Method for retrieving riser for storm evacuation
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United States of America Patent
Stats
-
Nov 18, 2008
Grant Date -
Nov 15, 2007
app pub date -
May 9, 2006
filing date -
May 9, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for preparing to move a floating structure away from a wellbore drilled below the bottom of a body of water includes filling a riser extending from the bottom of the body of water to the floating structure with water. The water in the riser is displaced to a selected first depth below the water surface. The riser is sealed at a second selected depth shallower than the first selected depth. The portion of the riser above the second selected depth is withdrawn onto the floating structure.
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