Rolling cone drill bit having non-uniform legs

Details Rolling cone drill bit having non-uniform legs Rolling cone drill bit having non-uniform legs

E - Fixed Constructions

21

B

E21B 10/08 (2006.01)

Patent

CA 2571062

A drill bit for drilling through earthen formations. In an embodiment, the drill bit comprises a bit body having a bit axis. In addition, the drill bit comprises a first rolling cone cutter mounted on the bit body at a first journal angle and adapted for rotation about a first cone axis. Further, the drill bit comprises a second rolling cone cutter mounted on the bit body at a second journal angle and adapted for rotation about a second cone axis, wherein the second journal angle differs from the first journal angle.

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