Riser support for floating offshore structure
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United States of America Patent
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Mar 30, 2004
Issued Date -
N/A
app pub date -
Feb 6, 2002
filing date -
Dec 7, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A floating offshore platform configuration is provided, which decouples pitch, roll, and heave motions from acting on tensioned risers and accommodates the angular displacement induced by floating offshore platform surge and/or sway excursion without inducing bending in the riser at its entrance to the floating offshore platform. The risers are guided by an inner structure that is tethered from the sea floor and centered inside an outer hull structure. Outer hull structure heave, pitch and roll motions are substantially isolated from acting on the inner structure through a connection mechanism, and each riser is allowed to individually expand or contract.
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