Hydraulic and earth engineering – Marine structure or fabrication thereof – In or on frozen media
Patent
1982-02-03
1984-10-30
Husar, Cornelius J.
Hydraulic and earth engineering
Marine structure or fabrication thereof
In or on frozen media
405205, 405211, E02D 2100, E02D 2302, E02D 3100
Patent
active
044797427
ABSTRACT:
A floatable bottom-founded caisson is disclosed that is suitable for use in ice-covered waters. The annular caisson structure has a frusto-conical upwardly tapered inner wall which reduces skin friction between itself and the core fill material. By the application of heat and the use of insulation, freezing of the core fill material is prevented; this feature, together with the tapered wall, enables the caisson to be easily raised and moved to a new position. The outer, or perimetrical, wall is inclined to aid upward fracturing of the ice impinging on it. The caisson carries a deck structure for the support of offshore drilling or other equipment.
REFERENCES:
patent: 2235695 (1941-03-01), Ackley
patent: 2332227 (1943-10-01), Jackson
patent: 2472869 (1949-06-01), Travers
patent: 3668368 (1972-06-01), Moldskred
patent: 3972199 (1976-08-01), Hudson et al.
patent: 4187039 (1980-02-01), Jahns et al.
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patent: 4260292 (1981-04-01), Steddum et al.
patent: 4265569 (1981-05-01), Gefvert
"Cone Seen Defense Against Ice in Arctic", Oil and Gas Journal, Apr. 27, 1970.
Gulf Canada Limited
Husar Cornelius J.
Saunders R. H.
Stodola Nancy J.
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