Ultrasonic was applied to assist the catalytic aquathermolysis reaction of heavy oil, and the effect of catalyst and ultrasonic on the physical and chemical properties of Shengli Gudong heavy oil was investigated. Compared to catalytic aquathermolysis reaction, the results of ultrasonic assisted catalytic aquathermolysis indicate that the viscosity of heavy oil is reduced by 86.2% , and the composite technology can further decrease the average molecular weight of heavy oil, increase the saturate and aromatic contents, decrease the resin and asphaltene contents, improve the mol ratio of nH/nc, and decrease the heteroatoms content of heavy oil. The results of dynamic simulation experiments show that in-situ ultrasonic assisted catalytic aquathermolysis exhibits good performance with the 53.91% heavy oil recovery and 80.5% viscosity reduction. The experimental results prove that the combination of ultrasonic and catalyst has a synergetic effect, which attributes to the reduction of viscosity and improvement of heavy oil quality.%将超声波应用到稠油催化水热裂解实验中,研究了超声波辅助催化水热裂解对胜利油田孤东稠油物化性质的影响.结果表明,超声波辅助作用下稠油的降黏率达到86.2％,与催化水热裂解相比,稠油的平均相对分子质量进一步减小,饱和烃和芳香烃组分含量增加,胶质和沥青质组分含量减少,稠油组分的氢碳原子比增加,杂原子含量减小.动态模拟实验中超声波辅助层内催化水热裂解效果显著,稠油采收率达到53.91％,降黏率达到80.5％.由此表明,超声波辅助催化水热裂解具有可行性,超声波与催化剂协同作用促进了水热裂解反应,一定程度上改善了稠油的品质.
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