稠油在水蒸汽作用下组成变化研究

STUDY ON COMPOSITION CHANGES OF HEAVY OILS UNDER STEAM TREATMENT

报道了在水蒸汽作用下辽河油田稠油发生的化学变化。研究结果表明 ,稠油在水蒸汽作用下 ,其组成中饱和烃、芳香烃含量增加 ,胶质沥青质含量减少 ,粘度下降 2 8%以上。气相色谱分析结果表明 ,稠油经水蒸汽作用后 ,其累积碳原子数少于C2 5 的已经达到 5 0 97% ,远远超过处理前的 17 93%。

WT5B1]The aquathermolysis reaction of heavy oils obtained from Liaohe oil fields in China is studied at 240?℃ The results show that Liaohe heavy oils have been undergone visbreaking during the process After treatment with steam, the viscosity of the heavy oil is reduced by 28%～42% and the amount of the saturate and aroomatic hydrocarbons is increased The gas partition chromatography (GPC) results indicate that after reaction the accumulated amount of carbon numbers less than C 25 is 50 97% in comparison with 17 93% before reaction The results provided the basis data for recovery heavy oil by in situ catalytic method in production heavy oil in oilfields [WT5H1]