地震岩性预测新方法探索

由双相介质理论导出的岩石变形能由孔隙变形能和骨架变形能两部分组成，这两个分量反演的地震孔隙率和岩石地震应力从不同角度反映地层的结构和骨架弹性性质。用三角形的图板表示这两种参数组合与井资料所对应的岩性时，反映出岩性分区规律，可区分不同岩石类型。利用该图板进行岩性预测，在实际应用中见到了很好的地质效果，为岩性 气藏预测提供了 手段，为地震岩性学研究开拓了新的内容。

A new method for seismic lithologic prediction

The rock strain energy derived from two-phase medium theory consists of pore strain energy and frame straln energy. The seismic porosity and rock seismic stress which are obtained from inversion of the two energy components reflect stratigraphic structure and frame elastic characteristic in different aspects. In triangular template representation, the two kinds of parameters and some lithologic lines obtained by analysing log data indicate regular lithologic distributions, which shows us different rock types. Lithology prediction using such a template brings very good geological effect in practical application, offers a new means for predicting some lithologic hydrocarbon reservoir and adds new contents to seismic lithology study.