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Increment-dimensional precise integration method of two-phase oil-water flows in a low permeability reservoir
Author(s): 
Pages: 993-997
Year: Issue:  6
Journal: Acta Petrolei Sinica

Abstract: 采用增维精细积分法对低渗透油藏油、水两相耦合渗流进行了模拟分析.首先,根据有限差分原理建立了以网格节点孔隙流体压力表示的状态方程,然后根据增维精细积分法建立了求解网格节点孔隙流体压力的递推公式以及显式求解饱和度的计算公式.最后,以典型五点面积注水开发为例,分别采用增维精细积分法和常规的IMPES法进行数值模拟,由两种方法所得的计算结果吻合很好.同时,研究了启动压力梯度对含水率和采油量的影响规律.结...
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