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Possible mechanism of oil formation in a flow of supercritical fluid (using carbon dioxide as an example)

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Abstract

An experimental study of the supercritical fluid extraction of the organic substance with carbon dioxide from rock and soil showed that a supercritical (SC) fluid can dissolve, transfer, and accumulate petroleum-like hydrocarbons including relict ones. It was hypothesized that during the supercritical extraction, the dissolution of organic substances is accompanied by their mechanochemical transformation in the micropores and microcracks of the solid. The resulting changes in the composition, structure, and distribution of the individual hydrocarbons are similar to those in petroleum-mother rocks. We can therefore assume that fast mechanochemical transformation of the dispersed organic matter of sedimentary rocks takes place in a flow of a deep supercritical fluid. This, in turn, would allow one to revise the time scale of oil accumulation from millions to possibly hundreds of years.

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Authors and Affiliations

  1. Institute of Oil and Gas, Siberian Division, Russian Academy of Sciences, Yakutsk, Russia

    S. H. Lifshits & O. N. Chalaya

Authors
  1. S. H. Lifshits
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  2. O. N. Chalaya
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Correspondence to S. H. Lifshits.

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Original Russian Text © S.H. Lifshits, O.N. Chalaya, 2010, published in Sverkhkriticheskie Flyuidy: Teoriya i Praktika, 2010, Vol. 5, No. 2, pp. 45–55.

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Lifshits, S.H., Chalaya, O.N. Possible mechanism of oil formation in a flow of supercritical fluid (using carbon dioxide as an example). Russ. J. Phys. Chem. B 4, 1142–1148 (2010). https://doi.org/10.1134/S1990793110070146

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  • DOI: https://doi.org/10.1134/S1990793110070146

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