Abstract In this work, phase-field method is used to develop a numerical model to simulate two-phase flow through a heterogeneous fractured porous medium. Various sensitivity analyses were performed to assess the impact of wettability, fracture aperture, interfacial tension, and water injection velocity on the displacement process. It was observed that the water mass imbibed into the matrix block varies linearly with time before the water front meets the outlet, known as “filling fracture” regime, which is captured for the first time in a numerical study. It is revealed that increasing the fracture aperture reduces water breakthrough time and oil recovery.

中文翻译：

---

孔隙尺度多孔介质逆流自吸过程中水油两相流数值模拟

摘要 在这项工作中，相场法被用来建立数值模型来模拟通过非均质裂缝多孔介质的两相流。进行了各种敏感性分析以评估润湿性、裂缝孔径、界面张力和注水速度对驱替过程的影响。据观察，在水前缘与出口相遇之前，吸收到基质块中的水团随时间线性变化，称为“填充裂缝”状态，这是在数值研究中首次捕获的。结果表明，增加裂缝孔径会减少见水时间和石油采收率。