Study on the synergy between silica nanoparticles and surfactants for enhanced oil recovery during spontaneous imbibition

By Mingwei Zhao, Wen-jiao Lv, Yuyang Li, Caili Dai, Xinke Wang, Hongda Zhou, Chenwei Zou, Mingwei Gao, Yue Zhang, Yining Wu. Journal of Molecular Liquids, 2018

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Abstract Silica nanofluid with silica nanoparticles and surfactants was prepared and used to enhance oil recovery through spontaneous imbibition. Nonionic surfactant (TX-100) as dispersant and synergistic enhancement agent was used to disperse silica nanoparticles into water. The silica nanofluid showed excellent anti-temperature and anti-salinity property. Because of synergistic effect, silica nanofluid has much better ability of oil detachment and wettability alteration than surfactant. The imbibition tests showed that silica nanofluid can improve oil recovery to about 16%, comparing with about 8% oil recovery of TX-100 solution, which improved the synergistic effect mechanism. The silica nanofluid has good application foreground for EOR.

Subfields: Analytical Chemistry, Mechanics of Materials, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/16b7625f750531dc853da519403a8efed0c5a0a8