Investigation of thermo-hydro-mechanical processes in deep crystalline rock - experiments and numerical modeling

深层结晶岩石中的热水机械过程研究 - 实验和数值模拟

• 批准号: 5365299
• 负责人: Professor Dr. Christopher McDermott
• 金额: --
• 依托单位: Stadtwerke Bad Urach
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5365299?language=en
• 关键词: Investigation; thermo; hydro; mechanical; processes

Quantification of thermal, hydraulic and geomechanic, probably coupled, processes is very important for the understanding and characterization of natural as well as man-made processes in geosystems. The general target of this project is twofold: The analysis of processe in deep crystalline rock by employing computer modeling and experimental techniques. Modeling techniques will be used for experimental design as well as the general analysis of the flow, transport and deformation processes and finally for long-term preditions of geothermal reservoir behavior. In particular we are interested in the impact of thermo-hydromechanical processes at the reservoir scale (e.g. consolidation during hydraulic testing and thermo-mechanical effects). The modeling approach is holistic i.e. it includes thermal (RFHTM), hydraulic (RF-SM) and mechanical (RM-DM) simulation components. The software development is based on the own object-oriented computer system RockFlow/ RockMech (RF/RM). The experimental program comprises tracer tests (heat and reactive tracer) and later on hydraulic stimulation tests. The tracer experiments are intended for a quantitative characterization of the hydraulically active fracture system. Stimulation tests will be conducted to improve the hydraulic permeability in deep rocks, finally, to increase the potential for geothermal energy utilization. The holistic model approach is accessible to other work groups, who can use all available data to re-calibrate and compare models and to improve its predictability. Within this project it is intended to develop a modeling and experimental technology that will be useable for the investigation of other geothermal sites (e.g. Urach), too.

量化热，液压和地球力学的量化可能是耦合的，对于理解和表征自然和人造过程非常重要。该项目的一般目标是双重的：通过采用计算机建模和实验技术，深层结晶岩中的过程分析。建模技术将用于实验设计以及对流，传输和变形过程的一般分析，最后用于地热储层行为的长期预期。特别是我们对储层量表的热融化过程的影响感兴趣（例如，在液压测试和热机械效应期间的巩固）。建模方法是整体的，即包括热（RFHTM），液压（RF-SM）和机械（RM-DM）模拟组件。该软件开发基于自己面向对象的计算机系统Rockflow/ Rockmech（RF/ RM）。实验程序包括示踪剂测试（热和反应性示踪剂），然后在液压刺激测试中进行。示踪剂实验旨在定量表征液压活性断裂系统。最终，将进行刺激测试，以提高深岩石中的水力通透性，以增加地热能利用的潜力。其他工作组可以访问整体模型方法，他们可以使用所有可用数据重新校准和比较模型并提高其可预测性。在该项目中，它旨在开发一种建模和实验技术，该技术也可用于研究其他地热站点（例如Urach）。