Open water recoverable drilling protector
US8322441B2 · kind B2 · utility
39Cited by
20References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Dec 7, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and system for retrieving a wear bushing from within a subsea wellhead assembly. The system includes a retrieval tool deployable on a wireline that inserts within the bushing. Latches on the tool radially project outwards and mate with a groove on the bushing inner surface. A hydraulically actuated jack is included with the tool and projects downward to the wellhead assembly to pull the bushing from its temporary coupling in the wellhead assembly. A remotely operated vehicle can be used to assist deploying the tool and for supplying hydraulics and/or control for operating the latch and the jack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.