... Abstract Surface tension is one of the important properties in enhanced oil recovery, particularly for gas-liquid displacement in porous media and separation process. It acts to keep interfaces of two immiscible fluids smooth, where two or more curved interfaces create pressure differences...

... are not entirely the same as that of Newtonian fluids. It is not only a force perpendicular to the oil-water interface overcoming the restraining capillary force, but also a viscous dragging force parallel to the oil-water interface that mobilizes the residual oil. oil droplet waterflooding oil cluster...

... in the crude oil. Low concentration of a surfactant, ORS-41 easily forms a w/o emulsion, but an o/w emulsion is formed in 0.3% wt ORS-41 solution. The effect of de-emulsifiers on interfacial tensions, surface pressure and membrane strength concludes that the de-emulsifier enters into the interface and take...

... is lower than those for the drainage. At higher water saturation, the picture is the other way around. porous medium interface saturation transmission line imbibition reflection coefficient fluid dynamics scatter function drainage dielectric permittivity permittivity coefficient...

... Abstract The mechanism how polyacrylamide (PAM) influences the properties of produced liquid were investigated by means of the measurements of microscopic properties of oil-water interface. The resluts show that the presence of PAM results in significant increases of membrane strength...

... correlations. society of petroleum engineers displacement test psig enhanced recovery interface co 2 ift oil recovery noraini ahmad displacement interfacial tension determination breakthrough chemical flooding methods petroleum engineer anwar raja dm ibrahim 57286 miscible displacement...