Ice worthy jack-up drilling unit with pre-loading tension system
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United States of America Patent
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Oct 7, 2014
Issued Date -
N/A
app pub date -
Oct 21, 2011
filing date -
Oct 21, 2010
priority date (Note) -
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Abstract
A jack-up rig while in open water operates with the hull jacked up out of the water. However, in the event of ice conditions, the legs are held in place by cans embedded in the sea floor to resist lateral movement of the rig and the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with an ice-bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration.
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