Well apparatus and method

Details Well apparatus and method Well apparatus and method

1989-08-25

1991-02-26

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166344, 166348, 1661177, 166387, 285 39, 285140, F16L 2712, E21B 33035

Patent

active

049954644

ABSTRACT:
There is disclosed an offshore well installation wherein a shoulder of a casing hanger body supported within a casing head on a platform at the water surface has been lowered onto a seat in the head so as to support a casing string anchored at its lower end to a mudline hanger in tension, the lower end of the hanger body being connected to the upper end of the string by an adjustable sub which is manpulated by a tool lowered through the hanger body and into the sub so as to adjust it from an extended position in which its shoulder is above the seat in the head to a retracted position in which the shoulder is seated on the head and the casing string is placed in tension.

REFERENCES:
patent: 3672705 (1972-06-01), Rush
patent: 4239083 (1980-12-01), Silberman et al.
patent: 4634152 (1987-01-01), Pettit
patent: 4674576 (1987-06-01), Goris et al.
patent: 4714111 (1987-12-01), Brammer
patent: 4719971 (1988-01-01), Owens
patent: 4757860 (1988-07-01), Reimert
patent: 4823871 (1989-04-01), McEver et al.
patent: 4836288 (1989-06-01), Wester

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