砂体分类评价的模糊综合评判

依据模糊综合评判法，分别采用相关分析法和相对值比较法确定了砂体分类的评价标准，用层次分析法确定了因数权重，用函数分段法确定了单因数隶属度，经过多个变换模型的对比分析，选择合适的模型，利用最大隶属原则评价出砂体类属，大芦家地区东营组１３个单砂层砂体分类的实验表明，正判率达９０％以上。

Application of Fuzzy Comprehensive Judge Technique to Sandbody Classification

A method based on fuzzy comprehensive judge technique is developed to classify and evaluate sand bodies. The classification criteria are set through correlation analysis and relative-value comparison, and a staged function is used to determine the grade of membership. By applying the theory of analytic hierarchy process ( AHP), the weights of factors are fixed. After analyzing the results obtained from different fuzzy comprehensive models, a suitable model is chosen and is used for the classification. The method is used to classify sand bodies of 13 single sand beds in the 1st and 2nd members of the Dongying Formation in Dalujia area, with a success rate of more than 90%, which verifies the validity of the method.