Effect of water fraction on the flow characteristics of water-in-oil (W/O) emulsions through porous medium has been investigated by experiments and computational fluid dynamics (CFD). Flooding experiments of W/O emulsions (E₁, E₂, E₃: water fraction, θ_w (%v/v), = 11.8, 22, to 38%, respectively) and those of original oil (E₀, θ_w = 0) were performed using a packed glass bead porous medium. The experimental information was used in building and validating a single-phase pore-scale flow model using the COMSOL Multiphysics 5.4 Software (base model). The simulated porosity (φ = 0.27) and absolute permeability (K_a = 74 mD) of the base model are in good agreement with those from the experiments (porosity φ = 0.30 and absolute permeability K_a = 68 mD). The simulated pressure drop and effective viscosity also compared fairly well with those obtained from the experiments (R² = 0.98; and 0.83, respectively). Ultimately, the CFD results show that the water fraction of W/O emulsion increased the viscosity, which subsequently increased the pressure drop. In addition, it was confirmed that the injection velocity and the pore size affect the flow characteristics in the porous medium.

通过实验和计算流体动力学（CFD）研究了水分数对油包水（W / O）乳液通过多孔介质流动特性的影响。驱W / O乳液的实验（ë ₁，ë ₂，ë ₃：水分数，θ_瓦特（％V / V），= 11.8，22至38％，）和那些原始油（Ë ₀，θ _w = 0）使用填充的玻璃珠多孔介质进行。实验信息用于使用COMSOL Multiphysics 5.4软件（基础模型）建立和验证单相孔隙水流模型。模拟孔隙率（φ基本模型的绝对渗透率（K _a = 74 mD）= 0.27与实验值（孔隙度φ = 0.30和绝对渗透率K _a = 68 mD）吻合良好。模拟的压降和有效粘度也与从实验中获得的压降和有效粘度进行了很好的比较（R ^2分别为0.98和0.83）。最终，CFD结果表明，W / O乳液的水分数增加了粘度，随后增加了压降。另外，已经证实注入速度和孔径影响多孔介质中的流动特性。