Multi-technical Analysis For Reservoir Rock Characterization Using Micro-CT, SEM-EDX and XRD Fahrisah Nurfadeliah Bahraini (a*), Fourier Dzar Eljabbar Latief (a)
a) Physics of Earth and Complex Systems, Faculty of Mathematics and Natural Sciences
Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia
*fahrisahnurfa2[at]gmail.com
Abstract
Enhanced Oil Recovery (EOR) is a technique that can be used to optimize the process of extracting oil in porous rocks. This technique requires information about the characteristics of hydrocarbon reservoir rocks in oil wells to be more effective. Therefore, research related to the characteristics of hydrocarbon reservoir rocks using several methods can be carried out, i.e., using Micro Computed Tomography (Micro-CT), X-Ray Diffraction (XRD), and Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). This study aims to analyze and relate several characterization methods that impact optimizing oil extraction. Micro-CT can be used to obtain projected images of reservoir rock samples which can be processed using Digital Rock Physics (DRP) analysis. Porosity and permeability values can be obtained using these tests. XRD is used to obtain information related to the mineralogy of the sample by calculating the diffraction angle. SEM-EDX can show the morphology of the clay mineral structure and the types of elements on the sample^s surface. These three tests provide results that can mutually improve the analysis of the samples studied. This analysis showed that the sample has a porosity of >20%. The sample is mainly composed of quartz grains with the surrounding dickite clay minerals, and the detected elements are C, O, Al, Si, and K. The permeability obtained was greatly influenced by the complexity detected in the sample. With the procedure that has been developed, this multi-technique analysis is expected to complement the direct (physical-based) measurement technique.
