基于IMPES方法的可动凝胶调驱快速模拟研究  

Fast Simulating Method by Movable Gel Driving Based on IMDES Method

作　　者：张戈[1] 冯其红[1] 同登科[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061 [2]中国石油大学(华东)数学与计算科学学院,山东东营257061

出　　处：《石油天然气学报》2007年第5期112-115,共4页Journal of Oil and Gas Technology

基　　金：国家"863"基金项目(2004AA616130)

摘　　要：可动凝胶调驱数值模拟过程中计算流体的流动涉及到复杂的物理化学过程,同时如果再考虑毛管力和重力的作用,则模型每一时间步的计算工作量都是相当巨大的。在建立起可动凝胶调驱的油水两相八组分数学模型的基础上,引入Douglas分数步预测-校正格式,将三维模型中压力方程的隐式求解问题简化为一维隐式求解问题,在保证求解稳定的基础上,大大提高了运算速度。引入Brian分数步预测-校正格式求解饱和度方程,确保了饱和度方程求解的稳定性和高精度,从而实现了可动凝胶调驱模型的快速准确求解。Numerical simulation of flowing gel driving involved complex physical and chemical processes. Meanwhile, the effects of capillary and gravity were considered, the calculation would become more difficult, calculation was tremendous for every simulating time step. On the basis of establishing a two-phase (oil-water) and eight-composition model, by using Douglas fractional steps of predictor-corrector methods to solve pressure equation, a 1D implicit equation group was simplified for solving a 3D problem, by using Brian fractional steps of prediction correction methods were used to ensure the stability and accuracy of solving saturation equation. Two kinds of fractional steps of prediction-correction methods are used, the model of flowing gel driving can be solved more quickly and the result is precise.

关 键 词：化学驱 凝胶 数值模拟 IMPES方法 分数步预测-校正格式 三对角方程 剖面模型 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]