IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v239y2022ipcs0360544221024956.html
   My bibliography  Save this article

N2 injection to enhance coal seam gas drainage (N2-ECGD): Insights from underground field trial investigation

Author

Listed:
  • Yang, Xin
  • Wang, Gongda
  • Du, Feng
  • Jin, Longzhe
  • Gong, Haoran

Abstract

Pre-gas drainage plays a significant role of preventing gas disasters in underground coal mines. However, it is difficult to reduce the gas content to below the threshold values, especially in low permeability coal seams in China. Previous field trials on the enhanced coalbed methane recovery (ECBM) by nitrogen injection mostly focused on the ground. Until now, few attempts on N2 injection to enhance coal seam gas drainage (N2-ECGD) and no sufficient evidences can indicate the good effect. In this study, exploratory tests of N2-ECGD were carried out in underground low-gas coal seams (with gas content less than 5 m3/t). An experiment to displace the CH4 in coal by N2 injection under constant pressure conditions was first carried out. The results show that continuous N2 injection can promote the desorption of CH4 in the coal pores, which cannot be achieved under normal pressure. N2-ECGD field trials were conducted in the working face of a coal mine in Hejin City, Shanxi Province, China. The effective pressure of N2 injection (EPI) was investigated. Intermittent and continuous N2 injection trials were carried out to study the response characteristics of the gas flow rate, CH4 concentration, and flow rate. The results show an EPI of 0.45 MPa and gas injection radius of 5 m. The gas flow rate increased significantly after N2 injection. Although the CH4 concentration decreased, the CH4 flow rate remained high. On the basis of the change characteristics of gas drainage parameters, the physical process of N2-ECGD was analyzed. The research results obtained in this study can serve as a reference for the application of N2-ECGD in low permeability coal seams. The study also provides a new technical approach for local gas prevention and control in underground coal mines.

Suggested Citation

  • Yang, Xin & Wang, Gongda & Du, Feng & Jin, Longzhe & Gong, Haoran, 2022. "N2 injection to enhance coal seam gas drainage (N2-ECGD): Insights from underground field trial investigation," Energy, Elsevier, vol. 239(PC).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pc:s0360544221024956
    DOI: 10.1016/j.energy.2021.122247
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221024956
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2021.122247?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 search for a different version of it.

    References listed on IDEAS

    as
    1. Jiang, Yongdong & Luo, Yahuang & Lu, Yiyu & Qin, Chao & Liu, Hui, 2016. "Effects of supercritical CO2 treatment time, pressure, and temperature on microstructure of shale," Energy, Elsevier, vol. 97(C), pages 173-181.
    2. 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).
    3. Yin, Hong & Zhou, Junping & Xian, Xuefu & Jiang, Yongdong & Lu, Zhaohui & Tan, Jingqiang & Liu, Guojun, 2017. "Experimental study of the effects of sub- and super-critical CO2 saturation on the mechanical characteristics of organic-rich shales," Energy, Elsevier, vol. 132(C), pages 84-95.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Hu, Linjie & Feng, Zengchao & Zhou, Dong & Wang, Xing, 2023. "Mechanisms and field application of in-situ heat injection-enhanced gas drainage," Energy, Elsevier, vol. 284(C).
    2. Song, Haoran & Zhong, Zheng & Lin, Baiquan, 2023. "Impact of methane gas diffusion in coal on elastic modulus and porosity: Modeling and analysis," Energy, Elsevier, vol. 271(C).
    3. Fang, Xiyang & Tan, Bo & Wang, Haiyan & Wang, Feiran & Li, Tianze & Wan, Bo & Xu, Changfu & Qi, Qingjie, 2024. "Experimental study on the displacement effect and inerting differences of inert gas in loose broken coal," Energy, Elsevier, vol. 289(C).
    4. Xiaojun Feng & Zichuang Ai & Xuebo Zhang & Qilei Wei & Chenjun Du & Qiming Zhang & Chuan Deng, 2023. "Numerical Investigation of the Evolution of Gas and Coal Spontaneously Burned Composite Disaster in the Goaf of Steeply Inclined Coal Seam," Sustainability, MDPI, vol. 15(12), pages 1-17, June.
    5. Wang, Kai & Gong, Haoran & Wang, Gongda & Yang, Xin & Xue, Haiteng & Du, Feng & Wang, Zhie, 2024. "N2 injection to enhance gas drainage in low-permeability coal seam: A field test and the application of deep learning algorithms," Energy, Elsevier, vol. 290(C).
    6. Bai, Yang & Lin, Hai-Fei & Li, Shu-Gang & Long, Hang & Yan, Min & Li, Yong & Qin, Lei & Zhou, Bin, 2022. "Experimental study on kinetic characteristics of gas diffusion in coal under nitrogen injection," Energy, Elsevier, vol. 254(PA).
    7. Huang, Qiming & li, Mingyang & Yan, Yuting & Ni, Guanhua & Guo, Zhiguo, 2023. "Influence mechanism of inorganic salts on coal permeability during foam fracturing," Energy, Elsevier, vol. 276(C).
    8. Wenjie Xu & Xigui Zheng & Cancan Liu & Peng Li & Boyang Li & Kundai Michael Shayanowako & Jiyu Wang & Xiaowei Guo & Guowei Lai, 2022. "Numerical Simulation Study of High-Pressure Air Injection to Promote Gas Drainage," Sustainability, MDPI, vol. 14(21), pages 1-15, October.

    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. Zhou, Junping & Tian, Shifeng & Zhou, Lei & Xian, Xuefu & Yang, Kang & Jiang, Yongdong & Zhang, Chengpeng & Guo, Yaowen, 2020. "Experimental investigation on the influence of sub- and super-critical CO2 saturation time on the permeability of fractured shale," Energy, Elsevier, vol. 191(C).
    2. Qin, Chao & Jiang, Yongdong & Luo, Yahuang & Zhou, Junping & Liu, Hao & Song, Xiao & Li, Dong & Zhou, Feng & Xie, Yingliang, 2020. "Effect of supercritical CO2 saturation pressures and temperatures on the methane adsorption behaviours of Longmaxi shale," Energy, Elsevier, vol. 206(C).
    3. Lu, Yiyu & Xu, Zijie & Li, Honglian & Tang, Jiren & Chen, Xiayu, 2021. "The influences of super-critical CO2 saturation on tensile characteristics and failure modes of shales," Energy, Elsevier, vol. 221(C).
    4. Feng, Gan & Kang, Yong & Sun, Ze-dong & Wang, Xiao-chuan & Hu, Yao-qing, 2019. "Effects of supercritical CO2 adsorption on the mechanical characteristics and failure mechanisms of shale," Energy, Elsevier, vol. 173(C), pages 870-882.
    5. 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).
    6. Lyu, Qiao & Long, Xinping & Ranjith, P.G. & Tan, Jingqiang & Kang, Yong & Wang, Zhanghu, 2018. "Experimental investigation on the mechanical properties of a low-clay shale with different adsorption times in sub-/super-critical CO2," Energy, Elsevier, vol. 147(C), pages 1288-1298.
    7. Yugang Cheng & Mengru Zeng & Zhaohui Lu & Xidong Du & Hong Yin & Liu Yang, 2020. "Effects of Supercritical CO 2 Treatment Temperatures on Mineral Composition, Pore Structure and Functional Groups of Shale: Implications for CO 2 Sequestration," Sustainability, MDPI, vol. 12(9), pages 1-22, May.
    8. Bai, Bing & Ni, Hong-jian & Shi, Xian & Guo, Xing & Ding, Lu, 2021. "The experimental investigation of effect of supercritical CO2 immersion on mechanical properties and pore structure of shale," Energy, Elsevier, vol. 228(C).
    9. Lu, Yiyu & Chen, Xiayu & Tang, Jiren & Li, Honglian & Zhou, Lei & Han, Shuaibin & Ge, Zhaolong & Xia, Binwei & Shen, Huajian & Zhang, Jing, 2019. "Relationship between pore structure and mechanical properties of shale on supercritical carbon dioxide saturation," Energy, Elsevier, vol. 172(C), pages 270-285.
    10. 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).
    11. Ahmed Fatah & Ziad Bennour & Hisham Ben Mahmud & Raoof Gholami & Md. Mofazzal Hossain, 2020. "A Review on the Influence of CO 2 /Shale Interaction on Shale Properties: Implications of CCS in Shales," Energies, MDPI, vol. 13(12), pages 1-27, June.
    12. Yin, Hong & Zhou, Junping & Xian, Xuefu & Jiang, Yongdong & Lu, Zhaohui & Tan, Jingqiang & Liu, Guojun, 2017. "Experimental study of the effects of sub- and super-critical CO2 saturation on the mechanical characteristics of organic-rich shales," Energy, Elsevier, vol. 132(C), pages 84-95.
    13. Wang, Chongyang & Zhang, Dongming & Liu, Chenxi & Pan, Yisha & Jiang, Zhigang & Yu, Beichen & Lin, Yun, 2023. "Deformation and seepage characteristics of water-saturated shale under true triaxial stress," Energy, Elsevier, vol. 284(C).
    14. Jin, Lu & Hawthorne, Steven & Sorensen, James & Pekot, Lawrence & Kurz, Bethany & Smith, Steven & Heebink, Loreal & Herdegen, Volker & Bosshart, Nicholas & Torres, José & Dalkhaa, Chantsalmaa & Peters, 2017. "Advancing CO2 enhanced oil recovery and storage in unconventional oil play—Experimental studies on Bakken shales," Applied Energy, Elsevier, vol. 208(C), pages 171-183.
    15. Xu, Chao & Wang, Wenjing & Wang, Kai & Zhou, Aitao & Guo, Lin & Yang, Tong, 2023. "Filling–adsorption mechanism and diffusive transport characteristics of N2/CO2 in coal: Experiment and molecular simulation," Energy, Elsevier, vol. 282(C).
    16. Qin, Chao & Jiang, Yongdong & Cao, Mengyao & Zhou, Junping & Song, Xiao & Zuo, Shuangying & Chen, Shiwan & Luo, Yahuang & Xiao, Siyou & Yin, Hong & Du, Xidong, 2023. "Experimental study on the methane desorption-diffusion behavior of Longmaxi shale exposure to supercritical CO2," Energy, Elsevier, vol. 262(PA).
    17. Liu, Bo & Mohammadi, Mohammad-Reza & Ma, Zhongliang & Bai, Longhui & Wang, Liu & Xu, Yaohui & Hemmati-Sarapardeh, Abdolhossein & Ostadhassan, Mehdi, 2023. "Pore structure evolution of Qingshankou shale (kerogen type I) during artificial maturation via hydrous and anhydrous pyrolysis: Experimental study and intelligent modeling," Energy, Elsevier, vol. 282(C).
    18. Wenjie Xu & Xigui Zheng & Cancan Liu & Peng Li & Boyang Li & Kundai Michael Shayanowako & Jiyu Wang & Xiaowei Guo & Guowei Lai, 2022. "Numerical Simulation Study of High-Pressure Air Injection to Promote Gas Drainage," Sustainability, MDPI, vol. 14(21), pages 1-15, October.
    19. Sean P. Rigby & Ali Alsayah & Richard Seely, 2022. "Impact of Exposure to Supercritical Carbon Dioxide on Reservoir Caprocks and Inter-Layers during Sequestration," Energies, MDPI, vol. 15(20), pages 1-34, October.
    20. Zhang, Rongda & Wei, Jing & Zhao, Xiaoli & Liu, Yang, 2022. "Economic and environmental benefits of the integration between carbon sequestration and underground gas storage," Energy, Elsevier, vol. 260(C).

    More about this item

    Keywords

    Coal; Coal seam gas; Gas diffusion; N2 injection; Enhanced gas drainage;
    All these keywords.

    JEL classification:

    • N2 - Economic History - - Financial Markets and Institutions

    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:239:y:2022:i:pc:s0360544221024956. 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.