Subsurface safety valve and method of actuation
US8267167B2 · kind B2 · utility
8Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2009 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Jun 26, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole valve apparatus including a force transmitter configured to move in an axial direction and a valve actuator configured to move in an axial direction. The valve actuator is independently movable relative to the force transmitter and physically isolated from the force transmitter. A first magnetic assembly is disposed at the force transmitter. A second magnetic assembly is disposed at the valve actuator. The first and second magnetic assemblies are configured to repel one another and cause the force transmitter to move the valve actuator when the force transmitter is moved toward the valve actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.