The compound drilling mechanism of turbodrill is elaborated in detail after analyzing the characteristics of turbodrill and coordination requirements for PDC bits.
从
轮钻具的特性和PDC钻头配合要求着手，详细论述了轮钻具复合钻
的机理；
轮钻具The compound drilling mechanism of turbodrill is elaborated in detail after analyzing the characteristics of turbodrill and coordination requirements for PDC bits.
从轮钻具的特性和PDC钻头配合要求着手，详细论述了轮钻具复合钻的机理；
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