Analysis project

Sample No

Permeability damage rate %

Degree of damage

Empirical conclusion

Speed sensitivity

1-013F

118.8

strong

Critical velocity: 0.1 mL/min

2-007F

569.31

strong

Critical velocity: 0.1 mL/min

3-023F

60.6

Medium to strong

Critical velocity: 0.1 mL/min

Water sensitivity

1-013H

77.97

strong

Critical salinity: 2500 mg/L

2-007H

63.47

Medium to strong

Critical salinity: 1600 mg/L

3-023H

74.47

strong

Critical salinity: 1500 mg/L

Acid sensitivity

1-013D

22.93

weak

/

2-007D

19.61

weak

/

3-023D

21.32

weak

/

Alkali sensitivity

1-013E

71.2

strong

Critical pH: 8.5

2-007E

54.6

Medium to strong

Critical pH: 11

3-023E

39.78

Moderately weak

Critical pH: 10

Stress sensitivity

1-013C

91.7

strong

/

2-007C

73.2

strong

/

3-023I

52.8

Medium to strong

/