二氧化碳驱多场耦合粗化研究

Multi-physical Upscaling Research for CO_2 Flooding

二氧化碳驱过程是一个动态的多场耦合问题;涉及渗流场、扩散场和化学反应等多物理场。广泛存在的油藏非均质性要求对实际油藏进行粗化,在此过程中,粗化后的单元必须同时满足多物理场的等效替代;而且随着储层物性参数的变换粗化后的参数能进行相应的调整。利用单元测试的方法对二氧化碳混相驱和非混相驱过程中多物理场进行了动态粗化,取得了较好的粗化效果;该方法可以应用于相应的多场耦合粗化数值模拟研究。

CO2flooding process is a dynamic multi-physical process involving seepage field,diffusion field and chemical reaction field etc.The widely existed reservoir heterogeneity requires upscaling for actual reservoir,hence upscaling should not only meet the requirement of multi-physical equivalent substitution,but also consider updating of reservoir physical parameters.A dynamic muti-physical upscaling theory based on mesh unit testing method was put for ward.The results proved to be effective and worth promoting.