摘要
研究了反应温度、反应时间、加水量对辽河曙一区超稠油水热裂解反应的影响。结果表明,随反应温度、反应时间和水油质量比的增加,水热裂解反应后油样的饱和分、芳香分的含量逐渐增大,沥青质、胶质含量逐渐减小;在反应温度为240℃、反应时间24h、水油质量比为0.5时,超稠油水热裂解反应基本完成,反应后油样的50℃动力粘度由147.5Pa·s降低到115.4Pa·s,平均相对分子质量由674降低到550。由此可知,含硫量仅为0.45%的辽河曙一区超稠油能够通过水热裂解反应降低其粘度,实现降粘开采。
The effect of reaction temperature, reaction time, the ratio of water to oil on aquathermolysis of Liaohe extra-heavy oil was investigated. With respect to the original crude oil, the viscosity of oils obtained after aquathermolysis was decreased, the contents of saturate and aromatic hydrocarbon were increased,the contents of resin and aspaltene were reduced with the rising of reaction temperature,reaction time and the ratio of water to oil. From the experimental data,the extra-heavy oil was undergone visbreaking during the temperature was 240 ℃, the reaction process. The reaction was basically time was 24 h, the ratio of water completed, when the reaction to extra-heavy oil was 0. 5. Laboratory experiments showed the viscosity could be decreased from 147.5 Pa·s to 115.4 Pa·s and the mean molecular weight could be changed from 674 to 550 by aquathermosis. A conclusion can be drawn,extra-heavy oil with lower sulfur content can be upgraded by aquathermolysis and be exploited using downhole upgrading technique.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2007年第8期28-31,共4页
Petroleum Processing and Petrochemicals
关键词
重质原油
裂解
粘度
操作条件
heavy crude
pyrolysis
viscosity
operating condition
