Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Douglas Lawrence Rock0
Date of Patent
August 11, 2009
0Patent Application Number
118763710
Date Filed
October 22, 2007
0Patent Primary Examiner
Patent abstract
A method to drill a borehole includes drilling the borehole through an overburden with a drill bit selected to optimize a drilling performance parameter and drilling the borehole through a production zone with another drill bit selected to optimize a production performance parameter.
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