| 干热岩地应力测量评价方法与前沿挑战 |
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| 关键词:hot dry rock (HDR) in-situ stress measurement evaluation method hydraulic fracturing reservoir development induced earthquake |
| 基金项目:中国地质调查局地质调查项目(编号: DD20190138; DD20221660);国家自然科学基金项目(编号: 42177175);中国地质科学院地质力学研究所基本科研业务费项目(编号: DZLXJK202204) |
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| 摘要: |
| An Overview of the Measurement and Evaluation Methods of In-situ Stress and Its Frontier Challenges in Hot Dry Rock |
| Reliable in-situ stress data can guide the development of hot dry rock (HDR) resources. In view of the difficulties involved in investigation of in-situ stress in deep reservoirs of HDR, this study summarizes and puts forward three types of investigation methods suitable for in-situ stress measurement and evaluation in HDR, based on borehole, core, and geology, and points out their basic principles, test instruments, application scenarios and advantages and disadvantages. Additionally, the HDR in-situ stress measurement and evaluation model is proposed taking the Gonghe HDR project in Qinghai, China, as an example. The main conclusions of the in-situ stress feature are shown, and its consistency with the result of hydraulic fracturing is verified. Subsequently, two frontier scientific issues related to in-situ stress in HDR development, namely reservoir fracture control and induced earthquake, are pointed out. Finally, the understanding of the in-situ stress measurement method of HDR is summarized, and its development trend and challenges are also assessed. |
| XU Jia-ding,ZHANG Chong-yuan,GOU Yan-hong,GAO Wan-li,HE Man-chao,CHEN Qun-ce,QIN Xiang-hui,LI Shao-hui,SUN Dong-sheng.2023.An Overview of the Measurement and Evaluation Methods of In-situ Stress and Its Frontier Challenges in Hot Dry Rock[J].Acta Geoscientica Sinica,44(1):200-210. |
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