New approaches hold promise for overcoming drilling barriers

Guntis MoritisProduction EditorPresentations at the 2003 Offshore Technology Conference in Houston stressed the need for offshore drillers to move away from conventional overbalanced drilling to drilling with tools normally associated with underbalanced drilling.Don Hannegan, Weatherford International Ltd., said these tools may make "economically undrillable wells viable prospects."He said managed pressure drilling (MPD) can overcome some drilling-related barriers commonly encountered in conventional drilling with an overbalanced mud column.Hannegan said that offshore underbalanced drilling has been limited, although the industry has drilled with underbalanced equipment tens of thousands ...

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