APPARATUS AND METHOD OF LAYING PIPELINE
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United States of America Patent
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Issued Date -
Apr 4, 2013
app pub date -
Feb 11, 2011
filing date -
Feb 11, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus for laying pipeline from a vessel. The vessel has pipelaying equipment including apparatus for fabricating pipeline along a fabrication axis, a stinger pivotable between a deployed configuration and a retracted configuration, and a tower pivotable between a lowered configuration and an elevated configuration. The method includes a) pivoting the stinger away from the deployed configuration and into the retracted configuration when it is desired to attach a module to the pipeline, b) before or after step a) attaching a module to the pipeline. Further, c) lowering the section of pipeline from the tower along the departure axis until the attached module is below the retracted stinger, and d) pivoting the stinger away from the retracted configuration and into the deployed configuration to allow continued laying of fabricated pipeline.
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