A problem associated with many gas injection projects is the inefficient gas utilization, poor
sweep efficiency, oil recovery due to viscous instabilities (channelling or fingering), and …

One of the pioneering applications of foam is in enhanced oil recovery (EOR). A major
stumbling-block to the success of foam application in EOR is the adverse influence of oil on …

We extend a model for gravity segregation in steady-state gas/water injection into
homogeneous reservoirs for enhanced oil recovery (EOR). A new equation relates the …

Foam is a promising means to assist in the permanent, safe subsurface sequestration of
CO2, whether in aquifers or as part of an enhanced-oil-recovery (EOR) process. Here we …

A one-dimensional long core displacement experiment was designed based on injection of
pure foam liquid, air, and air-foam system into the tight matrix core and fracture core. This …

The relative immobility of foam in porous media suppresses the formation of fingers during
oil displacement leading to a more stable displacement which is desired in various …

The influence of surface-modified silica (SiO 2) nanoparticles on the stability and pore
plugging properties of foams in porous media was investigated in this study. The pore …

This paper establishes low-tension gas (LTG) as a method for submiscible tertiary recovery
in tight sandstone and carbonate reservoirs. The LTG process involves the use of surfactant …

Gas-injection EOR has good displacement efficiency but poor sweep efficiency. Foam can
improve sweep efficiency in these processes, but its direct injection would not be practical …

The CO 2 flooding is a popular method for enhanced oil recovery, even though viscous
fingering and gravity override always reduce the displacement efficiency. Foam agent can …