Emergency suspension system for drill casings

Details Emergency suspension system for drill casings Emergency suspension system for drill casings

1989-06-14

1990-09-18

Arola, Dave W.

Pipe joints or couplings

Serial,relatively movable portions

285339, 188 67, F16L 2100

Patent

active

049573136

ABSTRACT:
The invention provides an emergency suspension system for use particularly with drill casings in a wellhead. The system, which is intended to surround the casing, comprises an annular bowl member (6) having an internal tapered annular space (16) which reduces in diameter from its upper to its lower end and a support means comprising an annular support element arrangement (28) at least partially formed from resilient material and a plurality of support members (20,22,24) at least partially embedded in said resilient material and having a circular cross-section in at least one direction, said members forming a plurality of annular arrays adapted to surround said tubular member, the uppermost of said arrays (20) comprising support members having said circular cross-section larger than that of a lowermost (24) of said arrays.

REFERENCES:
patent: 1754132 (1930-04-01), Bekkum
patent: 1827257 (1931-10-01), Parker
patent: 1933935 (1933-11-01), Santiago
patent: 2182797 (1939-12-01), Dillon
patent: 2283975 (1942-05-01), Dillon
patent: 2463235 (1949-03-01), Andrews
patent: 3067820 (1962-12-01), Green
patent: 3653688 (1972-04-01), Sakakibara

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