УДК 553.982.2:669.018.674(470.56)

https://doi.org/10.21440/2307-2091-2019-2-56-62

This paper is devoted to the study of the content of metals in oil of the Orenburg fields. The relevance of continuous research on the metallogeny of petroleum conducted in the laboratory of physical research methods at the Orenburg State University is connected both with theoretical aspects (problems of element migration, the genesis of metals and the oil itself) and practical aspects (geological and geochemical issues of estimating oil and gas potential of territories, industrial raw material aspect and environmental issues). The purpose of this work is to identify the concentrations of a number of metals, including noble ones, the patterns of their distribution and prospects for subsequent extraction in order to comprehensively use organic raw materials and to reduce the negative environmental impact on the territory of oil and gas regions.
The object of study is the concentration of metals in oil. The subject is the patterns of distribution of metals and the prospects for their extraction. The tasks of the work are to determine the content of metals in oil samples, to identify associations of metals and their distribution in lithologic and stratigraphic levels. Samples of hydrocarbons were selected by a reservoir tester in terrigenous and carbonate reservoirs of the Buzulukskaya depression (Yuzhno-Buzuluksky and Mukhano-Erokhovsky oil, gas, and geological regions), which contain the largest oil fields in the region. The determination of noble metals, cobalt, and nickel was carried out by atomic absorption spectrometry (using the author’s patented method of determining noble metals in carbonaceous rocks); the other metals were determined by spectral emission analysis.
Results. Additional data were obtained on the elevated concentrations of a number of metals – titanium, vanadium, and zirconium, which makes it possible to consider oil and oil products as organic minerals when developing technologies for their extraction. It was revealed that the increased accumulation of these metals in the oil of these deposits is typical for the deposits of the Upper Devonian and the Lower and Middle Carboniferous. The way of the distribution of metals, their close contents and the physical and chemical profile of oil in reservoirs of various fields may indicate similar conditions of their formation and the possibility of reservoir correlation with the mineral assemblage.

Keywords: metals, oil, patterns of distribution, environmental consequences, extraction.

REFERENCES

1. Ponomareva G. A., Pankratiev P. V., Halzov A. А. 2012, The mineral assemblage of oil from the Orenburg fi elds. Vestnik OGU [Vestnik of the Orenburg State University], no. 1, pp. 125–131. (In Russ.)
2. Ponomareva G. А. 2018, Metallogenicheskaya spetsializatsiya neftegazovykh mestorozhdeniy Orenburgskoy chasti Volgo-Ural’skoy neftegazonosnoy provintsii i vozmozhnost’ izvlecheniya metallov iz uglevodorodnogo syr’ya [Metallogenic specialization of oil and gas fi elds of the Orenburg part of the Volga-Ural oil and gas province and the ability to extract metals from hydrocarbons]. University complex as a regional center of education, science, and culture: collection of papers of all-Russian science conference. Orenburg, pp. 1081–1084.
3. Punanova S. A. 2014, Supergene transformed naphthides: peculiarities of trace-elements composition. Geochemistry International, vol. 52, no. 1, pp. 64–75. https://doi.org/10.1134/S0016702913110086
4. Punanova S. A., Vinogradova T. L. 2016, Geochemical features of mature hydrocarbon systems and indicators of their recognition. Geochemistry International, vol. 54, no. 9, pp. 852–859. https://doi.org/10.1134/S0016702916080103
5. Marakushev А. A., Paneyah N. A., Rusinov V. L., Zotov I. А. 2007, Paragenesis ores of hydrocarbon specifi city. Izvestiya Vysshikh Uchebnykh Zavedeniy. Geologiya i Razvedka [Proceedings of Higher Schools. Geology and Exploration], no. 6, pp. 33–40. (In Russ.)
6. Lazarenkov V. G., Talovina I. V. 2001, Geokhimiya metallov platinovoy gruppy [Geochemistry of platinum group metals]. Saint-Petersbirg, 266 p.
7. Ivanov K. S. 2018, About the possible maximum depth of oil deposits. Izvestiya UGGU [News of the Ural State Mining University], issue 4 (52), pp. 41–49. (In Russ.) https://doi.org/10.21440/2307-2091-2018-4-41-49
8. Sverjensky D. A., Stagno V., Fang Huang. 2014, Important role for organic carbon in subduction-zone fl uids in the deep carbon cycle. Nature Geoscience, vol. 7, pp. 909–913. https://doi.org/10.1038/ngeo2291
9. Rodkin M. V., Rundkvist V. B., Punanova S. A. 2016, The relative role of lover and upper crustal processes in the formation of trace elements compositions of oil. Geochemistry International, vol. 54, no. 11. P. 989–995. https://doi.org/10.1134/S0016702916090068
10. Shpirt M. Ya., Punanova S. A. 2017, Oil and schists as a source of industrial production of potentially valuable elements. Neftyanoye khozyaystvo [Oil industry], no. 4, pp. 58–62. (In Russ.) https://doi.org/10.24887/0028-2448-2017-4-58-62
11. Baranov V. K., Galimov A. G., Dontskevich I. A. et al. 1997, Geologicheskoye stroyeniye i neftegazonosnost’ Orenburgskoy oblasti [Geological structure and oil and gas potential of the Orenburg region]. Orenburg, 272 p.
12. Punanova S. 2016, Geochemical Peculiarities of the Distribution of Trace Elements in Caustobioliths. Geophysical Research Abstracts: EGU General Assembly. Goettingen, vol. 18, p. 6.
13. Sharapova I. I., Kolomenskaya E. A., Kolomenskaya A. V. 1996, Gosudarstvennyy balans zapasov poleznykh iskopayemykh Rossiyskoy Federatsii [State Register of Mineral Reserves of the Russian Federation]. Ed. by V. G. Ruban, issue 60. Oil, vol. V. Ural region. RF Committee on Geology and Subsoil Use. Russian Federal Geological Fund. Moscow, pp. 3–34, 412–600.
14. Nuranbaeva B. M., Akhmedzhanov T. K., Ismagilova L. 2013, Method and technological schemes for the extraction of vanadium and other metals from petroleum and petroleum products during their preparation. Sovremennyye naukoyemkiye tekhnologii [Modern high technologies], no. 4, pp. 49–52. (In Russ.)
15. Bowen H. J. M. 1966, Trace Elements in Biochemistry. London: Academic Press, 241 р.