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Apparatus and method for adding buoyancy to riser with inflatable floatation collar
Apparatus and method for adding buoyancy to riser with inflatable floatation collar
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机译:用充气式浮环给立管增加浮力的装置和方法
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摘要
A drilling unit comprises a floating drilling rig, a subsea wellhead, and a riser connecting the subsea drilling rig with the subsea wellhead. A floatation collar encircles the riser so as to reduce deck load on the floating drilling rig. The floatation collar comprises a hollow fabric body filled with gas. The floatation collar has a longitudinal axia and is formed from a sidewall body having a longitudinally extending slit extending through the sidewall body. The slit enables the floatation collar to be transversely mounted onto the marine riser.
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