Influence of aggregation of asphaltenes on the rheological properties of oil

E. V. Mal'Tseva, A. M. Gorshkov, L. V. Chekantseva, L. V. Shishmina, N. V. Yudina

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Abstract

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.

Original languageEnglish
Pages (from-to)1370-1375
Number of pages6
JournalRussian Journal of Applied Chemistry
Volume86
Issue number9
DOIs
Publication statusPublished - Sep 2013

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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