caa a22 4500 606225846 CHVBK 20210128101149.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10553-015-0583-z doi (NATIONALLICENCE)springer-10.1007/s10553-015-0583-z Composition of Oils of Carbonate Reservoirs in Current and Ancient Water—Oil Contact Zones [Elektronische Daten] [G. Kayukova, V. Morozov, R. Islamova, F. Nosova, I. Plotnikova, S. Petrov, A. Vakhin] Differences in the composition of heavy oils from ancient and current water—oil contact (WOC) zones of productive strata of carbonate reservoirs of deposits of Bashkir and Turnei (Tatarstan) stages are discerned by applying a host of physicochemical methods, namely, elemental analysis, liquid-adsorption chromatography, gas chromatography, IR spectroscopy, and EPR spectroscopy. There is no direct connection of the composition of the hydrocarbons with the secondary changes of the reservoirs and their filtration-capacity parameters. Signs of seepage of light hydrocarbons are detected in the ancient WOC zones characterized by the presence of products of biochemical degradation of high-molecular-weight components of residual oil. This provides a basis for suggesting that these zones are not only fluid-supports but also migration channels for interstratal seepages of hydrocarbons during formation and development of oil reservoirs. Springer Science+Business Media New York, 2015 carbonate reservoirs nationallicence heavy oil nationallicence water—oil contact zones nationallicence geological-lithological properties nationallicence filtration-capacity parameters nationallicence Kayukova G. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Science Center, Russian Academy of Sciences, Kazan, Russia aut Morozov V. Kazan' (Volga Region) Federal University, Kazan, Russia aut Islamova R. Kazan' (Volga Region) Federal University, Kazan, Russia aut Nosova F. Kazan' (Volga Region) Federal University, Kazan, Russia aut Plotnikova I. Kazan' (Volga Region) Federal University, Kazan, Russia aut Petrov S. Kazan' (Volga Region) Federal University, Kazan, Russia aut Vakhin A. Kazan' (Volga Region) Federal University, Kazan, Russia aut Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/1(2015-03-01), 117-126 0009-3092 51:1<117 2015 51 10553 https://doi.org/10.1007/s10553-015-0583-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10553-015-0583-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kayukova G. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Science Center, Russian Academy of Sciences, Kazan, Russia aut NATIONALLICENCE 700 1- Morozov V. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 700 1- Islamova R. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 700 1- Nosova F. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 700 1- Plotnikova I. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 700 1- Petrov S. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 700 1- Vakhin A. Kazan' (Volga Region) Federal University, Kazan, Russia aut NATIONALLICENCE 773 0- Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/1(2015-03-01), 117-126 0009-3092 51:1<117 2015 51 10553