COILED TUBING MODULE FOR RISERLESS SUBSEA WELL INTERVENTION SYSTEM
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United States of America Patent
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Issued Date -
Aug 2, 2012
app pub date -
Feb 1, 2011
filing date -
Feb 1, 2011
priority date (Note) -
Abandoned
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Abstract
A method for riserless intervention of a subsea well includes connecting an intervention assembly to a bottom hole assembly (BHA). The BHA is connected to coiled tubing. The method further includes lowering the intervention assembly to a blowout preventer (BOP) fastened to a subsea production tree using an injector of a support vessel engaged with the coiled tubing; fastening the intervention assembly to the BOP; slacking the coiled tubing using the vessel injector; engaging a stripper of the intervention assembly with the coiled tubing; and driving the BHA through the tree and into a wellbore using a subsea injector of the intervention assembly while synchronizing both injectors to maintain the slack in the coiled tubing.
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