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.
Type:
Application
Filed:
September 20, 2013
Publication date:
January 23, 2014
Applicant:
US SYNTHETHIC CORPORATION
Inventors:
Craig H. Cooley, Timothy N. Sexton, S. Barrett Peterson, Jeffrey Lund, Christopher F. Johnson
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.
Type:
Application
Filed:
June 4, 2012
Publication date:
September 20, 2012
Applicant:
US SYNTHETHIC CORPORATION
Inventors:
Craig H. Cooley, Timothy N. Sexton, S. Barrett Peterson, Jeffrey Lund, Christopher F. Johnson