Subsea well casing hanger packoff system

Details Subsea well casing hanger packoff system Subsea well casing hanger packoff system

1988-12-06

1990-02-13

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

2771162, 277117, 277205, 277236, 166115, 166209, 166217, F16J 1508, F21B 3304

Patent

active

049000411

ABSTRACT:
An improved metal-to-metal seal packoff system for establishing a high pressure metallic barrier between concentric tubular elements, such as a wellhead housing and a casing hanger, including a seal element with a pair of annular metal sealing lips that are energized by the wedging force of an expander mandrel having a cross-sectional configuration resembling a tuning fork with depending legs.

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patent: 4480703 (1984-11-01), Garrett
patent: 4595053 (1986-06-01), Watkins et al.
patent: 4655979 (1987-05-01), Boehm, Jr.

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