Table 2 Composition of aqueous solutions (the aqueous phase samples was additionally used in our previous work25).

From: Experimental investigation of CTAB modified clay on oil recovery and emulsion behavior in low salinity water flooding

No.

Solutions

NaCl (g/L)

Na2SO4 (g/L)

CaCl2 (g/L)

MgCl2.6H2O (g/L)

KCl (g/L)

Clay (g/L)

CTAB (g/L)

TDS (ppm)

1

SW

28.323

4.936

1.630

10.520

1.032

2

0.386

46,431

2

SW2d

14.161

2.468

0.815

5.260

0.516

2

0.386

23,215

3

SW2d.2Ca

14.161

2.468

3.260

5.260

0.516

2

0.386

25,665

4

SW2d.4Ca

14.161

2.468

6.520

5.260

0.516

2

0.386

28,925

5

SW2d.2Mg

14.161

2.468

0.815

21.040

0.516

2

0.386

39,000

6

SW2d.4Mg

14.161

2.468

0.815

42.080

0.516

2

0.386

60,040

7

SW2d.2SO4

14.161

9.872

0.815

5.260

0.516

2

0.386

30,624

8

SW2d.4SO4

14.161

19.744

0.815

5.260

0.516

2

0.386

40,498

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