A standpipe self-tensioning underwater production support buoy and its installation and recovery method
A technology of buoys and risers, applied in the field of underwater production support buoys and their installation and recovery, can solve the stress change of the main body of the rigid riser, the increase of the tension force at the top of the rigid riser, the unfavorable rigid riser strength and fatigue resistance Performance and other issues to achieve the effect of improving strength and fatigue performance, reducing force and range of motion
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[0063] The self-tensioning underwater production support buoy in the present invention will be further described below in conjunction with the accompanying drawings. The illustration of the present invention takes a self-tensioning underwater production support buoy in an ultra-deep water offshore oil and gas engineering development system with five rigid risers as an example.
[0064] Such as Figure 1-7 As shown, a standpipe self-tensioning underwater production support buoy includes an outer buoy 1 and an inner buoy 6, and the outer buoy 1 is nested with a plurality of inner buoys 6;
[0065] The main body of the outer buoy 1 is a cylindrical structure, the lower edge of the outer wall of the outer buoy 1 is connected to four cantilever buoys 2, and the four cantilever buoys 2 are uniformly distributed along the circumference in a radial shape. The ends of the cantilever buoys 2 adopt a truss structure 15, and The outer end of the structure 15 is connected to the mooring c...
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