COMPREHENSIVE ASSESSMENT OF EVOLUTION OF GEOTHERMAL EXPLOITATION EFFICIENCY IN COALFIELDS CAUSED BY MICRO-MACRO INTERACTIONS

Han Dong; Yang Le; Wen Kai; Jiao Meili; Chen Fuguo; Gao Yongwei

doi:10.19912/j.0254-0096.tynxb.2024-1368

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (4) : 504-510. DOI: 10.19912/j.0254-0096.tynxb.2024-1368

COMPREHENSIVE ASSESSMENT OF EVOLUTION OF GEOTHERMAL EXPLOITATION EFFICIENCY IN COALFIELDS CAUSED BY MICRO-MACRO INTERACTIONS

Han Dong¹, Yang Le¹, Wen Kai¹, Jiao Meili², Chen Fuguo², Gao Yongwei²

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Abstract

This study proposes an interdisciplinary geothermal exploitation model. An improved fractal theory suitable for geothermal reservoirs is presented, utilizing two innovative fractal parameters （fractal dimension of fractures D_f and maximum length of fractures I_max） to quantitatively characterize fracture structures. The improved fractal theory is then applied to complex thermal-flow-solid coupling in geothermal reservoir exploitation. The research results demonstrate that the proposed structural parameters effectively characterize micro-macro interactions during geothermal exploitation. The efficiency of geothermal exploitation is directly proportional to the fractal dimension D_f and the maximum length of fractures I_max,while the geothermal rock temperature is also proportional to D_f and I_max.

Key words

geothermal exploitation / multi-field coupling / fracture structure / fractal theory / numerical simulation / exploitation efficiency

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Han Dong, Yang Le, Wen Kai, Jiao Meili, Chen Fuguo, Gao Yongwei. COMPREHENSIVE ASSESSMENT OF EVOLUTION OF GEOTHERMAL EXPLOITATION EFFICIENCY IN COALFIELDS CAUSED BY MICRO-MACRO INTERACTIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 504-510 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1368

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