Interfacial interaction and emulsification of crude oil to enhance oil recovery
by Rahul Saha; Aditi Sharma; Ramgopal V.S. Uppaluri; Pankaj Tiwari
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 22, No. 1, 2019

Abstract: This work addresses the characterisation of crude oil to examine opportunities for chemical enhanced oil recovery. Interfacial tension (IFT) studies were conducted for alkalis (NaOH and Na₂CO₃), surfactants (cetyltrimethylammonium bromide and sodium dodecyl sulphate), and their combinations. IFT studies revealed that the optimum concentrations of individual alkalis, NaOH and Na₂CO₃ are 0.1 wt%, 0.25 wt% for which IFT values of 5.15 × 10⁻² and 0.40 mN/m have been obtained respectively. For synergy of alkali-surfactant, the complex IFT behaviour indicated values in the range of 10⁻² mN/m. Emulsification and sandpack flooding studies affirmed that alkali and alkali-surfactant flooding can provide 24.25% and 38.79% residual oil recovery, respectively. [Received: August 20, 2017; Accepted: December 24, 2017]

Online publication date: Mon, 16-Sep-2019

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