Influence of aggregation of asphaltenes on the rheological properties of oil

Photon correlation spectroscopy was used to determine the threshold concentrations of n-heptane for phase transitions of asphaltenes in model systems for two types of oil. The rheological properties exhibited by high-paraffin oil in the asphaltene aggregation process were analyzed. It was shown that...

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Veröffentlicht in:Russian journal of applied chemistry 2013-09, Vol.86 (9), p.1370-1375
Hauptverfasser: Mal’tseva, E. V., Gorshkov, A. M., Chekantseva, L. V., Shishmina, L. V., Yudina, N. V.
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Sprache:eng
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Zusammenfassung:Photon correlation spectroscopy was used to determine the threshold concentrations of n-heptane for phase transitions of asphaltenes in model systems for two types of oil. The rheological properties exhibited by high-paraffin oil in the asphaltene aggregation process were analyzed. It was shown that the presence of resin and paraffi n fractions in oil prevents phase transition of asphaltenes at the threshold concentration of n -heptane for the model system, so that a higher precipitant concentrations is required for aggregation of asphaltenes and formation of oil sludge.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427213090096