Method for laying a pipeline on the seabed and a pipeline installation device
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United States of America Patent
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Feb 10, 2015
Grant Date -
Sep 6, 2012
app pub date -
Jul 22, 2010
filing date -
Jul 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention regards a method for laying pipelines on the seabed comprising the steps of attaching an end (2) of the pipeline (1) to a structure (10, 20), lowering the structure with the pipeline to the seabed, allowing the pipeline end to pivot relative the structure, measuring the inclination of the pipeline end relative to the seabed, modifying a pipe spool such that one end is given the same inclination of the end as the pipeline and that at least one part of the pipe spool will be resting on the seabed after connection, connecting the pipe spool to the pipeline. The invention also regards a pipeline installation device where at least a one side of a top structure is allowed to move relative a foundation structure.
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