M.R. Setiawan, Suharsono, W. Hidayat, Fatkhan, F.D.E. Latief, U. Fauzi
Rocks are composed of diverse materials, rendering them inherently complex. Numerous factors influence their mechanical and elastic properties. A diabase core was drilled and prepared for characterization and analysis in this study. This research aims to investigate the rock's elastic properties using digital rock physics, leveraging mineralogical analysis conducted through XRD. Moreover, the process of separating matrix and pores will impact numerical calculations. Therefore, in this study, numerical calculations were performed on single and multiphase matrices to understand the influence of minerals on the elastic modulus of diabase rock. Characterization results indicate that the sample consists of Albite Calcian (Anorthic), Clinopyroxene, and Natrolite. These three minerals can be distinguished in digital image processing based on differences in density values. Numerical calculations reveal that an increase in the quantity of Clinopyroxene enhances static P-wave velocity. So, multiphase approach calculations yield velocity values almost identical to those obtained in the single-phase model with Albite Calcian matrix. © 2024 Institute of Physics Publishing. All rights reserved.
Physics of Earth and Complex Systems, Institut Teknologi Bandung, Bandung, 40132, Indonesia; Institut Teknologi Bandung, Bandung, 40132, Indonesia; Physics Department, Institut Teknologi Sumatera, South Lampung, Lampung, 35365, Indonesia; Geophysical Engineering Department, UPN Veteran Yogyakarta, Indonesia