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THE ISOTOPIC FRACTIONS CHARACTERISTICS OF OIL FIELDS IN WESTERN SIBERIA Autor : Pavelieva Julia Scientific supervisor – Prosessor Prasolov Edward M.
Relevance of the research Purpose of the research Main results Conclusion Research methodology The structure of the presentation
The issue of the origin and source of petrol e um is one of the most important in fundamental science. It has a wide practical application, especially in conditions of depletion of explored hydrocarbon resources. Relevance of the research The main direction of geochemical methods for assessing oil prospects is the comparative study of oils, their components and characteristics of oil inherited from the original organic matter. Such a comparison provides a unique opportunity to identify oil-sour с e rock s, oil formation zones and oil accumulation reservoir. It is element composition carries the unique information about an oil sample. The composition and content of various elements, particularly their isotopic composition allows distinguishing the samples of different organic materials
The aim is to find out possible genetic affinity of oils in oilfields by means of isotope-fraction characteristics. Purpose of the research Tasks: To determine the isotope-fraction distribution of oil samples; To perform "oil-oil" correlation on the basis of isotope-fraction characteristics of the oils ; To evaluate oil and gas properties of rocks and determine the type of organic matter; To determine the possibility of genetic affinity between oil and oil source ; The object of research are the oils of oil fields in West Siberia
Main results The study of the distribution of isotopes of between fractions of different polarity as a genetic mark of oils has shown the following. All investigated oil fields are characterized by a similar type of distribution of isotopes between fractions.
Main results The second type The oils belong to the sapropel type of organic matter The first type The oils belong to the mixed humus- sapropel type of organic matter
Conclusion Studying the regularities of hydrocarbons and carbon isotopes distribution in oil fields it was possible to determine the type of organic substance and to quantify the initial oil and gas generation potential. A feature of the approach is the use of isotopic-fractional method, as the most progressive in resolving the problems of the origin and genetic relationship of oil. The method solves fundamental problems such as the origin of oil, the migration of underground fluids and the formation of their clusters in space-time coordinates.