Casing tensioning mechanism for a casing hanger

Details Casing tensioning mechanism for a casing hanger Casing tensioning mechanism for a casing hanger

1990-01-18

1991-03-26

Neuder, William P.

Wells

Processes

Placing or shifting well part

166208, 166215, E21B 4310

Patent

active

050021311

ABSTRACT:
A mechanism mounts to a casing hanger for supporting the casing in tension. The mechanism includes a plurality of dogs mounted around the exterior of the casing hanger. Each of the dogs has wickers on its exterior which engage wickers formed in the bore of a wellhead housing. The dogs are carried within a recess. The recess has upper and lower parallel conical shoulders. A sleeve retains the dogs in a retracted position until tension has been applied. The sleeve releases the dogs by rotational movement of the running tool which runs the casing hanger.

REFERENCES:
patent: Re31881 (1985-05-01), Lindsey, Jr.
patent: 2589337 (1952-03-01), Burns
patent: 2944604 (1960-07-01), Baker
patent: 3104708 (1963-01-01), Orr et al.
patent: 3152643 (1964-10-01), Burns
patent: 3581817 (1971-06-01), Kammerer, Jr.
patent: 3736984 (1973-06-01), Garrett
patent: 3933376 (1976-01-01), Cugini
patent: 4497367 (1985-02-01), Stevenson
patent: 4702313 (1987-10-01), Greenlee et al.
patent: 4784222 (1988-11-01), Ford
patent: 4813486 (1989-03-01), Wyatt et al.
patent: 4823871 (1989-04-01), McEver et al.
patent: 4825954 (1989-05-01), Baugh
patent: 4949787 (1990-08-01), Brammer et al.

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