Deep draft semi-submersible offshore floating structure
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United States of America Patent
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N/A
Issued Date -
Sep 27, 2007
app pub date -
Mar 21, 2006
filing date -
Mar 21, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A deep draft semi-submersible floating offshore structure. Interconnected buoyant pontoons form a center well. Buoyant columns attached to the pontoons extend upwardly therefrom. A topside structure is supported on the upper end of the columns. A first heave plate is located in the center well of the pontoons. A second heave plate is positioned above the first heave plate between the columns. Risers may be positioned to be received through the heave plates, the pontoons, or a center well in the columns. The columns of the structure are sized to provide an operational draft that is deeper than a typical semi-submersible structure. The arrangement of the structure provides dampened vertical motions, is structurally efficient, has no extendable moving parts, provides better structural integrity, and is construction friendly.
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