Control system with failsafe feature in the event of tubing rupture
US6866101B2 · kind B2 · utility
12Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved control system, particularly useful for SSVs, is disclosed. It is responsive to a rupture of the tubing and control line to equalize pressure on an operating piston to allow the SSV to go to its failsafe position. The annulus pressure-sensing feature can be employed with a variety of control systems, a particular one is used as an example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.