Subsea wellhead seal assembly
An annular subsea wellhead seal assembly is described for sealing against the walls in a subsea wellhead annulus above a landing seat at the lower end of the annulus comprising: an annular body having an outwardly and downwardly flaring outer skirt and an inwardly and downwardly flaring inner skirt extending from it slower surface, a landing ring having lower landing surface for landing on a landing seat at the lower end of the subsea wellhead annulus in which the assembly is to seal, and an upper flat reaction surface which is positioned immediately under and engagable with the lower ends of the skirts; and means connecting the body and the landing ring for relative movement toward each other; downward movement of the body with respect to the landing ring spreading the skirts outward and inward, respectively, into a substantially horizontal digging engagement set position with the walls of the annulus to be sealed.
- Assignee:
- Cameron Iron Works USA, Inc., Houston, TX
- Patent Number(s):
- US 4759409
- OSTI ID:
- 6867475
- Resource Relation:
- Patent File Date: Filed date 30 Apr 1987
- Country of Publication:
- United States
- Language:
- English
Similar Records
Subsea tubing hanger
Hanger and seal assembly