IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v283y2023ics0360544223024830.html

Thermodynamic energy change and occurrence mechanism of multiple fluids in coal reservoirs

Author

Listed:
  • Gao, Changjing
  • Liu, Dameng
  • Vandeginste, Veerle
  • Cai, Yidong
  • Sun, Fengrui

Abstract

Systematic understanding of the occurrence mechanism of multiple fluids in coal reservoirs is the basis for efficient development of coalbed methane (CBM). In this study, the adsorption capacity, adsorption potential and adsorption heat data of coal samples of different metamorphic degrees under single/multi components isothermal adsorption were obtained through isothermal adsorption equipment and the atomic force microscopy (AFM). The adsorption potential energy and electric potential energy were innovatively combined to expound the characteristics of the thermodynamic energy change in coal reservoirs, and the occurrence mechanism of multiple fluids in coal reservoirs were discussed. It is found that: (a) the adsorption amount of these two gases decreases first and then increases with the increase of coal rank in both single-phase adsorption and competitive adsorption. (b) CO2 shows superior adsorption in comparison to CH4. The larger the proportion of a certain component in the mixed gases system, the better this component's adsorption performance. (c) The adsorption potential of the two gases is not affected by temperature, and with the increase of coal metamorphism, the adsorption potential shows first a decrease, followed by an increase. (d) The CH4 adsorption heat of coal samples increase with higher adsorption amount, but the CO2 adsorption heat of some coal samples has a negative linear correlation with adsorption amount.

Suggested Citation

  • Gao, Changjing & Liu, Dameng & Vandeginste, Veerle & Cai, Yidong & Sun, Fengrui, 2023. "Thermodynamic energy change and occurrence mechanism of multiple fluids in coal reservoirs," Energy, Elsevier, vol. 283(C).
    • Handle: RePEc:eee:energy:v:283:y:2023:i:c:s0360544223024830
    DOI: 10.1016/j.energy.2023.129089
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223024830
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.129089?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    References listed on IDEAS

    as
    1. Wen, Hu & Mi, Wansheng & Fan, Shixing & Liu, Mingyang & Cheng, Xiaojiao & Wang, Hu, 2023. "Determining the reasonable volume required to inject liquid CO2 into a single hole and displace CH4 within the coal seam in bedding boreholes: case study of SangShuPing coal mine," Energy, Elsevier, vol. 266(C).
    2. Sun, Fengrui & Liu, Dameng & Cai, Yidong & Qiu, Yongkai, 2023. "Coal rank-pressure coupling control mechanism on gas adsorption/desorption in coalbed methane reservoirs," Energy, Elsevier, vol. 270(C).
    3. Li, Zhongbei & Ren, Ting & Li, Xiangchun & Cheng, Yuanping & He, Xueqiu & Lin, Jia & Qiao, Ming & Yang, Xiaohan, 2023. "Full-scale pore structure characterization of different rank coals and its impact on gas adsorption capacity: A theoretical model and experimental study," Energy, Elsevier, vol. 277(C).
    4. Huang, Liang & Ning, Zhengfu & Wang, Qing & Zhang, Wentong & Cheng, Zhilin & Wu, Xiaojun & Qin, Huibo, 2018. "Effect of organic type and moisture on CO2/CH4 competitive adsorption in kerogen with implications for CO2 sequestration and enhanced CH4 recovery," Applied Energy, Elsevier, vol. 210(C), pages 28-43.
    5. Li, Jiawei & Sun, Chenhao, 2022. "Molecular insights on competitive adsorption and enhanced displacement effects of CO2/CH4 in coal for low-carbon energy technologies," Energy, Elsevier, vol. 261(PB).
    6. Yang, Wei & Wang, Yihan & Yan, Fazhi & Si, Guangyao & Lin, Baiquan, 2022. "Evolution characteristics of coal microstructure and its influence on methane adsorption capacity under high temperature pyrolysis," Energy, Elsevier, vol. 254(PA).
    7. Chen, Junqing & Jiang, Fujie & Cong, Qi & Pang, Xiongqi & Ma, Kuiyou & Shi, Kanyuan & Pang, Bo & Chen, Dongxia & Pang, Hong & Yang, Xiaobin & Wang, Yuying & Li, Bingyao, 2023. "Adsorption characteristics of shale gas in organic–inorganic slit pores," Energy, Elsevier, vol. 278(C).
    8. Geng, Weile & Huang, Gun & Guo, Shengli & Jiang, Changbao & Dong, Ziwen & Wang, Wensong, 2022. "Influence of long-term CH4 and CO2 treatment on the pore structure and mechanical strength characteristics of Baijiao coal," Energy, Elsevier, vol. 242(C).
    9. Abunowara, Mustafa & Sufian, Suriati & Bustam, Mohamad Azmi & Eldemerdash, Usama & Suleman, Humbul & Bencini, Roberto & Assiri, Mohammed Ali & Ullah, Sami & Al-Sehemi, Abdullah G., 2020. "Experimental measurements of carbon dioxide, methane and nitrogen high-pressure adsorption properties onto Malaysian coals under various conditions," Energy, Elsevier, vol. 210(C).
    10. Shi, Qingmin & Cui, Shidong & Wang, Shuangming & Mi, Yichen & Sun, Qiang & Wang, Shengquan & Shi, Chenyu & Yu, Jizhou, 2022. "Experiment study on CO2 adsorption performance of thermal treated coal: Inspiration for CO2 storage after underground coal thermal treatment," Energy, Elsevier, vol. 254(PA).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Budhathoki, Samir & Igwe, Uche & Huang, Zaixing & Dangi, Mohan B. & Thapa, Resham B. & Paneru, Ramhari & Urynowicz, Michael A., 2025. "Competitive CO2/CH4 adsorption and desorption in Powder River Basin coals: Implications for carbon storage," Energy, Elsevier, vol. 333(C).
    2. Fu, Shenguang & Wang, Liang & Li, Shuohao & Ni, Sijia & Cheng, Yuanping & Zhang, Xiaolei & Liu, Shimin, 2024. "Re-thinking methane storage mechanism in highly metamorphic coalbed reservoirs — A molecular simulation considering organic components," Energy, Elsevier, vol. 293(C).
    3. Jia, Jinzhang & Xing, Yinghuan, 2025. "Study on the effect of organic small molecules on methane adsorption-diffusion characteristics based on GCMC、MD and DFT," Energy, Elsevier, vol. 335(C).
    4. He, Jun & Wang, Bohao & Lu, Zhongliang, 2023. "Experimental study on the effect of magma intrusion and temperature on the pore structure of coal," Energy, Elsevier, vol. 284(C).
    5. Ji, Bingnan & Pan, Hongyu & Pang, Mingkun & Pan, Mingyue & Zhang, Hang & Zhang, Tianjun, 2023. "Molecular simulation of CH4 adsorption characteristics in bituminous coal after different functional group fractures," Energy, Elsevier, vol. 282(C).
    6. Dabbaghi, Ehsan & Ng, Kam, 2024. "Effects of CO2 on the mineralogy, mechanical, and transport properties of rocks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 199(C).
    7. Babaei, Saeed & Ghasemzadeh, Hasan, 2025. "From rigidity to flexibility: Understanding ethane adsorption and diffusion in shale under moist and saline conditions," Energy, Elsevier, vol. 314(C).
    8. Zang, Jie & Liu, Jialong & He, Jiabei & Zhang, Xiapeng, 2023. "Characterization of the pore structure in Chinese anthracite coal using FIB-SEM tomography and deep learning-based segmentation," Energy, Elsevier, vol. 282(C).
    9. Zhao, Zhi & Lu, Hai-Feng, 2023. "Deep learning interprets failure process of coal reservoir during CO2-desorption by 3D reconstruction techniques," Energy, Elsevier, vol. 282(C).
    10. Nie, Bin & Sun, Sijia, 2023. "Thermal recovery of coalbed methane: Modeling of heat and mass transfer in wellbores," Energy, Elsevier, vol. 263(PD).
    11. Yang, Xiaolong & Shi, Qingmin & Wang, Shuangming & Cui, Shidong & Kou, Bingyang & Li, Chunhao, 2025. "Micromechanical response characteristics and control mechanism of SCCO2 injection into the semi-coke layer of tar-rich coal in-situ pyrolysis," Energy, Elsevier, vol. 334(C).
    12. Li, Yunzhuo & Ji, Huaijun & Li, Guichuan & Hu, Shaobin & Liu, Xu, 2023. "Effect of supercritical CO2 transient high-pressure fracturing on bituminous coal microstructure," Energy, Elsevier, vol. 282(C).
    13. Wu, Jian & Shen, Luming & Huang, Pengyu & Gan, Yixiang, 2023. "Selective adsorption and transport of CO2–CH4 mixture under nano-confinement," Energy, Elsevier, vol. 273(C).
    14. Li, Jiawei & Sun, Chenhao, 2022. "Molecular insights on competitive adsorption and enhanced displacement effects of CO2/CH4 in coal for low-carbon energy technologies," Energy, Elsevier, vol. 261(PB).
    15. Lingling Lu & Chen Guo & Zhenlong Chen & Hang Yuan, 2022. "Quantitative Identification of Water Sources of Coalbed Methane Wells, Based on the Hydrogen and Oxygen Isotopes of Produced Water—A Case of the Zhijin Block, South China," Energies, MDPI, vol. 15(24), pages 1-19, December.
    16. Wang, Liang & Wu, Songwei & Li, Ziwei & An, Fenghua & Lu, Zhuang & Su, Sheng & Jiang, Changbao, 2024. "Diffusion distance variations in coal pulverization based on equivalent matrix size: Implications for coal and gas outburst indicators," Energy, Elsevier, vol. 305(C).
    17. Duan, Zhengxiao & Zhang, Yanni & Deng, Jun & Shu, Pan & Yao, Di, 2023. "A systematic exploration of mapping knowledge domains for free radical research related to coal," Energy, Elsevier, vol. 282(C).
    18. Lei Pan & Ling Chen & Peng Cheng & Haifeng Gai, 2022. "Methane Storage Capacity of Permian Shales with Type III Kerogen in the Lower Yangtze Area, Eastern China," Energies, MDPI, vol. 15(5), pages 1-23, March.
    19. Liu, Wei & Chu, Xiangyu & Xu, Hao & Chen, Wei & Ma, Liwei & Qin, Yueping & Wei, Jun, 2022. "Oxidation reaction constants for coal spontaneous combustion under inert gas environments: An experimental investigation," Energy, Elsevier, vol. 247(C).
    20. Qin, Chao & Jiang, Yongdong & Zuo, Shuangying & Chen, Shiwan & Xiao, Siyou & Liu, Zhengjie, 2021. "Investigation of adsorption kinetics of CH4 and CO2 on shale exposure to supercritical CO2," Energy, Elsevier, vol. 236(C).

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:283:y:2023:i:c:s0360544223024830. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.