Wellhead sealing assembly

Details Wellhead sealing assembly Wellhead sealing assembly

1987-09-17

1988-11-15

Dang, Hoang C.

Wells

Above ground apparatus

With assembly or disassembly means

166115, 166125, 166134, 166182, 166208, 166217, 2771166, 2771168, 277118, 285139, E21B 3303

Patent

active

047842229

ABSTRACT:
An improved wellhead sealing assembly having an annular body with an outer diameter sufficient to pass through the interior of the wellhead housing and an inner diameter smaller than the exterior of the wellhead hanger so that it lands on the upper end of the hanger, a metal sealing ring secure to said body and adapted to be positioned between the housing and the hanger, said sealing ring having an inner sealing lip for engaging the exterior of the hanger and an upstanding sealing rim, a plurality of locking segments with arms extending radially through said body and projecting beyond the interior of said body, a plurality of load segment carried by said body and engaging the interior of said sealing rim, load pins extending through said body and engaging the interior of each of said load segments and extending inward through and beyond the interior of said body, and a loading wedge ring supported within said body and movable axially therein to engage said load pins and said locking segment arms to move said locking segments into engagement within the interior of the housing and to move said load pins to move said sealing rim into sealing engagement with the interior annulus surface.

REFERENCES:
patent: 1905122 (1933-04-01), Baash et al.
patent: 3797864 (1974-03-01), Hynes et al.
patent: 4131287 (1978-12-01), Gunderson et al.
patent: 4178020 (1979-12-01), Dopyera
patent: 4421164 (1983-12-01), Galle, Jr.
patent: 4471965 (1984-09-01), Jennings et al.
patent: 4588029 (1986-05-01), Blizzard
patent: 4595053 (1986-06-01), Watkins et al.
patent: 4595063 (1986-06-01), Jennings et al.
patent: 4600055 (1986-07-01), Durst et al.
patent: 4651818 (1987-03-01), Johnson et al.
patent: 4665979 (1987-05-01), Boehm, Jr.
patent: 4691780 (1987-09-01), Galle, Jr. et al.

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