Invention Application
US20110198128A1 EARTH-BORING TOOLS INCLUDING ABRASIVE CUTTING STRUCTURES AND RELATED METHODS 有权
包括磨料切割结构的地下工具及相关方法

EARTH-BORING TOOLS INCLUDING ABRASIVE CUTTING STRUCTURES AND RELATED METHODS
Abstract:
A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components, as well as cement. Methods of forming earth-boring tools include disposing at least one abrasive cutting structure or element on the earth-boring tool. Methods of drilling with earth-boring tools including drilling with at least one abrasive cutting structure or element.
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