Well intervention tool and method
US9574420B2 · kind B2 · utility
9Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Apr 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/025
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system to control fluid flow through a fluid passage includes a valve that is fail-safe closed to selectively control fluid flow through the fluid passage, and a hydraulic actuator operatively coupled to the valve to open the valve when hydraulic pressure above a predetermined amount is received. The system further includes an inlet to provide hydraulic pressure to the hydraulic actuator and open the valve and an outlet to vent hydraulic pressure from the hydraulic actuator and close the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.