油藏数值模拟求解中的IMPIMS方法

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。

IMPIMS IN RESERVOIR NUMERICAL SIMULATION SOLUTION

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.