MICROSTRUCTURE CHARACTERISTIC ANALYSIS OF SANDSTONE MODEL BASED ON THE PARTIALLY AND FULLY PENETRABLE RANDOM GRAIN DEPOSITION

• Main Author: Anugerah N, Prayoga
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50496
• Institution: Institut Teknologi Bandung

Rock is a porous medium which composed of solid matrix, as well as empty spaces between solids known as pores. To understand its physical properties, in this final project research, a digital characterization approach (digital image analysis) is applied on the digital representation of sandstones generated from modeling. One of the parameters in the modeling used is the implementation of the compaction factor in the form of degrees of overlap. Models that explicitly implement this parameter is then referred to as partially penetrated random models. The modeling has been carried out and the image data has been characterized and analyzed using a statistical approach. In addition, comparisons to a fully penetrated random modeling method are also carried out. This study aims to determine the distribution pattern of the porosity to the degree of overlap and to analyze the characteristics of several parameters of the porous media structure generated through partial and fully penetrated random grain deposition-based models. In this study, the characteristics of the models are then compared with the characteristics of the digital image of the real sandstone samples obtained from scanning process. The resulting distribution pattern on the parameter of degree of overlap with porosity shows that the data obtained through modeling has a quite good precision. Meanwhile, the characteristics generated by the two types of modeling show a similar trend. The results of the comparison of the characteristics of the modeling results with the characteristics of the original sandstone samples show differences. This is because the grain shape of the model used is still perfectly round. The research can then be continued by using a more realistic polygon grain shape.