Effect of acid and nitrogen containing heterocyclic compounds on water-oil interfacial tension of Daqing crude oil

被引：0

作者：

Wu, Xiaolin ^{[1
]}

Chu, Yanping ^{[1
]}

机构：

[1] Exploration and Development Research Institute, Daqing Oil Field Company Ltd.

来源：

Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | 2013年 / 29卷 / 04期

关键词：

Crude oil active component; Interfacial tension; Nitrogen containing heterocyclic compounds; Synergistic effect;

D O I：

10.3969/j.issn.1001-8719.2013.04.020

中图分类号：

学科分类号：

摘要：

The active components, nitrogen containing heterocyclic compounds (NCHC) and acidic compounds (Acids), were separated from Daqing crude oil, and then their synergistic effects with heavy alkyl benzene sulfonate (HABS) for lowering oil-water interfacial tension (IFT) were systematically investigated. The results showed that NCHC had obvious synergistic effect with HABS for lowering IFT, though its interfacial activity was weaker than that of Acids in alkaline conditions. In addition, the possible formation mechanisms of ultra-low IFT in HABS-NaOH-Acids and HABS-NaOH-NCHC systems were different. The ultra-low IFT of the system was obtained by synergistic effect between HABS and dissociation acid soap formed by reaction of acid with NaOH for HABS-NaOH-Acids, however, which was easy to be achieved whether in the alkali system or in the salt system, because NCHC itself had an obvious synergistic effect with the HABS.

引用

页码：681 / 686

页数：5

共 20 条

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