Deepwater disconnectable turret system with improved riser configuration
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United States of America Patent
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Oct 24, 2017
Grant Date -
Jun 2, 2016
app pub date -
Apr 28, 2014
filing date -
May 6, 2013
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Abstract
A system for transporting hydrocarbons from reserves located under the sea floor to a turret connected to a hydrocarbon production vessel floating at the sea surface, the hydrocarbons being transferred through at least one rigid catenary riser extending from the sea floor to a buoy, the system for transporting hydrocarbons includes an upper section of the at least one substantially rigid riser directly attached to the buoy and provided with fairings, a middle section of the rigid riser is provided with buoyancy modules so to give it a lazy wave shape and a lower section of the substantially rigid riser is in contact with the seafloor at a distance X from the buoy vertical axis that is smaller than a distance Y between the buoy vertical axis and the mooring lines anchoring elements.
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