Table 1.
Ex-situ enhanced oil recovery with combined effect of biosurfactant and biopolymer.
| Trail no | Soi % | OOIP (ml) | Initial oil recovery |
Sor |
Biosurfactant: biopolymer ratio | AOR |
|||
|---|---|---|---|---|---|---|---|---|---|
| (ml) | % | (ml) | % | (ml) | % | ||||
| 1 | 45.84 | 11 | 5 | 45.45 | 6 | 54.54 | 1:1 | 1 | 16.66 |
| 2 | 60 | 8 | 4.5 | 56.25 | 3.5 | 43.75 | 1:2 | 1.2 | 34.28 |
| 3 | 50 | 10 | 6 | 60 | 4 | 40 | 1:3 | 1 | 25 |
| 4 | 40 | 15 | 9 | 60 | 6 | 40 | 1:4 | 0.8 | 13.33 |
| 5 | 58.33 | 14 | 8 | 57.2 | 6 | 42.8 | 1:5 | 0.6 | 10.8 |
Soi - Initial oil saturation.
OOIP - Original Oil In Place.
Sor - Residual oil saturation.
AOR - Additional Oil Recovery.