Subsea tree safety control system
US8347967B2 · kind B2 · utility
3Cited by
31References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Oct 8, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An embodiment of a method for limiting the probability of failure on demand of a subsea test tree (“SSTT”) includes the steps of providing a safety shut-in system for actuating a safety valve of the SSTT, the safety shut-in system including a surface control station positioned above a water surface connected via an umbilical to a subsea control system positioned below the water surface to actuate the safety valve; and diagnostically testing the safety shut-in system without actuating the safety valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.