Invention Grant
- Patent Title: Specialized bit for challenging drilling environments
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Application No.: US14231834Application Date: 2014-04-01
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Publication No.: US09644429B2Publication Date: 2017-05-09
- Inventor: Graham Mensa-Wilmot
- Applicant: Graham Mensa-Wilmot
- Applicant Address: US CA San Ramon
- Assignee: Chevron U.S.A. Inc.
- Current Assignee: Chevron U.S.A. Inc.
- Current Assignee Address: US CA San Ramon
- Agent Parul P. Anderson
- Main IPC: E21B10/43
- IPC: E21B10/43 ; E21B10/55 ; E21B10/567 ; E21B10/42

Abstract:
The present disclosure provides a drill bit having cutters of different geometries, such as the combination of round cutters and scribe cutters. The drill bit includes at least one radial location at which both a round cutter and a scribe cutter are disposed. Thus, the drill bit leverages the high cutting efficiency of the scribe cutter as well as the high impact resistance of the round cutter. Additionally, the round cutter and the scribe cutter have the same maximum distance from the drill bit. Thus, the round cutter and the scribe cutter which share the same radial location contact the rock formation at substantially the same time when used in a drilling operation.
Public/Granted literature
- US20150275584A1 SPECIALIZED BIT FOR CHALLENGING DRILLING ENVIRONMENTS Public/Granted day:2015-10-01
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