Features of Physicochemical Properties and Conditions of the Location of Deep Hard-to-Recover Oils
I. G. YASHCHENKO
Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
Keywords: глубокопогруженные отложения, нефтегазоносный бассейн, месторождения, база данных, физико-химические свойства, условия залегания, Западно-Сибирский нефтегазоносный бассейн, deep-seated sediments, oil and gas basin, deposits, database, physicochemical properties, occurrence conditions, West Siberian oil and gas basin
Pages: 311-317
Abstract
Hydrocarbon deposits occurring at a depth of more than 4.5 km are poorly studied, although they are situated on all continents. This slows down the assimilation of these resources. Analysis of the information from the database of the Institute of Petroleum Chemistry of Siberian Branch of the Russian Academy of Sciences on the physicochemical properties of oil showed that the largest oil reserves are concentrated at depth down to 3000 m. The features of the changes of physicochemical properties of oils were established to depend on the depth of occurrence. It is shown that in different oil basins the density and viscosity of oil decreases with depth. The content of sulphur, resins and asphaltenes decreases with depth, while the content of petroleum gas and fractions increases with depth. The analysis of hydrocarbon occurrence conditions at great depths was carried out. The prospects of oil and gas potential of the deep sediments of oil and gas basins in Russia and Western Siberia, in particular, are evaluated.
DOI: 10.15372/CSD2020236
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