Method for the assisted installation of an underwater riser
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United States of America Patent
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Dec 22, 2015
Grant Date -
Feb 6, 2014
app pub date -
Mar 15, 2012
filing date -
Mar 23, 2011
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Abstract
A method for installing an underwater riser between a seabed (52) and a surface (12), and a tubular pipe suspended from a float (24): The float (24) is weighted to be able to submerge it to drive one pipe end (28) toward the seabed (52) for connecting the tubular pipe at the seabed. Unwinding the flexible pipe (20) to extend it catenary fashion between the float (24) and a surface installation (10) so as to weight the float (24) with the unwound flexible pipe (20) and cause the submersion of the float (24), whereby the other pipe end (28) is driven toward the seabed (52).
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