蒸气开采过程中金属盐对稠油粘度及平均分子量的影响

The change of viscosity and average molecular weight of heavy oil from Liaohe oilfield with temperature and reaction time are investigated in the paper. The effect of metal salts and reservoir minerals on the aquathermolysis of the heavy oil are also studied. The results show that Liaohe heavy oil can undergo aquathermolysis in steam injection process. It is found that the metal salts can accelerate the aquathermolysis of heavy oil and lead the viscosity and average molecular weight decrease further. The reservoir minerals have the synergetic effects on the aquathermolysis of the heavy oil. The results provide a theoretical basis for down-hole catalytic upgrading of heavy oil.