岩石热导率影响因素研究进展  

Progress in the study of the influencing factors of rock thermal conductivity

作　　者：陈驰 朱传庆[1,2] 唐博宁 陈天戈 CHEN Chi;ZHU Chuan-qing;TANG Bo-ning;CHEN Tian-ge(State Key Laboratory of Oil and Gas Resources and Exploration,China University of Petroleum,Beijing 102249,China;School of Earth Sciences,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)地球科学学院,北京102249

出　　处：《地球物理学进展》2020年第6期2047-2057,共11页Progress in Geophysics

基　　金：国家重点研发计划课题(2018YFC0604302);国家科技重大专项课题(2017ZX05008-004);国家自然科学基金(41772248)联合资助。

摘　　要：岩石热导率是岩石最重要的热物理性质之一,其影响因素也比其他热物理性质更为多样.本文综述了前人对岩石热导率影响因素的研究和认识,并对当前研究存在的问题以及研究的发展趋势进行了总结和展望.影响岩石热导率的因素可系统地归纳为岩石组构、温度、压力三个方面.岩石组构是影响岩石热导率的内在因素,对岩石热导率的影响有决定性的作用.岩石组构从岩石的组分和构型两个方面影响岩石热导率,岩石组分是热导率影响的首要因素,而构型对岩石热导率的影响较为复杂.温度和压力是影响岩石热导率的主要外在因素.一般情况下,岩石热导率随着温度升高而减少,随着压力增大而增大.组分热导率的估值精度、内部组构的模型准确度以及温压实验结果的机理认识等制约了对岩石热导率影响因素的定量化认识.随着实验技术精度的提高和计算机仿真模拟技术的发展,将高精度高温高压实验测试和数值模拟结合进行综合分析是未来研究岩石热导率的发展趋势.Effective Thermal Conductivity(ETC) is the most important thermophysical properties of rock, and it is considered multiple internal and external factors affect it. This paper systematically summarized the previous studies on the influence factors of rock thermal conductivity, concluded the problems of the previous works and the progress trend. Fabric of rock, temperature, and pressure are the three preponderant factors on the rock thermal conductivity. Fabric, the internal factor, includes both composition and texture of rock, is the controlling factor on rock’s thermal conductivity. Compare to the composition of rock, texture influences rock’s thermal conductivity in a relative complex way. Temperature and pressure are the two main external factors on thermal conductivity of rock. Generally, thermal conductivity has a positive correlation with pressure, but a negative one with temperature. Accurate quantitative understanding on the influencing factors of rock thermal conductivity has been limited by many reasons: the accuracy of the thermal conductivity evaluation for the components of rock, the degree of fitting between the real texture of rock and the calculation model and even the mechanism of the correlation between the thermal conductivity and temperature or pressure. With the improvement of experimental analysis and computer simulation technology, high pressure and high temperature experiment and numerical modeling will be jointly adopted into the study of the influencing factors of rock thermal conductivity.

关 键 词：热导率 岩石组构 岩石成分 岩石结构 温度 压力 

分 类 号：P314[天文地球—固体地球物理学]