Subsea wellhead seal assembly

Details Subsea wellhead seal assembly Subsea wellhead seal assembly

1987-04-30

1988-07-26

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166182, 166196, 166208, 277117, 277205, 277236, 285139, 2853824, E21B 33043

Patent

active

047594098

ABSTRACT:
An improved subsea wellhead seal assembly include an annular body having a pair of lower annular skirts, one extending downwardly and outwardly and the other extending downwardly and inwardly, a lower landing ring and means movably securing the lower landing ring to the annular body so that, when the lower landing ring is landed, the annular body continues its downward movement to deform the annular skirts outwardly and inwardly into sealing engagement with the walls of the annulus. A reaction ring is provided above landing ring for engagement by the ends of skirts and spacer rings may be used to preselect the level of the sealing surface engagement by the skirts.

REFERENCES:
patent: 2456081 (1948-12-01), Penick
patent: 2956822 (1960-10-01), Kates
patent: 4131287 (1978-12-01), Gunderson et al.
patent: 4353420 (1982-10-01), Miller
patent: 4353560 (1982-10-01), Tohill
patent: 4384726 (1983-05-01), Meyer
patent: 4588030 (1986-05-01), Blizzard
patent: 4595053 (1986-06-01), Watkins et al.

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