Analýza vlastností vzorků karbonátových hornin pro účely posouzení podzemního úložiště CO2

Abstract

This bachelor thesis focuses on the study of petrophysical parameters of reservoir rocks. In this context, the work presents the possibilities of underground CO2 storage with special emphasis on mined hydrocarbon reservoirs, specifically fractured carbonate reservoirs. In this type of reservoirs, classical fracture to vug permeability and porosity is often only one component of the petrophysical evaluation. The hydraulics of fracture systems may prove to be the dominant hydraulically permeable or even storage structural element in these reservoirs. This fact is taken into account in the theoretical part. The practical part of the thesis focuses on the determination of the permeability, porosity and compressibility of rock samples coming from the carbonate reservoir formation. The petrophysical evaluation is realized by determining the reservoir quality index (RQI) and estimating the 65th percentile of the pore radius (R35) based on the results obtained by petrophysical measurements in the practical part of the work. The samples are of relatively consistent reservoir quality and the values obtained provide important data for assessing the quality of the rock matrix.