Fluid seal with swellable material packing
US9085949B2 · kind B2 · utility
0Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/46
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure provides a casing seal for a wellhead, including a casing with an internal surface having an annular groove therein. A fluid seal is disposed in the annular groove and includes an internal bead for sealing against a cylindrical surface of an inner case or tube. A swellable material is disposed within the annular groove and surrounds the fluid seal. An energizing port is in communication with the annular groove for delivering fluid to the swellable material to cause the swellable material to expand and further load the fluid seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.