论文部分内容阅读
在数字岩石物理中数字岩心是弹性参数模拟的基础,现有的数字岩心建模方法虽然较多,但一般不能满足弹性参数模拟对骨架所提出的要求.过程法以岩石粒径分布曲线为约束条件构建数字岩心,是一种比较灵活的数字岩心建模方法.本文根据前人研究结果在过程法的压实过程中用一面状像素层表示颗粒与颗粒间的接触边界,使相邻的骨架颗粒能够相互区分,提高了数字岩心骨架结构的精细程度.在弹性参数模拟中,当变化数字岩心中的颗粒、颗粒接触边界和胶结物的弹性模量时,数字岩心的弹性模量发生相应的变化.数字岩心弹性模量的变化量与组成物质的体积含量及其弹性模量赋值有关.这说明能够利用数字岩石物理研究各种地质和环境因素对岩石弹性性质的影响.进一步分析认为,目前的建模方法对数字岩心的定义还不够充分,利用数字岩石物理解决实际地质问题尚有难度.
In digital rock physics, digital cores are the basis of elastic parameter simulation. Although there are many existing numerical core modeling methods, they generally can not meet the requirements of the framework for elastic parameter simulation. The process method is constrained by the rock particle size distribution curve Conditions to build digital cores is a more flexible method of digital core modeling.Based on the results of previous studies, we use a pixel-like layer to represent the contact boundary between particles and particles in the process of compaction of process method, Particles can be distinguished from each other and improve the fineness of the digital core skeleton structure. In elastic parameter simulation, when the elastic modulus of particles, particles contact boundary and cement in the digital core are changed, Change.The numerical variation of elastic modulus of digital core is related to the volume content of the constituent materials and the assignment of elastic modulus.This shows that digital geophysics can be used to study the influence of various geological and environmental factors on the elastic properties of rocks.According to the further analysis, The modeling approach to digital cores is not sufficiently defined, using digital rock physics to solve real geological problems Still difficult.