Oil well drilling bit

Details Oil well drilling bit Oil well drilling bit

E - Fixed Constructions

21

B

255/74

E21B 10/08 (2006.01)

Patent

CA 1137072

ABSTRACT OF THE INVENTION An oil well drilling bit is disclosed of the type utilizing hard metal inserts in the rolling cutters wherein each row of inserts on each cutter is located thereon in a sinusoidal or varying pattern rather than the strictly circumferential pattern of the prior art.

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