Method and system for laying a submarine pipeline

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United States of America Patent

PATENT NO 11549614
APP PUB NO 20200109797A1
SERIAL NO

16614590

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Abstract

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A method of laying an off-shore pipeline (1) comprises: —installing on the seabed (3) a fixed receiving structure (4) having a redirecting device (5), —paying-out from a laying vessel (7) a pipeline (1) with the pipeline end termination device (9) vertically towards the seabed (3), —extending a damping cable (6) from the pipeline end termination device (9) through the redirecting device (5) to an underwater damping buoy (14), —connecting an underwater suspension buoy (15) to the pipeline end termination device (9), —inclining the pipeline (1) from a vertical orientation towards the horizontal orientation, using: —the suspension buoy (14) to counterbalance at least part of the weight of the pipeline end termination device (9), —the damping buoy (14) for damping the pipeline (1).

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Patent Owner(s)

Patent OwnerAddress
SAIPEM S P AVIA MARTIRI DI CEFALONIA 67 20097 SAN DONATO MILANESE (MI) ITALY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Conti, Flavio Milan, IT 1 2
Forestali, Diego Milan, IT 1 2

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