岩性油气藏储层预测与评价技术及其应用

Some techniques of reservoir prediction and evaluation for lithologic deposits and their applications

针对岩性油气藏储层预测与评价所面临的问题,提出了岩性油气藏储层预测与评价的技术思路和配套技术,主要分4个层次:①基于层序地层学分析的小层对比及构造解释作为基础研究工作;②基于地震属性提取的岩性油气藏定性识别技术;③基于地震波阻抗反演及拟测井参数反演的岩性油气藏定量(静态)评价技术;④基于多井拟测井参数反演的岩性油气藏定量(动态)评价技术。岩性油气藏储层预测与评价技术应用于准噶尔盆地SN31岩性油气藏勘探和开发,取得了很好的应用效果。

In terms of the problems in reservoir prediction and evaluation for lithologic deposits, a series of techniques are presented for reservoir prediction and evaluation of lithologic deposits in this paper, which consist of four levels： （1） smallthickness bed correlation and structure interpretation based on an analysis of sequence stratigraphy, which serve as a basic work; （2） a qualitative identification technique of lithologic deposits based on seismic attributes; （3） a quantitative static evaluation technique of lithologic deposits based on seismic impedance inversion and pseudo-log parameter inversion; （4） a quantitative dynamic evaluation technique of lithologic deposits based on pseudolog parameter inversion in multiple wells. These techniques have been applied in exploration and development of SN31 lithologic deposit in Junggar basin, and have made good results.