沥青质对稠油黏度的影响

选用新疆地区的6种高黏稠油为主要研究对象，测定各稠油的性质并配制不同沥青质含量的同源调合稠油、异源调合稠油，利用黏度法考察沥青质含量对稠油黏度的影响。结果表明：无论是同源调合稠油还是异源调合稠油，随着沥青质添加量的增加，稠油黏度均呈增大的趋势，且在沥青质添加量达到一定值时黏度出现突变；相同温度、相同沥青质含量下，四氢呋喃处理过的稠油黏度比甲苯处理过的稠油黏度要大，且增加幅度较甲苯处理过的要大。

EFFECT OF ASPHALTENE ON VISCOSITY OF VISCOUS OILS

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.