一、前言钻探一直是地质勘探中的一种手段。最初,由于深部岩矿层是地质工作者不能直接观察的,他们便利用钻探来提供地层深处的岩样,从而得到原始资料。大量的岩心一直用来作为一种特殊的露头,也一直用来鉴定 First, the foreword Drilling has been a means of geological exploration. Initially, since the deep rock formations were not directly observed by the geologists, they used drilling to provide rock samples in the depths of the formation to obtain the raw data. A large number of cores have been used as a special outcrop and have long been used to identify