Introdução ao modelo de rocha digital utilizando o Dragonfly 3D

Abstract

This work presents the construction of a three-dimensional digital rock model, developed from micro-CT images processed using the Dragonfly 3D software. The methodology included steps such as importing, segmenting, and analyzing images, with special focus on using the Otsu method to define the solid and porous phases. Masks were created to distinguish connected and non-connected pores, allowing the calculation of the sample's total porosity (23.43%), as well as effective porosity (23.37%) and non-effective porosity (0.05%). The analysis of the representative elementary volume (REV) showed that the porosity distribution in the sample is homogeneous, with minimal variations across the subdivisions. The 3D model provided a detailed and precise visualization of the sample's internal structure, helping to characterize petrophysical properties. The results indicate that combining CT with digital image processing is an effective tool for studying the microstructure of artificial rocks in detail.