On-board fabrication of pipe-in-pipe assemblies
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United States of America
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Mar 8, 2022
Grant Date -
Mar 18, 2021
app pub date -
Dec 10, 2018
filing date -
Dec 10, 2018
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Abstract
A pipelay vessel having two pipe string manufacturing lines and a firing line, wherein the pipe string manufacturing lines are designed for simultaneously handling two different pipe outer diameters for use as an inner pipe and an outer pipe respectively. Further, the vessel has a pipe-in-pipe assembly workstation for assembling the inner pipe and the outer pipe in a pipe-in-pipe configuration. The vessel is designed with a lay-out which allows for producing offshore pipe-in-pipe strings from single joints, wherein available space is optimally used and pipe-in-pipe strings can be produced safely offshore.
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