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为开发一种新型的原油降黏剂,考察了树状大分子聚酰胺-胺和0.5代树状长链酯对原油的降黏性能,分析了树状大分子的端基结构对原油降黏性能的影响.结果表明:端基为酯基的树状大分子对原油具有一定的降黏效果,同一支化代,降黏率随端基烷基碳数的增加而增强,其中0.5代树状十八酯在70℃,质量分数为0.6%时,能使辽河稠油的黏度降低32.4%;不同支化代,随支化代的增加,降黏性能增强;端基为氨基的树状大分子对原油不具有降黏效果.
In order to develop a new type of crude oil viscosity reducer, the viscosity reducing properties of the dendrimer polyamide-amine and 0.5-dendritic long chain ester on crude oil were investigated. The end-group structure of dendrimer The results showed that the dendritic macromolecule with ester group had a certain viscosity reduction effect on crude oil, and the viscosity reduction rate increased with the increase of terminal alkyl carbon number in the same branched generation, in which 0.5-generation tree Stearic acid ester at 70 ℃ and mass fraction of 0.6% can reduce the viscosity of Liaohe heavy oil by 32.4%. The descending viscosity of the Liaohe heavy oil increased with the increase of branch generation in different branching generations. Macromolecules do not have viscosity reducing effect on crude oil.