The results of the numerical study of oil recovery enhancement using nanosuspension are presented. The research was carried out using the volume of fluid method (VOF) for a 2D microporous core model. Experimentally measured values of interfacial tension (IFT) and the contact angle (CA) were used for numerical modeling. An aqueous suspension with silicon oxide nanoparticles (5 nm) is used. It was shown that when 1 wt% of nanoparticles are added to the displacing liquid, its density increases by about 1%, the viscosity increases by 10%, the IFT decreases by 10%, and the contact angle increases from 70 to 145\(^\circ \). The results of numerical study showed that the injection of nanoparticles has a significant effect on the displacement front movement in the microporous model. It has been shown that the nanosuspension can increase the oil recovery factor (ORF) almost twice as compared to water. To clarify the mechanisms of increasing the oil recovery during the reservoir flooding with nanofluid, a systematic study of factors affecting the displacement process efficiency was carried out. Viscosity, interfacial tension and the wetting angle of the displacing fluid were considered as such factors. As a result of systematic research, it has been shown that the main factor affecting the increase in the oil recovery flooding of nanosuspensions is a variation of wettability.

给出了使用纳米悬浮液提高采收率数值研究的结果。该研究是使用流体体积法（VOF）对2D微孔岩心模型进行的。界面张力（IFT）和接触角（CA）的实验测量值用于数值建模。使用具有氧化硅纳米颗粒（5nm）的水悬浮液。结果表明，当将1 wt％的纳米粒子添加到置换液中时，其密度增加约1％，粘度增加10％，IFT减少10％，接触角从70增加到145 \（ ^ \ circ \）。数值研究结果表明，纳米颗粒的注入对微孔模型中位移前移有显着影响。已经表明，与水相比，纳米悬浮液可以提高几乎两倍的油采收率（ORF）。为了阐明提高纳米流体油藏驱油过程中采收率的机制，对影响驱替效率的因素进行了系统的研究。这些因素被认为是粘度，界面张力和置换液的润湿角。系统研究的结果表明，影响纳米悬浮液采油量增加的主要因素是润湿性的变化。