Table 1 The composition of brines and their physical characteristics.

From: Theoretical and experimental investigation of the impact of oil functional groups on the performance of smart water in clay-rich sandstones

 

Na (mM)

Ca (mM)

Mg (mM)

Cl (mM)

SO4 (mM)

IS (mM)

TDS (ppm)

pH

viscosity at 60C

FW

3559.6

180.2

209.9

4198.9

70.4

4800

250,000

4.9

0.45

Na10SW

10.0

  

10.0

 

10

585

5.9

0.41

Ca10SW

0.0

10.0

 

20.0

 

30

1110

5.8

0.42

Na50SW

50.0

  

50.0

 

50

2925

5.6

0.43

Ca50SW

 

50.0

 

100.0

 

150

5550

5.6

0.43

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