A method of operating a floating stationary object
(57) Abstract:The method is designed for operation of floating stationary, mainly oil and gas, facilities, during which possible ice or storm conditions. In ice or storm conditions the object is immersed at a safe depth with reduced buoyancy by tilting and rotating it relative to its point of fastening to the bottom ground of the traction force of the anchor rope. Achieved the safety of the floating object. 1 Il. The method relates to the operation of floating stationary objects, mainly serving the offshore oil and gas fields, during which possible ice or storm conditions.Known a method of operating a floating stationary object, mainly servicing offshore oil and gas fields, including temporary immersion of the object at a safe depth (see RF patent N 2049699, class B 63 B 22/00, 1995).This method is chosen as the closest analogue of the invention.The disadvantage of this method is that it does not provide the security of a floating object under the influence of pack ice.The technical result is drifting pack ice or storm, due to the security of a floating object.It is achieved by the fact that in the method of operation of the floating stationary object, mainly servicing offshore oil and gas fields, including temporary immersion of the object at a safe depth, prior to immersion of the object reduces its positive buoyancy, and the immersion of the object is performed by tilt and rotate relatively to the points of fastening to the bottom ground produced by the pulling force of the anchor rope.The method is illustrated in the drawing, which shows a floating stationary object.Stationary object (oil terminal pumping stations) 1 fixed to the bottom ground anchors 2 and 3. The object 1 is attached hoses 4.The method is as follows.When approaching the object 1 drifting ice or danger of the storm his seal, reduces the positive buoyancy of the receiving water in the tank (to reduce traction) and, choosing a winch rope anchors 3, bury the object at a safe depth ( 50 m).While improving operating conditions release the rope anchors 3 and increase the buoyancy of the object by the removal of water from the qi of the project, primarily serving offshore oil and gas fields, including temporary immersion of the object at a safe depth, characterized in that prior to immersion of the object reduces its positive buoyancy, and the immersion of the object is performed by tilt and rotate relatively to the points of fastening to the bottom ground produced by the pulling force of the anchor rope.
FIELD: shipbuilding; marine structures and underwater systems for single-leg mooring and servicing of ships, mainly tankers.
SUBSTANCE: proposed ship is provided with aft guide member for pipe line made in form of bearing surface secured on load-bearing member, on transom and deck of aft extremity embracing it by bearing surface. Underwater system includes structure secured on sea bottom and made in form of hollow hull with bottom, cover and bulkheads. Hull is provided with guard secured on bottom and provided with screen made from under-bottom fins. This system is assembled by means of ship from which hull of underwater system is lowered to ground base at simultaneous lowering of hose-mooring line by aft guide member followed by connection of bitter end of hose-mooring line.
EFFECT: enhanced efficiency, stability and reliability of system in the course of operation.
16 cl, 13 dwg