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Experimental Study of Forced Imbibition in Tight Reservoirs Based on Nuclear Magnetic Resonance under High-Pressure Conditions

Author

Listed:
  • Xiaoshan Li

    (Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, China)

  • Liu Yang

    (State Key Laboratory for Tunnel Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Dezhi Sun

    (China Railway Tianjin Metro, Tianjin 300450, China)

  • Bingjian Ling

    (China Railway Tianjin Metro, Tianjin 300450, China)

  • Suling Wang

    (School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, China)

Abstract

This study utilizes nuclear magnetic resonance (NMR) techniques to monitor complex microstructures and fluid transport, systematically examining fluid distribution and migration during pressure imbibition. The results indicate that increased applied pressure primarily affects micropores and small pores during the initial imbibition stage, enhancing the overall imbibition rate and oil recovery. Higher capillary pressure in the pores strengthens the imbibition ability, with water initially displacing oil from smaller pores. Natural microfractures allow water to preferentially enter and displace oil, thereby reducing oil recovery from these pores. Additionally, clay minerals may induce fracture expansion, facilitating oil flow into the expanding space. This study provides new insights into fluid distribution and migration during pressure imbibition, offering implications for improved oil production in tight reservoirs.

Suggested Citation

  • Xiaoshan Li & Liu Yang & Dezhi Sun & Bingjian Ling & Suling Wang, 2024. "Experimental Study of Forced Imbibition in Tight Reservoirs Based on Nuclear Magnetic Resonance under High-Pressure Conditions," Energies, MDPI, vol. 17(12), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:12:p:2993-:d:1416871
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    References listed on IDEAS

    as
    1. Tao Li & Ying Wang & Min Li & Jiahao Ji & Lin Chang & Zheming Wang, 2019. "Study on the Impacts of Capillary Number and Initial Water Saturation on the Residual Gas Distribution by NMR," Energies, MDPI, vol. 12(14), pages 1-15, July.
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