Spud bushing system for mobile offshore arctic drilling structure

摘要

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.