Method for the offshore installation of a preheated double-walled underwater pipe for transporting fluids
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United States of America
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Apr 27, 2021
Grant Date -
Jan 30, 2020
app pub date -
Sep 28, 2017
filing date -
Sep 28, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A method of installing at sea a double-walled preheated undersea pipe for transporting fluids, wherein for each new pipe section to be assembled to a pipe that is already installed at sea: the method involves preheating the inner wall unit element inside the outer wall unit element of the new pipe section; assembling the inner wall unit elements of the new pipe section to the inner wall of the pipe that is already installed at sea; assembling the outer wall unit element of the new pipe section to the outer wall of the pipe that is already installed at sea; lowering the new pipe section into the sea; and repeating the above for other new pipe sections to be assembled so as to prestress the pipe while it is being installed at sea.
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