油藏渗流模型与数值模拟技术研究进展

Research progress of reservoir seepage model and numerical simulation technology

本文把油藏渗流类型划分为解析模型、半解析模型、数值模型,列举了近年来我国学者所发表的代表性成果。我国大多数渗流模型都是在现有模型上应用新方法不断进行优化创新为主流发展趋势,从时间上来看,模型逐渐从理想化、简单化向真实化、普适化演变。最后文章综述了有限差分法、有限体积法和有限元法三种油藏渗流模型求解方法的对应原理,列举了三种方法在油藏数值模拟方面的部分应用成果,并总结归纳出有限元法作为主要求解方法在油藏数值模拟方面的优点,即具有便于对含有复杂边界的油藏区域进行整体剖分、避免了直接构建全域近似函数、处理偏微分方程的计算精度较高等突出优势。

In this paper,different types of reservoir seepage flow are divided into analytical model,semi-analytical model and numerical model.Most of the percolation models in our country are constantly optimized and innovated by applying new methods on the existing models as the mainstream development trend.From the perspective of time,the models gradually evolve from idealization and simplification to reality and universality.Finally the article summarizes the finite difference method,finite volume method and finite element method,three kinds of dense oil reservoir seepage model solving method,the corresponding principle of lists three methods in the application of reservoir numerical simulation results,and sums up the finite element method as the main method in the aspect of reservoir numerical simulation,the advantages of the area with easy to contain complex boundary of reservoir,to avoid the whole subdivision directly build global approximation function,processing,partial differential equations of the prominent advantages of high calculation precision.