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In the course of drilling, the drill is the main tool for breaking rock, and the borehole is formed by breaking the rock with a bit. The length of time used in the formation of a wellbore is related to the degree of match between the bit and the stratum, in addition to the characteristics of the rock being drilled and the performance of the bit itself. The reasonable selection of drill bits plays an important role in improving drilling speed and reducing the comprehensive cost of drilling.