Casing hanger

Details Casing hanger Casing hanger

1977-06-21

1979-05-01

Gelak, Bernard A.

Pipe joints or couplings

Serial,relatively movable portions

Linked ball and socket portions

24263DT, 24263D, E21B 1910, A44G 2100

Patent

active

041520157

ABSTRACT:
A casing hanger for supporting a casing from a casing head within a well bore having a split ring with sealing means attached thereto, a plurality of gripping assemblies supported from the split ring and each of said assemblies including a body with an inwardly facing recess and an exterior surface which tapers downward and inward, to seat in the casing head bowl a plurality of gripping dogs having a generally horizontal gripping edge extending radially inward from the body, and a deformable backing positioned within the space between the outer edge of said dogs and the body recess, the backing partially filling the space behind the dogs and having space into which the backing may move on deformation, the backing providing varying areas in support of each gripping dog and being relatively yieldable.

REFERENCES:
patent: 1560701 (1925-11-01), Layton
patent: 1908652 (1933-05-01), Adair
patent: 2071637 (1937-02-01), Laurent
patent: 2134468 (1938-10-01), Bashara
patent: 2676036 (1954-04-01), Arrowood
patent: 2785454 (1957-03-01), Young
patent: 3531836 (1970-10-01), Crickmer

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