Sequential retrieval mechanism for bi-directional wellhead annulus packoff
US11649689B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2021 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Nov 10, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wellhead annulus packoff and an associated method is disclosed. A retainer lock mechanism of the wellhead annulus packoff is to sit at least partly within a first indentation of a hanger. The retainer lock mechanism includes a bottom surface and a side surface so that the bottom surface is to be associated with a lower energizing ring and the side surface is to be engaged in an energized state with a first side of the seal element. A second side of the seal element is to abut with a surface of a housing and a slot of the seal element is to abut with the lower energizing ring in the energized state of the wellhead annulus packoff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.