Engineered water surfactant flooding (EWSF) is a novel EOR technique to reduce residual oil saturation; however, it becomes quite challenging obtain Winsor Type III microemulsion and the lowest IFT under actual reservoir conditions if only low salinity used. The main objective of this study was design negative gradient optimize performance hybrid method. Three corefloods were performed on carbo...

A migração de finos é um importante mecanismo que descreve os efeitos da injeção água baixa salinidade (LSW) em reservatórios areníticos. As interações entre e as superfícies rochosas são descritas pela teoria Derjaguin- Landau-Verwey-Overbeek (DVLO). Essas regidas por vários parâmetros físico-químicos, tais como zeta potencial, composição iônica, pH temperatura. Neste artigo, realizadas anális...

Hysteresis effects in two-phase flow in porous media are important in applications such as waterflooding or gas storage in sand aquifers. In this paper, we develop a numerical scheme for such a flow where the permeability hysteresis is modeled by a family of reversible scanning curves enclosed by irreversible imbibition and drainage permeability curves. The scheme is based on associated local R...

We use a pore-scale network model in conjunction with conventional reservoir-scale simulations to investigate wettability variation within an oil/water transition zone. If the initial water saturation within the transition zone is controlled by primary drainage, we predict that initial production behavior is the same regardless of wettability. However, if the initial water saturation has been m...

The object of research is oil fields at a late stage their development. most problematic issues in the development are formation and withdrawal residual reserves. This problem especially acute or final stage, when productivity wells decreases water cut production catastrophically increases. acceptable system such conditions use methods for increasing recovery and, first all, by injecting into r...

In this work, the flooding processes of low salinity waterflooding and polymer (LSWF LSP) in sandstone reservoirs were mechanistically modelled at nano-and macro-scales. Triple-layer surface complexation models utilised to simulate interactions oil-brine sandstone-brine interfaces. The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was applied describe stability interfacial films crude oil-brin...