Performance evaluation and formation mechanism of Janus-SiO2 nanoparticles assisted viscoelastic surfactant fracturing fluids

Xuehao Zhang,Han Jia,Guopeng Wu,Mingming Xu,Chuanqi Li,Ziwei Wei,Wenxin Cao, Xiyang Wang,Kaihe Lv,Dexin Liu,Pan Huang

Journal of Molecular Liquids（2023）

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摘要

•The effects of Janus-SiO2 NPs on various VES fluids are systematically investigated.•Janus-SiO2 NPs-assisted cationic-based VES fluid exhibits greater viscoelasticity.•Hydrophobic and electrostatic interactions lead to generation of micelle-nanoparticle junctions.•The electrostatic repulsion between NPs and cationic micelles inhibits the competitive adsorption.•The more stable micelle-nanoparticle junctions should be responsible for visible enhanced viscoelasticity.

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关键词

VES fracturing fluid, Janus-SiO 2 nanoparticles, Viscoelasticity, Wormlike micelles, Micelle-nanoparticle junctions

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