Number

Drilling fluid

1 h/mm⁻²

2 h/mm⁻²

3 h/mm⁻²

4 h/mm⁻²

0#

Amine-based polymer drilling fluid

21.7

27.2

33.6

38.5

1#

Amine-based polymer drilling fluid + 4.0%NaCl

22.8

28.1

34.7

39.1

2#

Amine-based polymer drilling fluid + 8.0%NaCl

23.5

29.4

36.4

43.2

3#

Amine-based polymer drilling fluid + 12.0%NaCl

25.2

31.8

38.8

44.5

4#

Amine-based polymer drilling fluid + 16.0%NaCl

26.4

33.3

40.1

46.7

5#

Amine-based polymer drilling fluid + 20.0%NaCl

27.3

35.5

43.8

50.6

6#

Amine-based polymer drilling fluid + 24.0%NaCl

30.6

38.3

47.1

53.2