Casing hanger and seal

Details Casing hanger and seal Casing hanger and seal

1990-07-23

1991-07-16

Britts, Ramon S.

Wells

Above ground apparatus

Inner member anchor or seal with valve

166 88, 166207, 285142, 285146, 285147, E21B 3300

Patent

active

050316966

ABSTRACT:
An improved casing hanger and seal assembly includes a split seal ring disposed between annular plates on a support shoulder in a wellhead. A plurality of floating pedestals are received within the seal ring. A slip and bowl assembly is mounted over the seal ring in the head, and when loaded by the casing weight provides the force to energize the seal ring to seal the casing and head. The floating pedestals provide stops to limit seal energization to a predetermined amount, and are movable with the seal ring to assist in distributing stress equally across the cross-section of the seal ring.

REFERENCES:
patent: 1727583 (1929-09-01), Cant
patent: 1728432 (1929-09-01), Mildren
patent: 1825774 (1931-10-01), Boynton
patent: 2610689 (1952-09-01), Eckel
patent: 2683045 (1954-07-01), Brooks
patent: 2712455 (1955-07-01), Neilon
patent: 3134610 (1964-05-01), Musolf
patent: 3204695 (1965-09-01), Murray, Jr.
patent: 3255823 (1966-06-01), Barton
patent: 3287035 (1966-11-01), Greenwood
patent: 4306742 (1981-12-01), Hardcastle

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