IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v16y2023i17p6229-d1226531.html
   My bibliography  Save this article

Reactive Transport Modeling of Chemical Stimulation Processes for an Enhanced Geothermal System (EGS)

Author

Listed:
  • Li Ma

    (Mudanjiang Natural Resources Comprehensive Survey Center of China Geological Survey, Mudanjiang 157021, China)

  • Zhenpeng Cui

    (Engineering Research Center of Geothermal Resources Development Technology and Equipment, Ministry of Education, Jilin University, Changchun 130026, China)

  • Bo Feng

    (Engineering Research Center of Geothermal Resources Development Technology and Equipment, Ministry of Education, Jilin University, Changchun 130026, China)

  • Xiaofei Qi

    (No. 2 Exploration Team Hebei Bureau of Coal Geological Exploration, Xingtai 054001, China)

  • Yuandong Zhao

    (Mudanjiang Natural Resources Comprehensive Survey Center of China Geological Survey, Mudanjiang 157021, China)

  • Chaoyu Zhang

    (Chinese Academy of Natural Resources Economics, Beijing100035, China)

Abstract

An enhanced geothermal system is a kind of artificial geothermal system, which can economically exploit geothermal energy from deep thermal rock mass with low permeability by artificially created geothermal reservoirs. Chemical stimulation refers to a reservoir permeability enhancement method that injects a chemical stimulant into the fractured geothermal reservoir to improve the formation permeability by dissolving minerals. In this study, a reactive solute transport model was established based on TOUGHREACT to find out the effect of chemical stimulation on the reconstruction of a granite-hosted enhanced geothermal system reservoir. The results show that chemical stimulation with mud acid as a stimulant can effectively improve the permeability of fractures near the injection well, the effective penetration distance can reach more than 20 m after 5 days. The improvement of porosity and permeability was mainly caused by the dissolution of feldspar and chlorite. The permeability enhancement increased with the injection flow rate and HF concentration in the stimulant, which was weakly affected by the change in injection temperature. The method of chemical enhancement processes can provide a reference for subsequent enhanced geothermal system engineering designs.

Suggested Citation

  • Li Ma & Zhenpeng Cui & Bo Feng & Xiaofei Qi & Yuandong Zhao & Chaoyu Zhang, 2023. "Reactive Transport Modeling of Chemical Stimulation Processes for an Enhanced Geothermal System (EGS)," Energies, MDPI, vol. 16(17), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6229-:d:1226531
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/16/17/6229/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/16/17/6229/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Feng, Guanhong & Xu, Tianfu & Zhao, Yue'an & Gherardi, Fabrizio, 2022. "Heat mining from super-hot horizons of the Larderello geothermal field, Italy," Renewable Energy, Elsevier, vol. 197(C), pages 371-383.
    2. Luo, Jin & Zhu, Yongqiang & Guo, Qinghai & Tan, Long & Zhuang, Yaqin & Liu, Mingliang & Zhang, Canhai & Zhu, Mingcheng & Xiang, Wei, 2018. "Chemical stimulation on the hydraulic properties of artificially fractured granite for enhanced geothermal system," Energy, Elsevier, vol. 142(C), pages 754-764.
    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. Ge, Zhaolong & Zhang, Hongwei & Zhou, Zhe & Cao, Shirong & Zhang, Di & Liu, Xiangjie & Tian, Chao, 2023. "Experimental study on the characteristics and mechanism of high-pressure water jet fracturing in high-temperature hard rocks," Energy, Elsevier, vol. 270(C).
    2. Zhao, Liqiang & Chen, Yixin & Du, Juan & Liu, Pingli & Li, Nianyin & Luo, Zhifeng & Zhang, Chencheng & Huang, Fushan, 2019. "Experimental Study on a new type of self-propping fracturing technology," Energy, Elsevier, vol. 183(C), pages 249-261.
    3. Sun, Fengrui & Yao, Yuedong & Li, Guozhen & Li, Xiangfang, 2018. "Geothermal energy extraction in CO2 rich basin using abandoned horizontal wells," Energy, Elsevier, vol. 158(C), pages 760-773.
    4. Yang, Ruiyue & Hong, Chunyang & Liu, Wei & Wu, Xiaoguang & Wang, Tianyu & Huang, Zhongwei, 2021. "Non-contaminating cryogenic fluid access to high-temperature resources: Liquid nitrogen fracturing in a lab-scale Enhanced Geothermal System," Renewable Energy, Elsevier, vol. 165(P1), pages 125-138.
    5. Yin, Weitao & Zhao, Yangsheng & Feng, Zijun, 2019. "Experimental research on the rupture characteristics of fractures subsequently filled by magma and hydrothermal fluid in hot dry rock," Renewable Energy, Elsevier, vol. 139(C), pages 71-79.
    6. Yixin Chen & Yu Sang & Jianchun Guo & Jian Yang & Weihua Chen & Fei Liu & Ji Zeng & Botao Tang, 2022. "Synthesis and Characterization of a Novel Self-Generated Proppant Fracturing Fluid System," Energies, MDPI, vol. 15(22), pages 1-21, November.
    7. Asai, Pranay & Panja, Palash & McLennan, John & Deo, Milind, 2019. "Effect of different flow schemes on heat recovery from Enhanced Geothermal Systems (EGS)," Energy, Elsevier, vol. 175(C), pages 667-676.

    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:16:y:2023:i:17:p:6229-:d:1226531. 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.