Screening of microemulsion properties for application in enhanced oil recovery

被引:151
作者
Bera, Achinta [1 ]
Kumar, T. [1 ]
Ojha, Keka [1 ]
Mandal, Ajay [1 ]
机构
[1] Indian Sch Mines, Dept Petr Engn, Dhanbad 826004, Bihar, India
关键词
Microemulsion phase behavior; Interfacial tension; Particle size distribution; Microemulsion flooding; Enhanced oil recovery; DYNAMIC INTERFACIAL-TENSIONS; SODIUM DODECYL-SULFATE; PHASE-BEHAVIOR; NONIONIC SURFACTANTS; CRUDE-OIL; PART I; ADSORPTION; SYSTEMS; BRINE; SULFONATE;
D O I
10.1016/j.fuel.2013.12.051
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Microemulsion in enhanced oil recovery is an efficient tool because of its high level of extraction efficiency of residual oil from natural oil reservoir. In the present paper the effect of salinity on anionic microemulsion phase behavior has been investigated by water solubilization method. Interfacial tensions between crude oil and brine, surfactant solution and microemulsion have been measured and it was found that the microemulsion has high ability to reduce interfacial tension. Pseudoternary phase diagram has been established at optimum salinity and composition of single-phase microemulsion has been determined from the curve. Laser light scattering was used to monitor particle size of several microemulsion formulations at different salinities. A series of flooding experiments have been performed using the prepared microemulsions. The additional recoveries were calculated by material balance. Encouraging results with additional recovery more than 25% of original oil in place above the conventional water flooding have been observed. Adsorption characteristics of the surfactant on the sand particles (adsorbent) at different salinities have also been studied. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:198 / 207
页数:10
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