IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v11y2018i7p1722-d155541.html
   My bibliography  Save this article

Numerical Analysis of Heat and Gas Transfer Characteristics during Heat Injection Processes Based on a Thermo-Hydro-Mechanical Model

Author

Listed:
  • Yi Xue

    (State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
    Institute of Geotechnical Engineering, Shaanxi Provincial Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an 710048, China)

  • Faning Dang

    (State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
    Institute of Geotechnical Engineering, Shaanxi Provincial Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an 710048, China)

  • Zhengzheng Cao

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Feng Du

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Fei Liu

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Jie Ren

    (State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
    Institute of Geotechnical Engineering, Shaanxi Provincial Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an 710048, China)

  • Feng Gao

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Heat injection is an important artificial technique, which can significantly enhance the extraction efficiency of coal seam gas (CSG) and reduce the outburst risk caused by CSG. Although heat injection has been comprehensively investigated, the effect of temperature on the coal–gas interactions in CSG extraction is still not clear. In this study, a thermo-hydro-mechanical model was developed considering the expansion of coal mass and the change of adsorption capacity induced by heat injection. Subsequently, the reliability of the model was verified through a comparison with other theoretical models and field data. Finally, a numerical simulation and parameter analysis of the heat injection process were performed and compared with the traditional gas extraction method. The simulation results show that heat injection can significantly increase the gas production rate and cumulative gas production through the gas desorption and the permeability increase. The gas content in the coal seam dramatically decreases in the vicinity of the production and heat injection wells under the condition of heat injection, which greatly accelerates the gas drainage. The coal deformation caused by thermal-induced gas desorption has a more dominant effect on the porosity than other factors, i.e., pore pressure, thermal strain and compressive strain.

Suggested Citation

  • Yi Xue & Faning Dang & Zhengzheng Cao & Feng Du & Fei Liu & Jie Ren & Feng Gao, 2018. "Numerical Analysis of Heat and Gas Transfer Characteristics during Heat Injection Processes Based on a Thermo-Hydro-Mechanical Model," Energies, MDPI, vol. 11(7), pages 1-20, July.
  • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1722-:d:155541
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/11/7/1722/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/11/7/1722/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Sheng-Qi Yang & Bo Hu & Pathegama G. Ranjith & Peng Xu, 2018. "Multi-Step Loading Creep Behavior of Red Sandstone after Thermal Treatments and a Creep Damage Model," Energies, MDPI, vol. 11(1), pages 1-26, January.
    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. Yi Xue & Faning Dang & Zhengzheng Cao & Feng Du & Jie Ren & Xu Chang & Feng Gao, 2018. "Deformation, Permeability and Acoustic Emission Characteristics of Coal Masses under Mining-Induced Stress Paths," Energies, MDPI, vol. 11(9), pages 1-18, August.
    2. Yi Xue & Zhengzheng Cao & Feng Du & Lin Zhu, 2018. "The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion," Sustainability, MDPI, vol. 10(8), pages 1-21, July.

    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. Yang, Fujian & Wang, Guiling & Hu, Dawei & Liu, Yanguang & Zhou, Hui & Tan, Xianfeng, 2021. "Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite," Renewable Energy, Elsevier, vol. 168(C), pages 544-558.
    2. Xiaopeng Ren & Yajun Xin & Baoshan Jia & Kun Gao & Xuping Li & Yu Wang, 2022. "Large Stress-Gradient Creep Tests and Model Establishment for Red Sandstone Treated at High Temperatures," Energies, MDPI, vol. 15(20), pages 1-19, October.
    3. Tong, Huidong & Chen, Youliang & Chen, Qijian & Du, Xi & Xiao, Peng & Wang, Suran & Dong, Yang & Pan, Yungui & Ma, Hao & Long, Zhiyu, 2023. "A true triaxial creep constitutive model of rock considering the coupled thermo-mechanical damage," Energy, Elsevier, vol. 285(C).

    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:gam:jeners:v:11:y:2018:i:7:p:1722-:d:155541. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.