Subsea choke control system
US6988554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2003 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/025
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A choke actuator having an integrated choke control system enabling fast closure and opening of the choke. The choke control system includes integral electronics to receive signals from a surface or subsea control module and control directional control valves to regulate the flow of hydraulic fluid from a local hydraulic supply to the choke actuator. Response times for choke actuation are greatly reduced by locating the electronic control system and directional control valves in an integrated package with the choke actuator and providing a local hydraulic supply. Additional embodiments may also include other electronic sensing and instrumentation enabling the choke control system to monitor and adjust the choke to maintain selected flow characteristics or in accordance with a predetermined production scheme. Any or all of the components of the choke, the choke control system, or the choke actuator may also be retrievable separately from the other components so as to allow maintenance and replacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.