期刊
PETROLEUM SCIENCE AND TECHNOLOGY
卷 36, 期 2, 页码 166-172出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10916466.2017.1413387
关键词
asphaltenic crude oils; extra-heavy crude oil; predictive theoretical model; viscosity bio-reducer; viscosity reduction
Considering that high viscosity of extra-heavy crudes is related to the formation of a dispersed phase of asphaltenes, a dynamic interaction model is proposed which explains the mechanism to achieve viscosity reduction based on the molecular interacting energies between the ester active principle of a viscosity bio-reducer and the asphaltene fraction of crude oil. A qualitative comparison is made between the theoretical and experimental results observed in relation to the rheological behavior of Mexican extra-heavy crudes in the presence of the enhancer. Both, theoretical and experimental data, described a decrease in the asphaltenes dispersed fraction in relation to the ester concentration mainly because of polarity in asphaltenic crudes.
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