A method for drilling with a buoyant structure having a hull, a planar keel defining a lower hull diameter, a lower cylindrical portion connected to the planar keel, a lower frustoconical portion disposed above the lower cylindrical portion with inwardly-sloping wall at a first angle, an upper frustoconical portion directly connected to the lower frustoconical portion. The method uses a ballasted chambered buoyant storage ring which is either dockside and connected to the buoyant structure for drilling at a subsea location, or the ballasted chambered buoyant storage ring is preinstalled at a subsea location and then the buoyant structure is mounted to the ballasted chambered buoyant storage ring at sea.
Method for drilling with a buoyant structure for petroleum drilling, production, storage and offloading
2016-03-29
Patent
Electronic Resource
English
Buoyant structure for petroleum drilling, production, storage and offloading
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