valve hydraulic operator with compound valve opening force feature
US8893798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2010 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Oct 31, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A housing can be mounted adjacent an isolation valve and after a fixed number of on and off pressure cycles allow a spring to push an actuator to operate the valve to an open position. The actuator, can be reset with a tool run into the module to move the actuator back against a power spring and hold that spring force until the pressure cycling begins again. The preferred application is for a formation isolation ball valve but other valves, such as sliding sleeves, or other types of downhole tools can be actuated with the module that permits a retrofit of a hydraulic operation to a heretofore purely mechanically actuated tool. The actuation force to initially open is boosted by a secondary potential energy source that is unlocked to give an initial boost force to the indexing spring that is part of a j-slot actuation mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.