Abstract:

Six kinds of Xinjiang heavy oils were used as the main research objects. The basic compositions and properties of the heavy oils were determined. The homologous and heterologous blended heavy oils were prepared with different contents of asphaltenes to study the influence of content of asphaltene on viscosity of blended heavy oils by viscosity method. The results show that the viscosity of both of homologous and heterologous heavy oils increases as asphaltene content increases; the viscosity increases sharply when the asphaltene content reaches a certain value. At the same temperature and asphaltene content, the viscosity of heavy oil treated by tetrahydrofuran is higher than that by methylbenzene. The extent of viscosity increase of the oils treated by tetrahydrofuran is larger than that by methylbenzene.

Key words: viscous oil, viscosity, asphaltene, homology, heterology