Application of Supercritical Fluids for the Separation of Group Components of Petroleum Systems (Review)

This review examines information on modern methods of separating oils and oil residues in the analysis of group composition using supercritical fluids. The features of the influence of the composition and properties of individual group components of oil samples on further processing are shown. Traditional methods of separating petroleum feedstock into group components are briefly reviewed. The results of modern studies of extraction methods for separating oil samples using supercritical fluids are shown. Information is presented on new methods for the extraction of asphaltenes and fractionation of heavy oils and oil residues using СO₂.