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Methods for the dynamic shut-in of a subsea mudlift drilling system
(United States. Patent and Trademark Office, 2002-05-28)
A method for a dynamic shut-in of a subsea mudlift drilling system. The method comprises detecting a kick, isolating a wellbore, and adjusting a subsea mudlift pump and a surface mud pump to provide a selected wellbore ...
Method for detecting a leak in a drill string valve
(United States. Patent and Trademark Office, 2002-12-31)
A method for detecting a leak in a drill string valve used when drilling a subsea well. The method comprises measuring a first inlet pressure at a subsea mudlift pump while a subsea mudlift pump and a surface pump are ...
Method for controlling a well in a subsea mudlift drilling system
(United States. Patent and Trademark Office, 2002-11-05)
A method for controlling a subsea well that includes shutting at least one blowout preventer, opening at least one isolation line, and circulating an influx out of a well while an inlet pressure of a subsea mudlift pump ...