半参数方法在测井解释中的应用

储层固有的随机性和复杂性不仅给测井解释工作带来困难，也降低了井参数的可靠性。储层岩性，物性，含油性及其结构，决定了测井响应特征及测井参数的数学分布。经实际资料验证，解释符合率达８２．６％，满足了油田开发的需求。

Application of Semi-parametric Method to Log Interpretation

The inherent randomness and complexity of reservoir make logging interpretation difficult and also decrease the reliability of logging parameters. Lithology, physical properties, oilbearing condition and the structure of reservoir determine the log response features and mathematical distribution of logging parameters. Based on the distribution characteristics of logging parameters, this paper points out the irrationality and the practical defect of the commonly used parametric modeling. It describes the concept of nonparametric modeling and gives the semiparametric model of fluid identification. Application result proves that the interpretation coincidence rate reaches 826%, which meets the demand of oil field development.