Analysis of reservoir properties and parameters of oil fields suitable for the application of CO2-EOR method

Abstract

he criteria worked out on the basis of the literature study were used for indicating oil fields, where carbon dioxide can be injected for the purpose of storing or to enhance the production of oil. The preliminary selection of oil fields, where the miscible CO2-EOR method can be applied was based on the following criteria: depth of deposition, density of oil, reservoir temperature and oil saturation. From among 68 analyzed oil fields, 35 were used for the analyses: 3 fields in the Carpathians, 6 in the Carpathian Foredeep and the remaining 26 fields in the Polish Lowland. The statistical analysis methods were used for analyzing reservoir parameters of fields preselected for the CO2-EOR method, i.e. depth of deposition of the roof of the horizon, average thickness, initial reservoir pressure and reservoir temperature. The reservoir properties of these fields were also analyzed, i.e. average permeability, average porosity and average saturation with oil.