Patent ID: 8733266

Claim:
An integrative deep draft floating production platform with unconditional stability, comprising: a ring ballast tank at a bottom, small-cross-section columns on the ring ballast tank, a middle ring buoyancy tank with a same or a similar shape as the ring ballast tank, large-cross-section columns with a same number as the small-cross-section columns and located on the middle ring buoyancy tank, and a drilling rig and an oil gas processing module on a top of the large-cross-section columns; wherein the ring ballast tank adopts a permanently fixed ballast, and the ring ballast tank is internally filled with weights to ensure that a center of buoyancy of the integrative deep draft floating production platform is higher than a center of gravity; wherein the large-cross-section columns are uniformly arranged on the middle ring buoyancy tank and lower parts thereof are integrated with the middle ring buoyancy tank; each of the large-cross-section column is provided with a central pore canal axially, wherein a lower part in the central pore canal is provided with a chopping board connection structure with a groove; corresponding to the large-cross-section columns, the small-cross-section columns are uniformly arranged on the ring ballast tank and lower parts thereof are integrated with the ring ballast tank; the small-cross-section columns insertable into and through the central pore canal of the large-cross-section columns correspondingly after a construction of the integrative deep draft floating production platform is completed, and the small-cross-section columns are integrated with the large-cross-section columns via wedges, bolts, or pins while the integrative deep draft floating production platform is in a folded state; each of the small-cross-section columns provided with a reverse-cone structure on a top; each of the large-cross-section columns provided with a group of mooring lines which are connected to an anchor on a seabed via a mooring device; and the drilling rig and the oil gas processing module are installed at a construction site, and the integrative deep draft floating production platform is transportable to an installation site by a dry tow or a wet tow as a whole to then be installed.