Sample number

Well depth (m)

Porosity (%)

Kelvin permeability (×10−3 μm2)

KCl brine permeability

before acidification (×10−3 μm2)

KCl brine permeability after acidification (×10−3 μm2)

Acid sensitivity index

Acid sensitivity

517-5

739.85

15.5

30.0

4.44

4.39

1%

Moderately weak

216-3

739.71

8.8

0.861

0.156

0.143

8%

Moderately weak

145-9

739.58

13.8

10.772

10.591

9.184

5%

Moderately weak

117-1

738.61

16.4

18.924

9.267

9.156

2%

Moderately weak