SELF-MOVING DRILLING SHIP FOR OPERATION IN ARCTIC CONDITIONS Russian patent published in 2014 - IPC B63B35/44 E21B43/01 B63B21/50 

FIELD: transport.

SUBSTANCE: self-moving drilling ship has hull made capable to rotate relative to turret mounted in it with vessel mooring system, deck, accommodations, drilling well under turret, technological drilling facilities and drilling rig with drill string passing through turret and well placed on the main deck, propelling-steering complex, power plant located in the hull. Drilling rig with underrig space, technological drilling facilities, deck walkways and accommodations of vessel are winterized - protected against adverse environmental conditions by safety cages with heating system. Around lower part of drilling well, ring-shaped guard is installed to prevent ice entering. Turret, drilling well and drilling rig with drill string are located in fore part relative to midship section, and accommodations are located in aft part of vessel. The vessel is provided with helicopter deck, system for personnel safe emergency vessel escape in icy conditions, as well as with dynamic positioning system.

EFFECT: improved operational characteristics of drilling ship during prospecting and exploratory drilling on arctic shelf.

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