用于天然裂缝地热储层能量提取的全耦合热弹性模型:敏感性分析和流动模拟

IF 2.9 2区 地球科学 Q3 ENERGY & FUELS
Reda Abdel Azim, Saad Alatefi, Abdulrahman Aljehani
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引用次数: 0

摘要

开发一种新方法来模拟天然断裂地热储层中的流体流动和热传递,是地热能源研究的一大进步。本研究提出了一种混合方法,该方法结合了离散断裂和单一连续体技术,可有效捕捉地热断裂储层中流体流动和热传递之间复杂的相互作用。此外,采用局部热非平衡法模拟热传递时,考虑了岩石基体和流体之间的温度差,从而更真实地反映了热传递过程。该研究还提出了一个完全耦合的热-孔-弹性框架,将流体流动和热传递整合在一起,以全面评估储层对注水/生产方案的响应。通过这种耦合方法,可以预测不同流体压力和温度条件下储层属性(如渗透率和孔隙度)的变化。应用所提出的模型来评估地热储层对注入/生产方案的长期响应,可为了解储层的行为和潜在的能源生产能力提供有价值的见解。敏感性分析通过确定对储层热耗竭有重大影响的关键储层参数,进一步提高了模型的实用性。总之,这种新颖的建模方法有望改善对天然裂缝地热储层的了解和管理,有助于优化地热能源开采战略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A fully coupled thermo-poroelastic model for energy extraction in naturally fractured geothermal reservoirs: sensitivity analysis and flow simulation

The development of a novel method for modelling fluid flow and heat transfer in naturally fractured geothermal reservoirs represents a significant advancement in geothermal energy research. This Study presents a hybrid approach, which combines discrete fracture and single continuum techniques, to effectively capture the complex interactions between fluid flow and heat transfer in geothermal fractured reservoirs. In addition, the incorporation of the local thermal nonequilibrium method for simulating heat transmission accounts for the disparities in temperature between the rock matrix and the fluid, providing a more realistic representation of heat transfer processes. The study also presents a fully coupled thermo-poro-elastic framework that integrates fluid flow and heat transfer to comprehensively evaluate reservoir responses to injection/production scenarios. This coupled approach allows for the prediction of changes in reservoir properties, such as permeability and porosity, under varying fluid pressure and temperature conditions. The application of the proposed model to evaluate a geothermal reservoir’s long-term response to injection/production scenarios provides valuable insights into the reservoir’s behaviour and potential energy production capacity. The sensitivity analysis further enhances the model’s utility by identifying the key reservoir parameters that significantly influence the thermal depletion of the reservoir. Overall, this novel modelling approach holds promise for improving the understanding and management of naturally fractured geothermal reservoirs, contributing to the optimization of geothermal energy extraction strategies.

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来源期刊
Geothermal Energy
Geothermal Energy Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology
CiteScore
5.90
自引率
7.10%
发文量
25
审稿时长
8 weeks
期刊介绍: Geothermal Energy is a peer-reviewed fully open access journal published under the SpringerOpen brand. It focuses on fundamental and applied research needed to deploy technologies for developing and integrating geothermal energy as one key element in the future energy portfolio. Contributions include geological, geophysical, and geochemical studies; exploration of geothermal fields; reservoir characterization and modeling; development of productivity-enhancing methods; and approaches to achieve robust and economic plant operation. Geothermal Energy serves to examine the interaction of individual system components while taking the whole process into account, from the development of the reservoir to the economic provision of geothermal energy.
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