Securement arrangement for securing casing inside a subsea wellhead
US9273532B2 · kind B2 · utility
4Cited by
53References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2011 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Oct 5, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/043
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellhead securement arrangement releasably clamps casing strings such that they cannot move in an upwards or downwards longitudinal direction. Prior to being clamped, the securement arrangement secures the casing strings in a first position whereby cement returns are able to flow around the hangers towards the surface. Once cemented, the casing strings are released and moved upwardly, where the securement arrangement clamps the hangers into position, thus creating an axial load on the casing strings while also preventing movement in the upward and downward longitudinal directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.