Nanofluid impact on fluid interaction and migration characteristics for enhanced oil recovery in Baikouquan tight glutenite

Nanofluids have broad prospects in enhancing the oil recovery of reservoirs with low porosity, permeability, high capillary pressure and recovery. However, modification effects nanofluids on tight glutenite remain unknown. In this paper, different proportions silica nanoparticles sodium dodecyl sulfate were prepared characterized by zeta potential particle size distribution. Then, interfacial tension reservoir wettability examined. Next, a computational fluid dynamics method was adopted to further investigate injection Baikouquan Formation at pore scale. The experimental results showed that all are stable systems uniform dispersion. between reduced up 8.01% compared water, changed from intermediate-wet strong hydrophilicity. simulation revealed water nanofluid flooding processes could be divided into two stages: initial channel establishment stage expansion stage. stage, hardly an enhanced effect due faster sharper migration fronts. clearly effect, as displace relative dead pores during flooding. After 10 volume displacement 1 MPa, using NF5 highest 76.58%. addition, higher led extraction lower near inlet smaller sweep area outlet; has both advantages disadvantages. Document Type: Original article Cited as: Cao, X., Li, Q., Myers, M., Xu, L., Chen, Tan, Y. Nanofluid impact interaction characteristics for glutenite. Advances Geo-Energy Research, 2023, 9(2): 94-105. https://doi.org/10.46690/ager.2023.08.03