Invention Grant
US08210285B2 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element 有权
切割元件装置,包括其的钻头,切割方法以及旋转切割元件的方法

Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element
Abstract:
A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response to torque applied to the cutting element. The system also may include a cam assembly coupled to the drill string, a cam follower assembly in contact with a cam surface of the cam assembly, and a torque-applying structure coupled to the cam follower assembly. The torque-applying structure may be configured to apply torque to the cutting element in response to relative rotation between the cam assembly and the cam follower assembly.
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