Delog资料的最大隶属度岩性判别方法

A LITHOLOGICAL DISCRIMINATION METHOD USING THE MAXIMUM SUBORDINATE DEGREE METHOD TO DELOG DATA

本文以井为中介，用量化的方法建立波阻抗与岩性之间的联系，用概率统计的方法按最大隶属原则判别岩性，实现由波阻抗参数向岩性转化。同时采取分层判别的方法，消除非岩性的沉积因素影响，取得较好效果。

A relationship between wave impedence and lithology has been established using a well as the medium by quantitative method.Lithological discrimination is done by using the principle of the maximum subordinate degree of probability theory,realizing the conversion from wave impedence parameter to lithological one.In order to offset the influence of sedimentary factors of non-lithology,zonation discrimination is adopted and thus good results are obtained.