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Inorganic Geochemistry of Crude Oils of Northern Eurasia after ICP-MS Data as Clear Evidence for Their Deep Origin

Author

Listed:
  • Kirill Svyatoslavich Ivanov

    (The Zavaritsky Institute of Geology and Geochemistry, Ural Branch (UB) of the Russian Academy of Sciences (RAS) Russia, Akademika Vonsovskogo Street, 15, 620016 Yekaterinburg, Russia)

  • Yuriy Viktorovich Erokhin

    (The Zavaritsky Institute of Geology and Geochemistry, Ural Branch (UB) of the Russian Academy of Sciences (RAS) Russia, Akademika Vonsovskogo Street, 15, 620016 Yekaterinburg, Russia)

  • Daniil Aleksandrovich Kudryavtsev

    (The Zavaritsky Institute of Geology and Geochemistry, Ural Branch (UB) of the Russian Academy of Sciences (RAS) Russia, Akademika Vonsovskogo Street, 15, 620016 Yekaterinburg, Russia)

Abstract

The emergence of mass-spectroscopy with inductively-coupled plasma (ICP-MS) made it possible to study the microelement composition of crude oil and its derivatives with the limit of detection (LOD) at the ppt level. We have studied the crudes from West Siberian (Shaimsky, Sredneobsky and Oktyabrsky regions) and Tatarstan Romashinskoye oilfields with the ICP-MS method to detect 50 rare, rare-earth, and other microelements. The elemental composition is reasonably comparable to their concentrations in ultrabasites whereas the contents of most of the elements are low to the limit. On the diagrams of rare-earth elements, one can see the prevalence of light lanthanides and positive europium anomaly. Increased content of platinoids was found in Tatar oils; in some cases, the concentration of ruthenium reaches 0.06 g/t. The study shows that studied crudes have a specific microelement composition. Based on the elevated contents of transit elements and platinoids, a conclusion was made about the “ultrabasic” geochemical–metallogenic specialization of studied petroleum systems and the assumption about its origin was proposed.

Suggested Citation

  • Kirill Svyatoslavich Ivanov & Yuriy Viktorovich Erokhin & Daniil Aleksandrovich Kudryavtsev, 2021. "Inorganic Geochemistry of Crude Oils of Northern Eurasia after ICP-MS Data as Clear Evidence for Their Deep Origin," Energies, MDPI, vol. 15(1), pages 1-18, December.
    • Handle: RePEc:gam:jeners:v:15:y:2021:i:1:p:48-:d:708496
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