Table 2 Effect of salinity on the interfacial tension (IFT) between crude oil and the G2-C12 dendrimer surfactant solution at 70 °C.

From: Enhanced oil recovery from sandstone reservoir using cationic hyperbranched polyamidoamine dendrimer surfactant flooding under real reservoir conditions

Salinity (ppm)

IFT (mN/m)

±SD (mN/m)

0

5.2

0.3

500

4.8

0.2

1000

4.5

0.2

2000

4.2

0.1

5000

4.7

0.2

10,000

5.1

0.3

25,000

6.2

0.3

50,000

7.3

0.4

100,000

9.0

0.4

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