Invention Grant
- Patent Title: Drill bit with hydraulically-activated force application device for controlling depth-of-cut of the drill bit
- Patent Title (中): 钻头采用液压激活力施加装置,用于控制钻头的切削深度
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Application No.: US13561786Application Date: 2012-07-30
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Publication No.: US09103175B2Publication Date: 2015-08-11
- Inventor: Thorsten Schwefe
- Applicant: Thorsten Schwefe
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Cantor Colburn LLP
- Main IPC: E21B10/62
- IPC: E21B10/62 ; E21B7/06 ; E21B10/43

Abstract:
A drill bit includes a pad configured to extend and retract from a surface of the drill bit. A force application device extends and retracts the pad. The force application device includes a hydraulically-operated rotating member coupled to a speed reduction device configured to apply a force on drive unit that applies a force on the pad to cause the pad to extend from the drill bit face.
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