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Table 7 Recovery factor after surfactant flooding at laboratory and reservoir temperature

From: Evaluation of modified cashew nutshell liquid as natural surfactants for chemical flooding in sandstone oil reservoirs

Parameter

Laboratory temp. (22 °C)

Reservoir temp. (80 °C)

Pore volume (ml)

14.4

14.4

OOIP (ml)

11.0

11.0

Oil recovered during brine flooding (ml)

7.00

7.00

Recovery factor after secondary flooding (ml)

63.6

63.6

Residual oil volume (ml)

4.00

4.00

Oil recovered after surfactant flooding (ml)

1.30

1.00

Recovery factor after EOR (%)

11.8

9.10

Displacement efficiency (%)

32.5

25.0