Metal-to-metal annulus wellhead style seal with pressure energized from above and below
US10947804B2 · kind B2 · utility
1Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A system is disclosed as including a seal for sealing an area between a hanger and a housing of a wellhead. The seal is provided with at least a notch that defines at least a movable portion such as a wing or a lip. An e-ring is provided for a first energizing of the seal. The movable portion enables pressurized fluid from beneath the seal to cause the movable portion to protrude further against a mating side in the wellhead and the hanger for a second energizing of the seal. This type of seal maintains or improves the sealing of the wellhead in high pressure applications. Methods applied to the above seal are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.