Method of drilling a bore hole

Details Method of drilling a bore hole Method of drilling a bore hole

E - Fixed Constructions

21

B

E21B 7/00 (2006.01) E21B 7/08 (2006.01) E21B 43/30 (2006.01) E21B 44/00 (2006.01)

Patent

CA 2396291

A method is disclosed for drilling a borehole through a production zone underlying an overburden of various earth formations. The method includes drilling the borehole through the overburden with at least one drill bit adapted to optimize at least one drilling performance parameter, and then drilling the borehole through at least part of the production zone with at least one drill bit adapted to optimize at least one production performance parameter.

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