发明申请
US20120018225A1 TILTED BIT ROTARY STEERABLE DRILLING SYSTEM 有权
倾斜钻头旋转可转向钻机系统

TILTED BIT ROTARY STEERABLE DRILLING SYSTEM
摘要:
A wellbore is formed by using an apparatus that may include a shaft having an end portion, a drill bit body tiltable about the end portion, and at least one actuator configured to apply a tilting force to the drill bit body.
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