Optimizing high-temperature geothermal extraction through THM coupling: insights from SC-CO2 enhanced modeling

IF 1.5 4区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
GuoLong Zhang
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引用次数: 0

Abstract

Purpose

This study investigates the coupling effects between temperature, permeability and stress fields during the development of geothermal reservoirs, comparing the impacts of inter-well pressure differentials, reservoir temperature and heat extraction fluid on geothermal extraction.

Design/methodology/approach

This study employs theoretical analysis and numerical simulation to explore the coupling mechanisms of temperature, permeability and stress fields in a geothermal reservoir using a thermal-hydrological-mechanical (THM) three-field coupling model.

Findings

The results reveal that the pressure differential between wells significantly impacts geothermal extraction capacity, with SC-CO2 achieving 1.83 times the capacity of water. Increasing the aperture of hydraulic and natural fractures effectively enhances geothermal production, with a notable enhancement for natural fractures.

Originality/value

The research provides a critical theoretical foundation for understanding THM coupling mechanisms in geothermal extraction, supporting the optimization of geothermal resource development and utilization.

通过 THM 耦合优化高温地热提取:SC-CO2 增强建模的启示
目的 本研究探讨了地热储层开发过程中温度场、渗透率场和应力场之间的耦合效应,比较了井间压差、储层温度和采热液对地热开采的影响。本研究采用理论分析和数值模拟,利用热-水文-力学(THM)三场耦合模型,探讨地热储层中温度场、渗透率场和应力场的耦合机制。研究结果表明,井间压差对地热开采能力有显著影响,SC-CO2 的开采能力是水的 1.83 倍。增加水力裂缝和天然裂缝的孔径可有效提高地热产量,其中天然裂缝的提高尤为明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Engineering Computations
Engineering Computations 工程技术-工程:综合
CiteScore
3.40
自引率
6.20%
发文量
61
审稿时长
5 months
期刊介绍: The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm
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