Offshore rig with blowout preventer milling assembly
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United States of America Patent
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Dec 1, 2015
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app pub date -
Mar 17, 2015
filing date -
Oct 3, 2014
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Abstract
An offshore rig for production or drilling of hydrocarbons from a wellbore at sea utilizes a blowout preventer milling assembly. The offshore rig is used for milling gasket surfaces of a blowout preventer at sea either using a portable controller on the offshore rig or a client device remote to the offshore rig. The client device is connected to the portable controller via a network to control the movement of a pneumatic spindle. The pneumatic spindle mills the gasket surface of the blowout preventer. During the milling, the blowout preventer is still attached to the casing or tubulars over the well location.
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