Research Article

Investigation of Enhanced Oil Recovery Using Dimensionless Groups in Wettability Modified Chalk and Sandstone Rocks

Figure 15

Schematic of rock pore in miscible CO2 enhanced oil recovery for hydrophobic (aged) and hydrophilic (unaged) porous media [30].
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(a) Unaged porous medium (hydrophilic)
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(b) Aged porous medium (hydrophobic)