Wellhead housing seal assembly for damaged sealing surfaces

Details Wellhead housing seal assembly for damaged sealing surfaces Wellhead housing seal assembly for damaged sealing surfaces

1991-03-15

1992-04-14

Britts, Ramon S.

Wells

Processes

Assembling well part

166 82, 2771675, 277236, 2853342, E21B 3303, F16J 1508

Patent

active

051039150

ABSTRACT:
A seal assembly for a wellhead housing and wellhead connector will seal even if the primary sealing surface becomes damaged. The wellhead connector and the wellhead housing each have primary sealing surfaces. A seal ring with upper and lower conical surfaces will seal against the surfaces of the wellhead connector and the wellhead housing. The wellhead housing also has a secondary sealing surface that extends down from the primary sealing surface. In the event that the primary sealing surface becomes damaged, a seal is utilized that has a support section and a lower seal surface. The support section does not sealingly contact the damaged primary seal surface on the wellhead housing. The lower seal surface engages the secondary seal surface of the wellhead housing to perform sealing.

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patent: 4563025 (1986-01-01), Poe
patent: 4709933 (1987-12-01), Adamek et al.
patent: 4867483 (1989-09-01), Witt et al.
patent: 4913464 (1990-04-01), Taylor et al.
patent: 5039140 (1991-08-01), Szymczak

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