摘要
基于低渗透油藏的人工压裂开采的离散裂缝模型,考虑基质岩块中非达西渗流模式,对此类油藏的注水开发进行数值模拟研究.首先对裂缝进行降维处理,建立相应的数学模型;考虑裂缝的复杂几何形状,基于非结构化网格应用控制体积有限差分法进行数值求解,通过数例验证方法的正确性;给出两个注水开发数值算例,分析不同非达西渗流模式对开发效果的影响.
A discrete fracture model is used to simulate water flooding in low permeability reservoirs considering nonlinear flow characteristic of matrix system. At first, we reduce dimension of fractures and propose a mathematical model. On this basis, unstructured grid and control volume finite difference method are applied to numerical computation considering complex geometry of fractures. Accuracy of simulator is validated through a simple example. At last, two water-injection tests are performed to analyze effect of different non-Darcy flow models.
出处
《计算物理》
CSCD
北大核心
2015年第2期177-185,共9页
Chinese Journal of Computational Physics
基金
国家973(2011CB201004)
国家科技重大专项(2011ZX05014-005-003 HZ)资助项目
关键词
低渗透油藏
离散裂缝模型
非达西渗流
两相流
控制体积有限差分法
low permeability reservoir
discrete fracture model
non-Darcy flow
two phase flow
control volume finite difference method
