Wellhead apparatus

Details Wellhead apparatus Wellhead apparatus

1989-07-28

1991-06-25

Novosad, Stephen J.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Nipple sealed to plate

166208, 166217, 166348, 285321, E21B 4301, F16L 3900

Patent

active

050260979

ABSTRACT:
There is disclosed apparatus for use in suspending an inner case within an outer casing of an offshore well at the ocean floor, which includes an outer body adapted to be connected to the outer casing for lowering therewith into a landed position at the ocean floor, a hanger body adapted to be connected to the inner casing for lowering therewith into the bore of the outer hanger body, and first and second circumferentially split rings carried about the hanger body for radial movement with respect thereto between contracted and expanded positions in which they may be moved with the hanger body into and out of the bore and normally expanded expansion in which they are seated within the bore of the outer body to support the hanger body from the outer body.

REFERENCES:
patent: 3437356 (1969-04-01), Todd et al.
patent: 3918747 (1975-11-01), Putch
patent: 4181331 (1980-01-01), Cowan
patent: 4379488 (1983-04-01), Hamm
patent: 4901793 (1990-02-01), Weber

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