发明授权
US07798255B2 Drill bits having optimized cutting element counts for reduced tracking and/or increased drilling performance 有权
钻头具有优化的切削元件数量,以减少跟踪和/或增加钻井性能

Drill bits having optimized cutting element counts for reduced tracking and/or increased drilling performance
摘要:
A roller cone drill bit for drilling earth formation includes rows arranged on each of the cones such that, when viewed in routed profile, cutting element profiles partially overlap other cutting element profiles. The roller cone drill bit having at least a first three interior rows adjacent a gage row, each have a cutting element count selected from the group of 16, 18, 21 and 26 cutting elements.
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