中深层地热井换热数学模型研究

Research of Mathematical Models for Heat Exchange in Medium-Deep Geothermal Wells

摘要: 本文聚焦中深层地热井换热数学模型的研究，在传热过程分析的基础上做出合理假设以简化模型，建立了井孔内和井孔外的传热数学模型，其中井孔内模型考虑不同流体流动方式，井孔外模型则提出有限长圆柱热源模型，以更准确地反映地热井传热实际，为地热井传热性能预测和优化设计提供了理论支撑。

Abstract: This paper focuses on the research of heat exchange mathematical models for Medium-deep geothermal wells. Based on the analysis of the heat transfer process, reasonable assumptions are made to simplify the model. Heat transfer mathematical models for both inside and outside the wellbore are established. The model for inside the wellbore considers different fluid flow patterns, while the model for outside the wellbore proposes a finite-length cylindrical heat source model to more accurately reflect the actual heat transfer in geothermal wells. This study provides theoretical support for the prediction and optimization design of geothermal well heat transfer performance.