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Mohammad Saber Karambeigi,Reza Abbassi,Emad Roayaei,Mohammad Ali Emadi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-
Emulsion flooding has been proved to be an effective chemical enhanced oil recovery (CEOR) method. The performance of this technique is strongly dependant on the formulation of the emulsion slug. Toachieve the best formulation, different approaches have been introduced in the literature. Nevertheless,a systematic workflow containing the method(s) of the design of experiments (DOEs) has not beenreported as yet. In this paper, we developed a workflow which is comprised mainly of three stages. In thefirst place, the phase behavior experiments of sodium dodecyl sulfate (SDS)/water/diesel (as an efficientand economic hydrocarbon phase)/salt system were carried out using response surface methodology(RSM) to model and optimize the emulsification process. The second stage was followed by thecharacterization of optimum formulation in terms of rheological behavior and particle size distribution. Finally, microvisual and core-flood displacement tests were performed to evaluate the efficacy ofemulsion flooding to recover the residual oil bypassed or trapped after water flooding. This paperpresents the results of experiments done in different stages of the proposed workflow. The resultsdemonstrate the high potential of emulsion formulated systematically by DOE approach to increase oilrecovery factor