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Multi-index-weighted geothermometer estimation of geothermal reservoir temperature: Applications and future directions

Author

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  • Meng, Fanao
  • Liang, Xiujuan
  • Xiao, Changlai
  • Wang, Ge

Abstract

Geothermal reservoir temperature (GRT) is an important factor for estimation of geothermal resources and exploitative potential. Errors in the estimated temperature of a geothermal reservoir can likely result from the use of a single geothermometer or the average. Therefore, there is an urgent need for novel and more accurate methods for estimating GRT. Taking Yitong Basin, China as the study area, this study collected water samples and measured the geothermal water temperature of 26 geothermal wells. After application of the improved entropy method (IEM) to the collected data, a multi-index weighted geothermometer (MIWG) was proposed. The MIWG provided the most accurate estimation of temperature, with average errors in temperature estimation for quartz, chalcedony, Na–K, K–Mg, and MIWG of 57.58 %, 15.86 %, 29.92 %, 42.03 %, and 11.94 %, respectively. This novel approach to estimating GRT has clear advantages, including wide applicability, and can provide a new pathway for future related research.

Suggested Citation

  • Meng, Fanao & Liang, Xiujuan & Xiao, Changlai & Wang, Ge, 2024. "Multi-index-weighted geothermometer estimation of geothermal reservoir temperature: Applications and future directions," Renewable Energy, Elsevier, vol. 221(C).
    • Handle: RePEc:eee:renene:v:221:y:2024:i:c:s096014812301707x
    DOI: 10.1016/j.renene.2023.119792
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