- 专利标题: EARTH BORING TOOLS HAVING FIXED BLADES AND ROTATABLE CUTTING STRUCTURES AND RELATED METHODS
-
申请号: US15691219申请日: 2017-08-30
-
公开(公告)号: US20190063159A1公开(公告)日: 2019-02-28
- 发明人: William Schoen
- 申请人: Baker Hughes, a GE company, LLC
- 主分类号: E21B10/43
- IPC分类号: E21B10/43 ; E21B10/14 ; E21B10/16 ; E21B10/48
摘要:
An earth-boring tool may include a body and at least one rotatable cutting structure assembly. The rotatable cutting structure assembly may include a leg, a rotatable cutting structure rotatably coupled to the leg, and a resistance actuator configured to impose rotational resistance on the rotatable cutting structure relative to the leg. An earth-boring to may include a plurality of rotatable cutting structure assemblies coupled to the bit body and a plurality of blades coupled to the body. A method of drilling a borehole may include rotating an earth-boring tool within the borehole, causing rotational resistance to be imposed on at least one rotatable cutting structure of the earth-boring tool, causing a blade of the earth-boring tool to be pushed into a sidewall of the borehole, and side cutting the sidewall of the borehole with the blade.
公开/授权文献
信息查询