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The seepage driving mechanism and effect of CO2 displacing CH4 in coal seam under different pressures

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  • Li, Zhenbao
  • Wang, Shaorui
  • Wei, Gaoming
  • Wang, Hu
  • Zhao, Haizhang
  • Liang, Rui

Abstract

The technology of CO2-ECBM holds the potential to enhance the efficiency of coalbed CH4 extraction by boosting the driving force of CH4 seepage and the desorption of adsorbed CH4 in coal. To investigate the seepage characteristics and displacement effects of gas during CO2-ECBM, the experiment of CO2 displacing CH4 in coal was conducted using a triaxial experimental system within a displacement pressure range of 1.5–4.0 MPa. The results showed that increased displacement pressure led to large coal swelling. This swelling caused a reduction in permeability, leading to high resistance to gas flow and the generation of elevated pore pressure. The distribution of the pore pressure in coal displayed a nonlinear feature, predominantly influenced by coal swelling during CO2 adsorption process. With the injection of CO2, the pressure field in the coal transitioned from an unstable to a stable state. The coal strain induced by CO2/CH4 adsorption-desorption varied, leading to the variation in pore pressure gradient and seepage flow rate, which ultimately impacted the displacement efficiency. The evolution of pressure field during CO2-ECBM provides valuable guidance for displacement effects. It contributes to a parametric optimization for CO2-ECBM application in CH4 extraction.

Suggested Citation

  • Li, Zhenbao & Wang, Shaorui & Wei, Gaoming & Wang, Hu & Zhao, Haizhang & Liang, Rui, 2024. "The seepage driving mechanism and effect of CO2 displacing CH4 in coal seam under different pressures," Energy, Elsevier, vol. 293(C).
    • Handle: RePEc:eee:energy:v:293:y:2024:i:c:s0360544224005127
    DOI: 10.1016/j.energy.2024.130740
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    References listed on IDEAS

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    1. Lin, Jia & Ren, Ting & Cheng, Yuanping & Nemcik, Jan & Wang, Gongda, 2019. "Cyclic N2 injection for enhanced coal seam gas recovery: A laboratory study," Energy, Elsevier, vol. 188(C).
    2. Niu, Qinghe & Cao, Liwen & Sang, Shuxun & Zhou, Xiaozhi & Wang, Zhenzhi & Wu, Zhiyong, 2017. "The adsorption-swelling and permeability characteristics of natural and reconstituted anthracite coals," Energy, Elsevier, vol. 141(C), pages 2206-2217.
    3. Li, Yujie & Zhai, Cheng & Xu, Jizhao & Sun, Yong & Yu, Xu, 2022. "Feasibility investigation of enhanced coalbed methane recovery by steam injection," Energy, Elsevier, vol. 255(C).
    4. Zhao, Pengxiang & Zhuo, Risheng & Li, Shugang & Lin, Haifei & Shu, Chi-Min & Shuang, Haiqing & Wei, Zongyong, 2023. "Greenhouse gas protection and control based upon the evolution of overburden fractures under coal mining: A review of methods, influencing factors, and techniques," Energy, Elsevier, vol. 284(C).
    5. Zhang, Chaolin & Wang, Enyuan & Li, Bobo & Kong, Xiangguo & Xu, Jiang & Peng, Shoujian & Chen, Yuexia, 2023. "Laboratory experiments of CO2-enhanced coalbed methane recovery considering CO2 sequestration in a coal seam," Energy, Elsevier, vol. 262(PA).
    6. Xu, Changwei & Nie, Wen & Liu, Zhiqiang & Peng, Huitian & Yang, Shibo & Liu, Qiang, 2019. "Multi-factor numerical simulation study on spray dust suppression device in coal mining process," Energy, Elsevier, vol. 182(C), pages 544-558.
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    2. Huang, Yanqin & Liu, Lanling & Shao, Yifan & Ma, Yifei & Guo, Lei & Sun, Leyi & Wang, Tipeng & Lu, Qiang, 2026. "A two-stage siting decision framework for biomass-coal co-firing with carbon capture and storage (BCCCS) retrofit of coal-fired power plants based on fuzzy theory: An empirical study in Hebei province," Renewable Energy, Elsevier, vol. 258(C).
    3. Wang, Xuefeng & Shi, Yan & Li, Yonggang & Xue, Wenshan & fan, Nan & Chen, Yihan & lv, Rui, 2025. "Experimental and numerical simulation study on the influence mechanism of flue gas displacing coalbed methane under stress conditions," Energy, Elsevier, vol. 333(C).

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