semi-submersible dry and punch christmas tree production unit

摘要

semi-submersible dry christmas tree production and drilling unit. A semi-submersible deep draft production and drilling rig unit with dry Christmas trees is described. the platform unit preferably comprises four columns, a ring pontoon, a two-axis symmetrical hull with draft in the range of 3048 cm and 4724.4 cm (100 to 155 ft), upwardly tensioned top tubes with thrust and spring tensioners. preferred combined vertical stiffness tensile or tensile tensors of 10% to 30% rigidity of the platform water plane, an oil extraction area with a well space in the range of 365.76 cm and 548.64 (12 ft. and 18 feet), a pontoon-supported or high-level upright guide system, deck installations supported by a type of deck frame box, mooring lines and overhead catenary tubes.