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Solid-Liquid Interfacial Effects on Residual Oil Distribution Utilizing Three-Dimensional Micro Network Models

Author

Listed:
  • Weiyao Zhu

    (School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Bingbing Li

    (School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Yajing Liu

    (School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Hongqing Song

    (School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Xiaofeng Wang

    (Research Institute of Yanchang Petroleum (Group) Co. Ltd., Shanxi 716000, China)

Abstract

A number of experiments on fluid flow at the micro/nano-scale have demonstrated that flow velocity obviously deviates from the classical Poiseuille’s law due to the micro forces between the wall and the fluid. Based on an oil–water two-phase network simulation model, a three-dimensional pore-scale micro network model with solid–liquid interfacial effects was established. The influences of solid–liquid interface effects including van der Waals force and wettability on the residual oil distribution and relative permeability were investigated through microscopic simulation. The effects of pore radius, pore–throat size ratio, shaping factor, and coordination number on the residual oil distribution were analyzed at the same time. The results showed that the oil recovery would be overestimated by about 4% without van der Waals force in a water-wet reservoir. The impact of van der Waals force on water-wet reservoirs was significantly obvious in contrast with oil-wet reservoirs. In addition, the residual oil distribution was significantly influenced by pore radius in water-wet reservoir, comparatively influenced by pore–throat size ratio in oil-wet reservoir. The present study illustrates the successful application of three-dimensional micro network models considering solid–liquid interfacial effects, and provides new insights for oil recovery enhancement.

Suggested Citation

  • Weiyao Zhu & Bingbing Li & Yajing Liu & Hongqing Song & Xiaofeng Wang, 2017. "Solid-Liquid Interfacial Effects on Residual Oil Distribution Utilizing Three-Dimensional Micro Network Models," Energies, MDPI, vol. 10(12), pages 1-16, December.
  • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2059-:d:121684
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    Cited by:

    1. Pengyu Wang & Zhiliang Wang & Linfang Shen & Libin Xin, 2018. "Lattice Boltzmann Simulation of Fluid Flow Characteristics in a Rock Micro-Fracture Based on the Pseudo-Potential Model," Energies, MDPI, vol. 11(10), pages 1-14, September.

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