过程法模拟构建数字岩心  

Construction of Digital Core by Process Simulation

作　　者：罗加荣 Luo Jiarong(SGIDI Engineering Consulting Group Co., LTD, Shanghai 200093, China)

机构地区：[1]上海勘察设计研究院集团有限公司,上海200093

出　　处：《工程地球物理学报》2021年第1期147-152,共6页Chinese Journal of Engineering Geophysics

摘　　要：为便于对岩石微观结构分析研究以及岩石孔隙度进行模拟计算,采用过程法模拟数字岩心。过程模拟法通过模拟岩石沉积过程建立数字岩心,在岩石开始沉积时,通过获得的随机数,从粒径累计概率分布上选择对应的颗粒半径,岩石颗粒沿势能下降最快的方向下落,每次下落前,将已沉积的颗粒扩大半径并形成一个膨胀曲面,判断岩石下落方向附近曲面上相对势能最低点作为沉积稳定位置,从而编制了过程法构建数字岩心的程序,实现了数字岩心的可视化,可为岩心特征统计分析提参考模型。In order to analyze and study the microstructure of rock and simulate calculation of the rock porosity,the process method is used to simulate the digital core.In the process simulation method,the digital core is established by simulating the process of rock deposition.When the rock begins to deposit,the corresponding particle radius is selected from the cumulative probability distribution of particle size.The rock grains fall along the direction where the potential energy drops fastest.Before each rock falls,the radius of deposited grains is expanded to form an expansion curved surface to take the relatively lowest point of the potential energy on the curved surface near the falling direction of the rock as the stable position of deposition.Therefore,the program of constructing digital core by process method is compiled,and the visualization of digital core is realized.It can improve the reference model for statistical analysis of core characteristics.

关 键 词：过程模拟法 数字岩心 孔隙度 

分 类 号：P631[天文地球—地质矿产勘探]