摘要
•At low concentration (≤ 0.25 wt.%), an ultra-low interfacial tension (order of 10−3 mN/m) was achieved for the candidate heavy oils.•Interfacial tension (IFT), dependent of reservoir environment, increased linearly with formation temperature.•The presence of metal divalent ions and chemical composition of the crude oil were found to alter heavy oil solubilization.•Cationic dimeric micellar slugs exhibited a low adsorption on reservoir formation rocks.•Investigated slugs mitigated formation of acidic materials generated as coproduct during other recovery processes.