An Analytic Hierarchy Process for Bit Optimization Based on the Fractal Crushing Work Ratio

LIU Shanshan, YAN Tie, BI Xueliang, YU Xiaowen, XU Haisu, ZHANG Yuenan


The paper presents a new method of bit optimization by applying index scale AHP (Analytic Hierarchy Process). It constructs judgment matrix based on the complete consistency principle. For the matrix has the consistency of the importance and transitivity, it simplifies the process of calculation by cancelling the consistency checking process, which is used in the traditional AHP. The adjacent important ratio is selected by combining hierarchical thought and fractal dimension, and the effect of adjacent important ratio disturbance on the optimization result is reduced. The accuracy of the decision result of bit optimization hierarchical structure model is ensured effectively, and the stability and flexibility of the model is enhanced. The model can be applied in different regions based on actual needs, and to solve optimization problems of different types of drill bit.
Key words: Crushing work ratio; Index scale; Bit optimization


Crushing work ratio; Index scale; Bit optimization

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