Wellhead annular seal

Details Wellhead annular seal Wellhead annular seal

E - Fixed Constructions

21

B

166/47

E21B 43/12 (2006.01) E21B 33/03 (2006.01) E21B 33/04 (2006.01) E21B 33/00 (2006.01)

Patent

CA 1289059

Abstract An improved annular seal and hanger which are to be installed in a wellhead housing. The annular seal assembly includes seal ring having a central body with upper outer rim, upper inner rim, lower outer rim and lower inner rim extending from said central body, an upper wedge ring, a lower wedge ring and means connecting said rings to allow setting movement thereof, means releasably securing said assembled rings to the hanger for running into the wellhead housing, each of said rims including an outer sealing lip, the outer sealing lips having a free diameter less than the diameter of the lower wedge ring so that the sealing lips are protected during running of the hanger into the wellhead housing and means for moving said wedge rings into the space between the rims of said seal ring for urging the sealing lips into sealing engagement with the interior sealing surface of said housing.

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