公开(公告)号：US09382762B2

公开(公告)日：2016-07-05

申请号：US14561031

申请日：2014-12-04

Applicant: US SYNTHETIC CORPORATION

Inventor： Craig H. Cooley ,  Timothy N. Sexton ,  S. Barrett Peterson ,  Jeffrey Lund ,  Christopher F. Johnson

IPC: E21B10/42 ,  E21B10/55 ,  B23B27/12 ,  E21B10/567 ,  E21B10/62 ,  E21B10/08 ,  E21B10/54

CPC classification number: E21B10/42 ,  B23B27/12 ,  E21B10/08 ,  E21B10/55 ,  E21B10/567 ,  E21B10/62 ,  E21B2010/545

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.

公开(公告)号：US20150152688A1

公开(公告)日：2015-06-04

申请号：US14561031

申请日：2014-12-04

Applicant: US SYNTHETIC CORPORATION

Inventor： Craig H. Cooley ,  Timothy N. Sexton ,  S. Barrett Peterson ,  Jeffrey Lund ,  Christopher F. Johnson

IPC: E21B10/42 ,  E21B10/55

CPC classification number: E21B10/42 ,  B23B27/12 ,  E21B10/08 ,  E21B10/55 ,  E21B10/567 ,  E21B10/62 ,  E21B2010/545

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.

Abstract translation: 地下钻井系统可以包括钻柱和连接到钻柱的旋转钻头。 旋转钻头可以包括钻头体和联接到钻头体的切割元件，其中切割元件构造成响应于施加到切割元件的扭矩而旋转。 该系统还可以包括联接到钻柱的凸轮组件，与凸轮组件的凸轮表面接触的凸轮从动件组件和联接到凸轮从动件组件的扭矩施加结构。 扭矩施加结构可以被配置为响应于凸轮组件和凸轮从动件组件之间的相对旋转而向切割元件施加扭矩。