超稠油水热催化裂解反应前后性质变化

为了更好地应用水热催化裂解技术对稠油进行开采,明确稠油性质变化的本质,对胜利油田超稠油进行微乳液纳米镍催化降黏剂水热催化裂解实验研究。实验结果表明,水热催化裂解反应后,稠油黏度大幅度降低,稠油中胶质、沥青质的含量下降,硫含量大幅降低,氮含量略减少。稠油氢碳原子比增加,平均分子质量减小。族组分中沥青质的平均分子质量减小幅度最大,说明沥青质裂解对稠油黏度的降低和平均分子质量的减小起到了关键作用。该研究为日后稠油水热催化裂解降黏技术的推广提供了技术参考。

Property changes of extra-heavy oil before and after catalytic aquathermolysis

This paper addresses the catalytic aquathermolysis experiments conducted with the catalytic viscosity reducer of nanometer-nickel microemulsion in order to better understand extra-heavy oil property and extract it from the Shengli oilfield.The results show that after catalytic aquathermolysis reaction,the viscosity of extra-heavy oil decreases sharply,the contents of resin and asphaltene decrease,the content of sulfur reduces drastically,and the content of nitrogen slightly decreases.The hydrogen/carbon rat...