Riser displacement and cleaning systems and methods of use
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United States of America Patent
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Mar 15, 2016
Grant Date -
Apr 30, 2015
app pub date -
Aug 28, 2012
filing date -
Aug 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed are systems and methods of effectively wiping and displacing a deep water riser prior to disconnection from a blowout preventer. An exemplary riser displacement system includes a mandrel coupled to a work string, a seal containment canister arranged about at least a portion of the mandrel, and a seal assembly movable between an un-deployed configuration, where the seal assembly is arranged within the seal containment canister, and a deployed configuration, where the seal assembly is arranged outside of the seal containment canister, the seal assembly including a sleeve movably arranged about the mandrel and one or more sealing elements disposed at a distal end of the sleeve.
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