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Table 8

Sandstone core properties with optimized emulsion and polymer flooding results.

Exp. SN. Porosity (%) Permeability, k (mD)
Design of chemical slug Secondary recovery (% OOIP) Additional recovery (% OOIP) Cumulative Oil recovery (% OOIP) % Saturation
No. kw (Sw =1) ko (Swi) S wi S oi S or
I 25.10 110.21 42.67 Optimized emulsion 54.20 21.03 75.23 16.03 83.97 20.80
II 24.96 109.45 41.82 1.5 wt.% aqueous PHPA 52.92 13.64 66.56 15.57 84.43 28.23

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