中高渗透砂岩储层地质建模应注意的几个问题

Issues should be noticed of geologic modeling in middle-high permeability sandstone reservoir

针对中高渗透砂岩储层地质建模中应注意的几个常见问题进行了探讨,提出了通过储层反演、结合沉积规律以及参照常规地震剖面等方法,合理确定砂体边界。针对多方向展布单一砂体或大范围内不同展布方向的多个砂体,在属性参数随机建模中确定变差函数的主变程方向时,应采取在平面上用"流线趋势"作协约束条件、将沉积微相作为主要控制条件的处理方法。对于分布稳定的夹层,建模时可以把夹层作为分层来处理,分布不稳定的夹层适于采用随机建模方法。平面网格粗化建议分为油区内部、油水过渡带和油区外部3部分进行不同程度的合理粗化。应从基础数据和建模的几个关键环节加强模型的质量控制。

Several familiar issues of geologic modeling in middle-high permeabilitysandstone reservoir were discussed.The sand body boundary can be confirmed by some methods of reservoir inversion,sedimentary regularity,regular seismic section and so on.In view of a single sand body with several directions distribution or several sand bodies with different directions distribution in large scale,"flow trend" in plane as co-constraints and sedimentary microfacies as the main controlled condition were the main processing...