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Gas Flow Behavior of Nanoscale Pores in Shale Gas Reservoirs

Author

Listed:
  • Weijun Shen

    (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xizhe Li

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Yanmei Xu

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Yuping Sun

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Weigang Huang

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

Abstract

The gas transport in shale nanopores is always one of the major concerns in terms of the development of shale gas reservoirs. In this study, the gas flow regimes in shale nanopores were classified and analyzed according to Knudsen number. Then the gas flow model considering Darcy flow, slip flow, transition flow, molecular free flow and adsorption effect was proposed to evaluate the gas flow behavior in shale nanopores. The result shows that the contributions of Darcy flow, slip flow and transition flow in shale nanopores are reciprocal, and are mainly dominated by pore radius and pressure. The adsorption effect greatly influences the total mass flux. The total mass flux will increase as Langmuir pressure and temperature increase while it will decrease with reservoir pressure and the adsorption thickness. These results can provide insights for a better understanding of gas flow in the shale nanopores so as to optimize the production performance of shale gas reservoirs.

Suggested Citation

  • Weijun Shen & Xizhe Li & Yanmei Xu & Yuping Sun & Weigang Huang, 2017. "Gas Flow Behavior of Nanoscale Pores in Shale Gas Reservoirs," Energies, MDPI, vol. 10(6), pages 1-12, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:6:p:751-:d:99827
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    Citations

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    Cited by:

    1. Chuanliang Yan & Yuanfang Cheng & Fucheng Deng & Ji Tian, 2017. "Permeability Change Caused by Stress Damage of Gas Shale," Energies, MDPI, vol. 10(9), pages 1-11, September.
    2. Xin Chang & Yintong Guo & Jun Zhou & Xuehang Song & Chunhe Yang, 2018. "Numerical and Experimental Investigations of the Interactions between Hydraulic and Natural Fractures in Shale Formations," Energies, MDPI, vol. 11(10), pages 1-27, September.

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