The change of superheavy oil viscosity after mixing light oil was studied by the experiment,and the mixed viscosity was calculated by non-linear mixing method.

• 采用在注蒸汽过程中向地层掺入稀油的方法来降低地层稠油的粘度,实验研究了超稠油掺稀油后粘度的变化,并按非线性混合方法计算了稠油与稀油混合后的粘度。