关键词: 微观CT, 定量分析, 结构表征, 岩石物性参数, 大数据

Abstract: Microtomography provides digital images at microns or sub-micron resolution and enables the study of rock microstructures. Quantitative analyses of microtomographic data mainly include three parts: (1) characterizing rock microstructures; (2) determining representative volume element (RVE) size and pore-scale fluid simulation for extracting fluid transport properties; and (3) determining mechanical RVE size and extracting mechanical properties. Here, we briefly introduced the implementing schemes of quantitative analyses of microtomography, using visualization methods to assistant data analyses. We analyzed three typical samples—a mylonite, a synthetic sandstone and a carbonate sample-to illustrate the procedure and validity of our method. Microtomographic data are voluminous, vary at different processing stages, and contain plentiful yet specific information, thus they are important components of geoscience big-data.

Key words: microtomography, quantitative analysis, structure characterization, petrophysics, big-data