Invention Grant
- Patent Title: Drill bits, rotatable cutting structures, cutting structures having adjustable rotational resistance, and related methods
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Application No.: US15060991Application Date: 2016-03-04
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Publication No.: US10196859B2Publication Date: 2019-02-05
- Inventor: David A. Stockey , Reed W. Spencer
- Applicant: Baker Hughes Incorporated
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Traskbritt
- Main IPC: E21B10/08
- IPC: E21B10/08 ; E21B10/14 ; E21B3/00 ; E21B7/06 ; E21B10/567 ; E21B3/04 ; E21B44/00 ; E21B47/00

Abstract:
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.
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