Two-cone drill bit with enhanced stability

Details Two-cone drill bit with enhanced stability Two-cone drill bit with enhanced stability

E - Fixed Constructions

21

B

E21B 10/08 (2006.01)

Patent

CA 2517761

A two-cone drill bit that exhibits improved stability. In one embodiment, the two-cone drill bit has a first and a second roller cone arranged to have a cone separation angle between about 145 degrees and about 166 degrees. In some embodiments, the two-cone drill bit has a plurality of cutting elements arranged on the roller cones such that a bottom hole coverage greater than about 17 percent is achieved per revolution of the two-cone drill bit.

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