Surface wellhead

Details Surface wellhead Surface wellhead

1987-06-22

1989-01-03

Massie, Jerome W.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166352, 166368, F21B 712

Patent

active

047949880

ABSTRACT:
Surface wellhead apparatus for use in tying-back casing from a subsea structure to a surface structure or when drilling with mudline-supported casing hangers wherein the casing is maintained in tension by means of a lock member which releasably engages with a support surface, the lock member and support surface being, on release, relatively movable in a direction longitudinal of the casing and, on engagement, locked against downward movement of the casing.

REFERENCES:
patent: 3791442 (1974-02-01), Watkins
patent: 4557332 (1985-12-01), Denison et al.

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