This study examines the effects of change in the concentrations of monovalent and divalent ions in the polymer-contained surfactant solution on the macroscopic behavior of viscous-modified surfactant waterflooding in heavy oil reservoirs. Salts that are used in this set of floods were sodium chloride, magnesium chloride, and calcium chloride. The results indicate that four different ranges ...

Abstract Enhanced oil recovery (EOR) is a proven method to increase production from the brown fields. One of efficient EOR methods injecting surfactants release trapped oil. However, few unconsolidated behaviours were observed in both field and laboratory practice. In this study, new framework was adapted evaluate continuous surfactant flooding (CSF) Bentiu reservoir. The study aims quantify ex...

Fractional flow analysis confirms the advantages of surfactant alternative gas injection (SAG) in enhanced oil recovery, but an adsorption phenomenon that has been affected by several factors, weakens the effectiveness of SAG injection. In this study, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density on silica mineral were investigated by static and...

Low-salinity surfactant nanofluids have recently shown promising results in the wettability alteration of reservoir rocks from oil-wet state towards more water-wet state. However, investigation pore-level interactions injection real oil carbonate at conditions, which determines overall fluid dynamics, is lacking. Therefore, this work, we studied effect nanoparticles augmented low-salinity flood...