| abstract |
Continuous vertical tubular handling and lifting flotation structures include hull, main deck, upper neck connected to the main deck, upper frustoconical side, middle neck, lower neck extending from the middle neck, elliptical keel, and elliptical keel. It has a fin-like attachment secured to the outer and outer parts of the exterior. The upper frustoconical lateral portion is located below the upper neck and is maintained above the water line for the transport depth of the flotation structure and partially below the waterline for the working depth of the flotation structure. An automated stand building system mounted to the hull is in communication with the controller and configured to construct the marine risers, casings and drilling pipes. |