Annular seal assembly with axial load decoupling feature
US11867018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2022 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Aug 19, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An annular seal system for sealing between a casing hanger and a wellhead housing, the system including an actuator ring having a rigid portion and a flexible portion, and a lockdown ring positioned adjacent the actuator ring. The annular seal system further includes a seal assembly capable of moving between a de-energized position and an energized position, wherein the seal assembly in the de-energized position has a defined a space between the seal assembly and the rigid portion of the actuator ring, wherein the seal assembly in the energized position has the space closed, wherein the rigid portion of the actuator ring is to contact a surface of the casing hanger, wherein the flexible portion of the actuator ring is to push the lockdown ring into engagement with the wellhead, and wherein the flexible portion of the actuator ring adapted is to axially compress to allow positional variation between the lockdown ring and the wellhead housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.