Spud bushing system for mobile offshore arctic drilling structur

Details Spud bushing system for mobile offshore arctic drilling structur Spud bushing system for mobile offshore arctic drilling structur

1985-02-22

1986-06-24

Corbin, David H.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

405217, E02B 1702

Patent

active

045964955

ABSTRACT:
A spud bushing system for a mobile offshore arctic drilling structure that permits removal of a spud bushing in a controllable manner even under load. The spud bushing system is characterized by a bushing seat fixed in the structure, an annular bushing surrounding the spud and operative when seated in the bushing seat to support laterally the spud while permitting relative vertical movement therebetween, and plural hydraulic actuators arranged about the periphery of the bushing seat and operable to effect seating and controlled unseating of the bushing.

REFERENCES:
patent: 3645565 (1972-02-01), Houot et al.
patent: 3675713 (1972-07-01), Watkins
patent: 4167279 (1979-09-01), Lucksinger
patent: 4497592 (1985-02-01), Lawson
patent: 4497594 (1985-02-01), Fern

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