数字岩石物理学及测井解释应用概论  

Digital Rock Physics and Its Progress in Log Interpretation

作　　者：谭茂金[1,2] TAN Maojin(School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China;Borehole Geophysical Detecting Branch,National Engineering Reasearch Center of Offshore Oil and Gas Exploration,Beijing 100083,China)

机构地区：[1]中国地质大学(北京)地球物理与信息技术学院,北京100083 [2]海洋油气勘探国家工程研究中心井筒探测技术分中心,北京100083

出　　处：《测井技术》2022年第4期371-379,共9页Well Logging Technology

基　　金：国家自然科学基金“井旁声波远探测三维成像与智能解释方法研究”(42174149);国家自然科学基金“有机页岩电学特性多尺度分析与测井解释新方法”(41774144);国家科技重大专项“碳酸盐岩不同缝洞储集体测井解释与井震关系研究”(2016ZX05014-001-007)。

摘　　要：数字岩石物理学是岩石物理学的一个新分支。数字岩石物理包括数字岩心构建、数值模拟、综合分析3个部分。数字岩心构建是数字岩石物理学的基础,为数值模拟提供高分辨率模型。数值模拟是数字岩石物理学的核心,基于数字岩心模型,利用有限元法、随机游走法等数值算法计算岩石电学、声学、输运和核磁共振弛豫等岩石物理参数。对数值模拟结果综合分析,可以研究电流传导、弹性波传播、流体渗流、核磁共振弛豫等岩石物理的响应机理、响应特征,还可以分析不同微观因素的影响规律,以及为地层评价提供模型等。系统阐述了数字岩石物理学在致密砂岩、页岩、碳酸盐岩、干热岩等地层评价中的应用,总结了数字岩石物理学的应用场景和应用条件,并展望了未来发展前景。研究表明,作为宏观岩石物理参数与微观因素之间的桥梁,数字岩石物理学是兼具理论岩石物理与实验岩石物理元素的新手段,必将发挥更大作用。Digital rock physics(DRP)is a new branch of rock physics.Digital rock physics includes core construction,numerical simulation,and integrated analysis.Digital core construction can provides the highresolution modes for pore-scale physical modelling.Based on the constructed digital core model,the numerical simulation uses finite element method,random walk method and other numerical algorithms to calculate rock physical parameters such as electrical,acoustic,transport and nuclear magnetic resonance relaxation.The comprehensive analysis of numerical simulation results can be used to study the response mechanism and characteristics of rock physics,such as current conduction,elastic wave propagation,fluid seepage and nuclear magnetic resonance relaxation,as well as to analyze the influence rules of different microscopic factors and provide models for formation evaluation of oil and gas reservoirs.The application progress of digital rock physics in tight sandstone,shale,carbonate,dry heating rock reservoirs are summarized.The application conductions are summarized and the future respect is pointed out.Therefore,as a bridge between macroscopic petrophysical parameters and microscopic factors,digital rock physics is a new method combining theoretical petrophysics and experimental petrophysics together,and must be promising in the future.

关 键 词：数字岩石物理 孔隙尺度数值模拟 物理机理 微观响应特征 影响规律 测井解释 

分 类 号：P631.84[天文地球—地质矿产勘探]