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针对目前国内钻头选型存在的问题，提出了利用灰关联聚类分析方法进行地层综合特性分级，根据地层分级结果进一步优选出钻头类型。通过在新疆南缘地区的应用，取得令人满意的效果。实践证明该方法的使用能为钻头合理选型提供更科学的依据。
In view of the problems existing in the current bit selection in China, the method of gray relational clustering analysis is proposed to classify the stratigraphic comprehensive characteristics, and the bit type is further optimized according to the stratum grading results. Through the application in the southern margin of Xinjiang, and achieved satisfactory results. Practice has proved that the use of this method can provide a more scientific basis for the rational selection of drill bits.