date锛?022-05-30
on may 25, cooec successfully completed the disconnection of an internal turret single-point mooring fpso, which was the first operation of its kind in china. the unit disconnected is the 鈥淗ysy116鈥?fpso unit of cnooc, which was put into operation in june 2008. its overall length is 232.5 meters, its breadth is 46 meters, and its maximum crude oil processing capacity is 2.8 million tons per annum.
the 鈥淗ysy116鈥?fpso unit is designed with an inner turret single-point mooring system, posing stringent requirements for fpso unit鈥檚 position limit. during the rising and sliding of the slip ring swivel stack, the angle limit must be controlled precisely within 卤5 degrees, and the deviation of the point slip ring deviation from the design center must be controlled within 卤5 meters. the fpso unit is located in the water of wenchang oilfield cluster with an average water depth of 130 meters and harsh climate conditions, which have caused difficulties for its disconnection.
before the operation was carried out, cooec conducted six rehearsals of the operation through simulation, fully identified the risks associated with the operation, and improved the operation plan. during the offshore operation, the operation team successfully completed several key tasks, such as the lowering of the main hoisting cable and the release of the stp buoy, within13 days, demonstrating cooec鈥檚 professional capability for the disconnection of fpso units.