干热岩储层改造技术研究进展

Progress in Research on Modification Technology of Hot Dry Rock Reservoir

干热岩型地热资源是地热资源的重要组成部分,作为一种清洁低碳、稳定连续的非碳基能源,其商业化开发可为实现“双碳”目标和优化我国能源结构提供重要保障。结合干热岩型地热资源的主要开发技术,明确增强型地热系统在干热岩开发中的重要性;分析高温岩石力学特性的研究成果,阐明热储改造过程中水力裂缝复杂扩展行为的产生原因;基于目前干热岩型地热资源的主要开发方式,探讨目前增强型地热系统建储过程中的主要技术瓶颈及压裂工艺和监测技术的发展趋势。为相关的工程技术和研究人员提供参考。

The hot dry rock type geothermal resource is an important component of the geothermal resource.As a clean,low-carbon,stable and continuous non-carbon-based energy source,the commercial development of the hot dry rock geothermal resource can provide an important guarantee for achieving the goal of"double carbon"and optimizing the energy structure of China.Combing the main development technologies of dry thermal resources,it makes clear the importance of enhanced geothermal systems in the development of hot dry rock,analyzes the research results on the mechanical properties of high-temperature rocks,and explains the causes of the complex extension behaviour of hydraulic fractures in the process of modification.Based on the current main development way of hot dry rock type geothermal resources,the main technical bottlenecks in the current enhanced geothermal system storage construction process and the development trend of fracturing process and monitoring technology are discussed to provide a reference for relevant engineering technicians and researchers.