Method of laying lined pipeline
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United States of America Patent
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Apr 30, 2019
Grant Date -
Mar 15, 2018
app pub date -
Feb 29, 2016
filing date -
Mar 20, 2015
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Abstract
A method lays lined pipeline which actively and successfully removes air pockets which might be trapped in the annulus between the liner and the host pipe by progressively flooding the lined pipeline. Further, the liner is brought into closer contact and engagement with the host pipe. The removal of air in the annulus enables the pipeline test pressure to stabilize more quickly and avoids the risk of potential collapse during operational service life in the event the pipeline pressures fluctuate or a vacuum is created during an emergency shutdown.
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