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April 26, 2026ProcessesOpen Access

Nanoemulsion Flooding in Low-Permeability Systems: Pore-Scale Displacement Behavior and Capillary Effects

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Authors

JWJun WangChina National Petroleum Corporation (China)YZYan ZhouFoshan UniversityLZLijun ZhengChina National Petroleum Corporation (China)

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Implication

Experimental study investigates nanoemulsion behavior in micrometer-scale capillaries, revealing key mechanisms for oil recovery.

Key Points

  • This research aims to understand the displacement behavior and capillary dynamics of nanoemulsions in low-permeability systems.
  • Developed a micro-capillary bundle apparatus to simulate displacement processes.
  • Analyzed the relationship between interface velocity and pressure difference using the Washburn equation.
  • Examined the effects of environmental factors and the addition of microspheres on capillary resistance.
  • Displacement follows the Washburn equation with a linear relationship between interface velocity and pressure difference.
  • Capillary force remains negative, acting as a resistance during oil displacement, indicating a pressure-driven mechanism.
  • Pore size is the dominant factor affecting displacement, while microspheres can reduce resistance and lower driving pressure.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/69edac794a46254e215b4367https://doi.org/10.3390/pr14091370
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