Conductor casing installation by anchor handling/tug/supply vessel
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United States of America Patent
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Aug 10, 2010
Grant Date -
Jan 25, 2007
app pub date -
Jul 19, 2006
filing date -
Jul 20, 2005
priority date (Note) -
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Abstract
An anchor handling/tug/supply (AHTS) vessel is employed to engage conductor casings with the seafloor. The conductor casings initially penetrate the seafloor to a first depth under their own weight. The conductor casings may optimally be further engaged with the seafloor to a second depth by the application of suction to the interiors thereof or by the use of a drop hammer. The conductor casings are driven to grade by a hydraulic pile driving hammer deployed from the deck of the AHTS vessel the previously deployed conductor casings to grade before being recovered to the deck of the AHTS vessel.
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