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Effect of Reservoir Heterogeneity on CO 2 Flooding in Tight Oil Reservoirs

Author

Listed:
  • Jiashun Luo

    (Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal Zellerfeld, Germany
    Research Centre of Energy Storage Technologies, Clausthal University of Technology, 38640 Goslar, Germany)

  • Zhengmeng Hou

    (Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal Zellerfeld, Germany
    Research Centre of Energy Storage Technologies, Clausthal University of Technology, 38640 Goslar, Germany)

  • Guoqing Feng

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Jianxing Liao

    (College of Civil Engineering, Guizhou University, Guiyang 550025, China)

  • Muhammad Haris

    (Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal Zellerfeld, Germany
    Department of Petroleum & Gas Engineering, University of Engineering & Technology, Lahore 54890, Pakistan)

  • Ying Xiong

    (Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal Zellerfeld, Germany
    Research Centre of Energy Storage Technologies, Clausthal University of Technology, 38640 Goslar, Germany)

Abstract

Carbon dioxide (CO 2 )-enhanced oil recovery (EOR) has great potential and opportunity for further development, and it is one of the vital carbon capture, utilization, and storage (CCUS) technologies. However, strong heterogeneity is one of the several challenges in developing reservoirs, especially for China’s continental tight oil reserves. This study investigates the effects of heterogeneous porosity and permeability on CO 2 flooding evolution in low-permeable tight formation. We simulated CO 2 -EOR using a numerical model developed on the platform of TOUGH2MP-TMVOC to evaluate the effect of different levels of heterogeneity on oil production, gas storage, and flow behaviors in a tight reservoir, controlled by standard deviation and correlation length. A comparison of nine cases reveals that porosity heterogeneity commonly intensifies flow channeling, and there is an oil production decline with higher standard deviation and longer correlation length of porosity field. In addition, the porosity correlation length has a negligible effect on reservoir performance when the standard deviation is relatively low. Furthermore, strong heterogeneity also has a negative impact on the storage capacity of CO 2 and oil production. Notably, as the standard deviation was raised to 0.1, a small sweep region arose with the early CO 2 breakthrough, which led to a worse flooding effect. Finally, this study exemplifies that a higher injection/production rate and CO 2 alternating N 2 injection strategies can improve oil recovery in highly heterogeneous reservoirs.

Suggested Citation

  • Jiashun Luo & Zhengmeng Hou & Guoqing Feng & Jianxing Liao & Muhammad Haris & Ying Xiong, 2022. "Effect of Reservoir Heterogeneity on CO 2 Flooding in Tight Oil Reservoirs," Energies, MDPI, vol. 15(9), pages 1-21, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3015-:d:798059
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    References listed on IDEAS

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    1. Faisal Mehmood & Michael Z. Hou & Jianxing Liao & Muhammad Haris & Cheng Cao & Jiashun Luo, 2021. "Multiphase Multicomponent Numerical Modeling for Hydraulic Fracturing with N-Heptane for Efficient Stimulation in a Tight Gas Reservoir of Germany," Energies, MDPI, vol. 14(11), pages 1-26, May.
    2. Matteo Vitali & Cristina Zuliani & Francesco Corvaro & Barbara Marchetti & Alessandro Terenzi & Fabrizio Tallone, 2021. "Risks and Safety of CO 2 Transport via Pipeline: A Review of Risk Analysis and Modeling Approaches for Accidental Releases," Energies, MDPI, vol. 14(15), pages 1-17, July.
    3. Muhammad Haris & Michael Z. Hou & Wentao Feng & Jiashun Luo & Muhammad Khurram Zahoor & Jianxing Liao, 2020. "Investigative Coupled Thermo-Hydro-Mechanical Modelling Approach for Geothermal Heat Extraction through Multistage Hydraulic Fracturing from Hot Geothermal Sedimentary Systems," Energies, MDPI, vol. 13(13), pages 1-21, July.
    4. Xiaomeng Cao & Yuan Gao & Jingwei Cui & Shuangbiao Han & Lei Kang & Sha Song & Chengshan Wang, 2020. "Pore Characteristics of Lacustrine Shale Oil Reservoir in the Cretaceous Qingshankou Formation of the Songliao Basin, NE China," Energies, MDPI, vol. 13(8), pages 1-25, April.
    5. Jiang, Kai & Ashworth, Peta & Zhang, Shiyi & Liang, Xi & Sun, Yan & Angus, Daniel, 2020. "China's carbon capture, utilization and storage (CCUS) policy: A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    6. Cheng Cao & Jianxing Liao & Zhengmeng Hou & Hongcheng Xu & Faisal Mehmood & Xuning Wu, 2020. "Utilization of CO 2 as Cushion Gas for Depleted Gas Reservoir Transformed Gas Storage Reservoir," Energies, MDPI, vol. 13(3), pages 1-20, January.
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    Cited by:

    1. Zhengmeng Hou & Jiashun Luo & Yachen Xie & Lin Wu & Liangchao Huang & Ying Xiong, 2022. "Carbon Circular Utilization and Partially Geological Sequestration: Potentialities, Challenges, and Trends," Energies, MDPI, vol. 16(1), pages 1-14, December.
    2. Chen Jiang & Qingjie Liu & Kaiqi Leng & Zubo Zhang & Xu Chen & Tong Wu, 2025. "The Temporal and Spatial Evolution of Flow Heterogeneity During Water Flooding for an Artificial Core Plate Model," Energies, MDPI, vol. 18(2), pages 1-18, January.
    3. Yi Zhang & Wenjing Li & Guodong Chen, 2022. "A Thermodynamic Model for Carbon Dioxide Storage in Underground Salt Caverns," Energies, MDPI, vol. 15(12), pages 1-20, June.

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