Deep draft floaters for water depths up to 10,000 ft.Ĭompliant towers are three-dimensional (3D) steel truss arrangements, which are slender and have a seabed footprint substantially less than an equivalent steel-jacket structure see Fig.Floating production systems for water depths up to 7,000 ft.Tension leg platforms (TLPs) for water depths up to 5,000 ft with the potential for application to 7,000 ft following further development effort.Compliant towers for water depths up to 3,000 ft.
To circumvent this problem for water depths beyond 1,500 ft, the industry has developed concepts that work on the other side of the damaging significant wave energy (i.e., structures that have natural periods of greater than 20 seconds). 9 Flexible risers and steel catenary risers (SCR)įrom an engineering and economic perspective, cost-effective steel-jacket structures are extremely difficult, if not impossible, to design beyond 1,500 ft.
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