Subsea safety valve system
US9637998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jul 27, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve system for ensuring well closure upon exposure to a predetermined condition even where a well access line is disposed through the valve. This system may be configured with a supplemental power supply capable of effectuating a cutting closure of the valve. Thus, any obstructing well access line such as coiled tubing may be cut during closure to ensure sealing off of the well, even if the cutting mechanism is separated from its traditional power supply by shear or parting of a portion of the landing string. Once more, the supplemental power sufficient for a cutting closure is only provided in the event of a predetermined condition such as the emergence of a potentially hazardous tubular separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.