油藏数值模拟求解中的IMPIMS方法

IMPIMS IN RESERVOIR NUMERICAL SIMULATION SOLUTION

在油藏数值模拟中对数值模型进行求解,目前基本有两类方法一类是顺序求解法,如IMPES方法和IMPIMS方法;一类是联立求解法,如半隐式法和全隐式法。IMPIMS方法是一种顺序求解方法,是IMPES和半隐式方法的混合变种。它既具有半隐式求解饱和度的特点,又保留了IMPES方法省内存,省计算工作量的优势。

At present there are two methods to carry on the solution to the numerical model in reservoir numerical simulation. One is the order solution method, such as IMPES and IMPIMS method;the other is simultaneous solution method, such as implicit and semi-implicit method. IMPIMS is a order solution method,Which is the mixture of IMPES and semi-implicit method. It does not only have characteristics of semi-implicit to obtain saturation, but also keep advantages of IMPES which saves memory and calculating workload.