MARINE ICE-RESISTANT ADJUSTABLE PLATFORM MOUNTING SYSTEM AND METHOD FOR PLATFORM TRANSPORTATION AND MOUNTING BY MEANS OF MOUNTING SYSTEM

摘要

FIELD: continental shelf development, particularly artificial islands mounted on piles or like supports.;SUBSTANCE: mounting system comprises two floating crafts, platform transportation pontoon arranged in-between, platform-bearing pile foundation, platform handling piles having parts movable in vertical direction and fixing stops. Platform transportation pontoon includes tow boat arranged in pontoon area so that tow boat immersion provides system usage in low water. Platform mounting method involves installing platform handling piles provided with movable parts sliding in vertical direction and fixing stops at base; moving pile transportation pontoon with platform installed thereon in space between platform handling piles and installing the pontoon between the platform handling piles; fastening moving parts of platform handling piles to platform bottom; discharging ballast from pile transportation pontoon to lift the platform over water surface and connecting movable parts of platform handling piles to platform handling piles by means of fixing stops; filling pile transportation pontoon with ballast to immerse thereof in water; removing ballast from pile transportation pontoon to lift the platform through height necessary for following platform loading on floating crafts; retracting pile transportation pontoon from platform; moving floating crafts to platform; transferring platform from platform handling piles to floating crafts; securing platform to floating crafts and moving platform to well drilling site; transferring platform to previously arranged pile foundation.;EFFECT: increased manufacturability and reliability, decreased labor inputs and extended operational capabilities due to provision of system operation in ice and in low water.;4 cl, 9 dwg