干热岩地应力测量评价方法与前沿挑战  

An Overview of the Measurement and Evaluation Methods of In-situ Stress and Its Frontier Challenges in Hot Dry Rock

作　　者：许家鼎 张重远[1,2] 缑艳红 高万里 何满潮[2] 陈群策[1] 秦向辉[1] 李少辉[1,2] 孙东生 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(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081;School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083;Geological Research Institute,China Petroleum Logging Co.Ltd.,Xi’an,Shaanxi 710200)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]中国矿业大学(北京)力学与建筑学院,北京100083 [3]中国石油集团测井有限公司地质研究院,陕西西安710200

出　　处：《地球学报》2023年第1期200-210,共11页Acta Geoscientica Sinica

基　　金：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)联合资助。

摘　　要：可靠的地应力数据能够指导开发干热岩资源。本文针对干热岩深部储层地应力调查存在的困难,按照基于钻孔、岩芯和地质的三类调查手段,首先总结提出了适用于干热岩地应力测量与评价的方法,并指出了其基本原理、测试仪器、应用场景与存在的优缺点。然后,以我国青海共和干热岩试采工程为例,提出了干热岩地应力测量与评价模式,给出了储层地应力特征的主要认识,并验证其与工程开发结果的一致性。最后,总结了干热岩地应力测量方法的认识,指出了干热岩开发中与地应力相关的两大前沿科学问题,即储层裂缝控制与诱发地震,并对其发展趋势与挑战进行了展望。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.

关 键 词：干热岩 地应力测量 评价方法 水力压裂 储层建造 诱发地震 

分 类 号：P314[天文地球—固体地球物理学]