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Numerical simulation of electricity generation potential from fractured granite reservoir through vertical wells at Yangbajing geothermal field

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  • Zeng, Yu-chao
  • Zhan, Jie-min
  • Wu, Neng-you
  • Luo, Ying-ying
  • Cai, Wen-hao

Abstract

Yangbajing geothermal field is the first high-temperature hydrothermal convective geothermal system in China. Research and development of the deep fractured granite reservoir is of great importance for capacity expanding and sustaining of the ground power plant. The geological exploration found that there is a fractured granite heat reservoir at depth of 950–1350 m in well ZK4001 in the north of the geothermal field, with an average temperature of 248 °C and a pressure of 8.01–11.57 MPa. In this work, electricity generation potential and its dependent factors from this fractured granite reservoir by water circulating through vertical wells are numerically investigated. The results indicate that the vertical well system attains an electric power of 16.8–14.7 MW, a reservoir impedance of 0.29–0.46 MPa/(kg/s) and an energy efficiency of about 29.6–12.8 during an exploiting period of 50 years under reference conditions, showing good heat production performance. The main parameters affecting the electric power are water production rate and injection temperature. The main parameters affecting reservoir impedance are reservoir permeability, injection temperature and water production rate. The main parameters affecting the energy efficiency are reservoir permeability, injection temperature and water production rate. Higher reservoir permeability or more reasonable injection temperature or water production rate within certain ranges will be favorable for improving the electricity generation performance.

Suggested Citation

  • Zeng, Yu-chao & Zhan, Jie-min & Wu, Neng-you & Luo, Ying-ying & Cai, Wen-hao, 2016. "Numerical simulation of electricity generation potential from fractured granite reservoir through vertical wells at Yangbajing geothermal field," Energy, Elsevier, vol. 103(C), pages 290-304.
    • Handle: RePEc:eee:energy:v:103:y:2016:i:c:p:290-304
    DOI: 10.1016/j.energy.2016.02.123
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    Cited by:

    1. Feng, Chenchen & Wang, Huaijiu & Jing, Zefeng, 2021. "Investigation of heat extraction with flowing CO2 from hot dry rock by numerical study," Renewable Energy, Elsevier, vol. 169(C), pages 242-253.
    2. Xu, Tianfu & Yuan, Yilong & Jia, Xiaofeng & Lei, Yude & Li, Shengtao & Feng, Bo & Hou, Zhaoyun & Jiang, Zhenjiao, 2018. "Prospects of power generation from an enhanced geothermal system by water circulation through two horizontal wells: A case study in the Gonghe Basin, Qinghai Province, China," Energy, Elsevier, vol. 148(C), pages 196-207.
    3. Ma, Yuanyuan & Li, Shibin & Zhang, Ligang & Liu, Songze & Liu, Zhaoyi & Li, Hao & Shi, Erxiu & Liu, Xuemei & Liu, Hongliang, 2020. "Analysis on the heat extraction performance of multi-well injection enhanced geothermal system based on leaf-like bifurcated fracture networks," Energy, Elsevier, vol. 213(C).
    4. Lei, Zhihong & Zhang, Yanjun & Yu, Ziwang & Hu, Zhongjun & Li, Liangzhen & Zhang, Senqi & Fu, Lei & Zhou, Ling & Xie, Yangyang, 2019. "Exploratory research into the enhanced geothermal system power generation project: The Qiabuqia geothermal field, Northwest China," Renewable Energy, Elsevier, vol. 139(C), pages 52-70.
    5. Yi Yang & Guoqiang Fu & Jingtao Zhao & Lei Gu, 2023. "Heat Production Capacity Simulation and Parameter Sensitivity Analysis in the Process of Thermal Reservoir Development," Energies, MDPI, vol. 16(21), pages 1-27, October.
    6. Yu Wang & Tianfu Xu & Yuxiang Cheng & Guanhong Feng, 2022. "Prospects for Power Generation of the Doublet Supercritical Geothermal System in Reykjanes Geothermal Field, Iceland," Energies, MDPI, vol. 15(22), pages 1-15, November.
    7. Zhai, Haizhen & Jin, Guangrong & Liu, Lihua & Su, Zheng & Zeng, Yuchao & Liu, Jie & Li, Guangyu & Feng, Chuangji & Wu, Nengyou, 2023. "Parametric study of the geothermal exploitation performance from a HDR reservoir through multilateral horizontal wells: The Qiabuqia geothermal area, Gonghe Basin," Energy, Elsevier, vol. 275(C).
    8. Liao, Youqiang & Sun, Xiaohui & Sun, Baojiang & Wang, Zhiyuan & Wang, Jintang & Wang, Xuerui, 2021. "Geothermal exploitation and electricity generation from multibranch U-shaped well–enhanced geothermal system," Renewable Energy, Elsevier, vol. 163(C), pages 2178-2189.
    9. Gong, Facheng & Guo, Tiankui & Sun, Wei & Li, Zhaomin & Yang, Bin & Chen, Yimei & Qu, Zhanqing, 2020. "Evaluation of geothermal energy extraction in Enhanced Geothermal System (EGS) with multiple fracturing horizontal wells (MFHW)," Renewable Energy, Elsevier, vol. 151(C), pages 1339-1351.
    10. Chen, Tairu & Liu, Gang & Liao, Shengming, 2019. "Impacts of boundary conditions on reservoir numerical simulation and performance prediction of enhanced geothermal systems," Energy, Elsevier, vol. 181(C), pages 202-213.
    11. Muhammad Haris & Michael Z. Hou & Wentao Feng & Jiashun Luo & Muhammad Khurram Zahoor & Jianxing Liao, 2020. "Investigative Coupled Thermo-Hydro-Mechanical Modelling Approach for Geothermal Heat Extraction through Multistage Hydraulic Fracturing from Hot Geothermal Sedimentary Systems," Energies, MDPI, vol. 13(13), pages 1-21, July.
    12. Liang, Xu & Xu, Tianfu & Feng, Bo & Jiang, Zhenjiao, 2018. "Optimization of heat extraction strategies in fault-controlled hydro-geothermal reservoirs," Energy, Elsevier, vol. 164(C), pages 853-870.
    13. Hou, Xinglan & Zhong, Xiuping & Nie, Shuaishuai & Wang, Yafei & Tu, Guigang & Ma, Yingrui & Liu, Kunyan & Chen, Chen, 2023. "Numerical simulation study of intermittent heat extraction from hot dry rock using horizontal well based on thermal compensation," Energy, Elsevier, vol. 272(C).
    14. Zhang, Yu & Zhang, Yanjun & Zhou, Ling & Lei, Zhihong & Guo, Liangliang & Zhou, Jian, 2022. "Reservoir stimulation design and evaluation of heat exploitation of a two-horizontal-well enhanced geothermal system (EGS) in the Zhacang geothermal field, Northwest China," Renewable Energy, Elsevier, vol. 183(C), pages 330-350.
    15. Aliyu, Musa D. & Chen, Hua-Peng, 2018. "Enhanced geothermal system modelling with multiple pore media: Thermo-hydraulic coupled processes," Energy, Elsevier, vol. 165(PA), pages 931-948.
    16. Yuchao Zeng & Liansheng Tang & Nengyou Wu & Jing Song & Yifei Cao, 2017. "Orthogonal Test Analysis on Conditions Affecting Electricity Generation Performance of an Enhanced Geothermal System at Yangbajing Geothermal Field," Energies, MDPI, vol. 10(12), pages 1-17, December.

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