Wellhead seal

Details Wellhead seal Wellhead seal

1977-12-21

1978-10-17

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277188R, 277208, 277215, 166 75R, F16J 1520

Patent

active

041205065

ABSTRACT:
In a wellhead for wells such as an oil and/or gas well wherein an elastic annular seal means is employed in the wellhead for sealing the interior thereof from the exterior thereof, the improvement comprising at least one annular resilient back-up means for said seal means, the back-up means comprising a stack of at least two annular resilient members, each member having a plurality of spaced apart protrusions thereon and each member being oriented in relation to its next adjacent member so that the protrusions of each member in the stack abut the adjacent member in between the protrusions of that adjacent member.

REFERENCES:
patent: 2239641 (1941-04-01), Bierend
patent: 3090438 (1963-05-01), Raulins
patent: 3163223 (1964-12-01), Bauer et al.
patent: 3909019 (1975-09-01), Leko

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