Systematic investigation of the effects of mixed cationic/anionic surfactants on the interfacial tension of a water/model oil system and their application to enhance crude oil recovery

被引：85
作者：
Jia, Han [1 ]
Leng, Xu [1 ]
Hu, Mei [2 ]
Song, Yilei [1 ]
Wu, Hongyan [1 ]
Lian, Peng [1 ]
Liang, Yipu [1 ]
Zhu, Yanguang [1 ]
Liu, Jingping [1 ]
Zhou, Hongtao [1 ]
机构：
[1] China Univ Petr East China, Coll Petr Engn, Qingdao 266580, Peoples R China
[2] Shandong Inst Food & Drug Control, Jinan 250101, Shandong, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2017年 / 529卷
基金：
中国国家自然科学基金;
关键词：
Chemical enhanced oil recovery; Mixed surfactants; Interfacial tension; Core flooding tests; IONIC LIQUIDS; NONIONIC SURFACTANTS; PHASE-BEHAVIOR; WATER; MIXTURES; SULFONATE; MICELLIZATION; IMIDAZOLIUM; ADSORPTION; VESICLES;
D O I：
10.1016/j.colsurfa.2017.06.055
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A mixed cationic surface-active ionic liquid/anionic surfactant system consisting of N-dodecyl-N-methylpyrrolidinium bromide (L12) and sodium dodecyl sulfate (SDS) was used for chemical enhanced oil recovery (EOR). The mixed L12/SDS surfactant system could cause remarkable effects on the interfacial tension (IFT) between water and a model oil (toluene and n-decane, v:v = 1:1), and the strength of the effect depended on the L12/SDS molar ratio. The effects of temperature and salinity on the IFT were systematically investigated to verify the mechanism of the mixed surfactants at the interface. Moreover, the mixed L12/SDS surfactant system showed the desired ability to reduce the IFT of water/crude oil, greatly improving oil recovery with the assistance of a polymer in core flooding tests.
引用
收藏
页码：621 / 627
页数：7
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