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Research fields
To establish regularities of the molecular compositions of porphyrins, polycyclic aromatic hydrocarbons, the ways of their formations and transformations in the crust for oil and gas prospecting and exploration.
To identify common interconnections between chemical compositions of porphyrins, polycyclic aromatic hydrocarbons and conditions of oil deposits occurrence and formation. To establish the role of secondary processes in changing porphyrins compositions in oil.
To develop new geochemical criteria for paleogeographic reconstructions.
To study impurities of chemical pollutants in aquatic environments and bottom sediments.
Main results of the study
1. It was shown that a lower resistance of porphyrins with a cyclopentane ring to high temperatures enables to use the relative content of these compounds to characterize the thermal history of oil. The presence of perylene in oil indicates the shallow water of the basin of sedimentation of the original oil matter.
2. Data on compositions of oils and natural bitumen occurring in crystalline rocks of Vietnam and Khakassia have been obtained. It has been established that genetically identical oils, generated by the organic matter of sedimentary rocks, occur in the basement and Oligocene in the south of Vietnam. The composition of bitumen hydrocarbons from the fractured basalts of Khakassia indicates its formation as a result of the hypergenesis of oil entered the crystalline reservoirs from the sedimentary complex. The specific composition of aromatic hydrocarbons in bitumen in the amygdaloid basalts and dolerites of Khakassia is due to the severe thermal impact on magma OM when it was introduced into the earth's crust.
3. Compositional peculiarities of metalloporphyrins, saturated and aromatic hydrocarbons of oils from the Jurassic and Paleozoic of the Nyurol depression have been revealed, indicating a specific, apparently unified formation source for the majority of deposits in the section. The data set showed that the organic matter that generated these oils was accumulated in the Nyurol depression in an unstable, oxygen-free photic zone that apparently existed in the Devonian or earlier periods. The instability of this zone determined the difference in the composition of the oils of the Nyurol depression in the Western Siberia from the Paleozoic oils of the Ural zone of the European part in Russia.
4. Data on the content and compositions of n-alkanes, polycyclic aromatic hydrocarbons, tocopherols, steroids, sesqui-, di- and triterpenoids in the West Siberian peat of various genesis, in marsh plants and biomass of bacteria have been obtained. The effect of the composition of the initial plant biomass, the microbial effect, the acidity of the peat accumulation medium, the depth of the peat and the degree of its decomposition, have been estimated, as well as the ambient temperature effect on the directionality of the change in the composition of the biomarkers in bog facies.
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