Effect of TiO2–SiO2 hybrid nanofluids on enhanced oil recovery process under different wettability conditions

The effect of TiO2–SiO2 hybrid nanofluid on the enhanced oil recovery process is experimentally investigated. flooding efficiency measured for a in an initially oil-filled transparent micro-porous medium. Measurements were performed two different surface wettability conditions, namely water-wet and neutral-wet. average nanoparticle size, viscosity, tension, contact angle are reported. compared with that SiO2 TiO2 nanofluid. experimental results reveal neutral-wet condition, achieves best recovery, whereas produces efficiency. Obtained showed unstable, larger aggregated particles settling under gravity, therefore not suitable by itself. depends significantly fluid stability, porous wall, three phases (crude oil, solution, solid surface). reduces tension while increasing solution stability. Cited as: Goharzadeh, A., Fatt, Y. Y., Sangwai, J. S. Effect – nanofluids conditions. Capillarity, 2023, 8(1): 1-10. https://doi.org/10.46690/capi.2023.07.01