Wellhead seal

Details Wellhead seal Wellhead seal

1987-04-30

1988-12-20

Dang, Hoang C.

Wells

Above ground apparatus

With assembly or disassembly means

166115, 166182, 166208, 166217, 2771166, 2771168, 277118, 277236, 285146, E21B 3304

Patent

active

047919876

ABSTRACT:
An improved wellhead seal for sealing across the annular space between the exterior of a hanger and the interior of a wellhead housing having a seal ring with upper and lower rims, resilient metal lips on the interior of said lower rim for engaging the exterior of the hanger and gripping and sealing elements on the exterior of the upper rim and multiple camming surfaces on the interior of the upper rim and an actuating ring having multiple camming surfaces mating with the multiple camming surfaces on the upper rim so that downward movement of said actuating ring cams the gripping and sealing elements on said upper rim into tight metal-to-metal sealing engagement with the housing interior sealing surface. The sealing may be accomplished directly between the exterior of a hanger rim or by a seal ring positioned between the hanger rim and the interior housing surface.

REFERENCES:
patent: 1683640 (1928-09-01), Weise
patent: 2953406 (1960-09-01), Young
patent: 3719375 (1973-03-01), Nordin
patent: 4131287 (1978-12-01), Gunderson et al.
patent: 4178020 (1979-12-01), Dopyera
patent: 4573537 (1986-03-01), Hirasuna et al.
patent: 4595053 (1986-06-01), Watkins et al.
patent: 4650225 (1987-03-01), Le et al.
patent: 4665979 (1987-05-01), Boehm, Jr.
patent: 46476845 (1987-03-01), Boeker

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