The physicochemical properties of the investigated hydrocarbon media — oils and high-boiling fractions — are presented. Based on the rheological characteristics, the type of fluids has been determined in accordance with the Newton law, as well as the presence of viscosity anomaly of the investigated media at various temperatures. The values of the oil thixotropy energy, as well as of the viscous flow activation energy of the studied systems, have been obtained. Phase transition of high-boiling fractions at 60°C has been revealed. The dependences of the viscous flow entropy of investigated hydrocarbon media on increase in the temperature from 10 to 140°C have been obtained. The dependences of the frequency of jumps of hydrocarbon system molecules on viscosity have been obtained for the first time.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 91, No. 4, pp. 1098–1105, July–August, 2018.
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Boitsova, A.A., Kondrasheva, N.K. Rheological Properties of Hydrocarbon Systems with a High Content of Resins and Asphaltenes. J Eng Phys Thermophy 91, 1038–1046 (2018). https://doi.org/10.1007/s10891-018-1829-5
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DOI: https://doi.org/10.1007/s10891-018-1829-5