METHOD OF FLOATING DRILLING RIG MOVEMENT BY MEANS OF TRANSPORT HOVERSHIP SYSTEM Russian patent published in 2014 - IPC E02B17/00 B63B21/56 B63B35/44 

FIELD: transport.

SUBSTANCE: method of drilling rig movement by means of transport hovership system includes movement over shallow waters and pulling floating drilling rig on air-cushion on slightly sloping shore. For movement over shallow waters delta anchors installed on ground using transport hovership equipment. To bring floating drilling rig on slightly sloping shore a bundle of three screw anchors is used which are screwed into ground by drilling rig located on deck of transport hovership. These anchors are joined with platform with roller block by adjustable rods. Pull winches and roller blocks are used on floating drilling rig to exit to shore. Roller block on anchor bundle platform and in floating drilling rig together with pull winch form tackle which permits to use winches with lower propulsive force for floating drilling rig pulling on anchors.

EFFECT: lower energy consumption during floating drilling rig movement over shallow waters and its pulling out to solid base with insignificant slope.

3 dwg