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US08453767B2 Angular offset PDC cutting structures 失效
角度偏移PDC切割结构

Angular offset PDC cutting structures
摘要:
A drill bit with a drill bit body having a cutting structure face. A pin is formed on the drill bit body for attaching the drill bit body to a drill string. The pin has a first central axis to be aligned with the drill string when attached and the cutting structure face has a second central axis. The second central axis is misaligned relative to the first central axis.
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