Drilling fluid

AV/mPa∙s

PV/mPa∙s

YP/Pa

FLAPI/mL

Kf/

Kf*/%

4% Bentonite

8.5

6.0

2.5

21.0

0.452

-

4% Bentonite + 2% LWFD

8.0

6.0

2.0

20.8

0.178

60.6

Polymer Drilling Fluid

31.5

23.5

8.0

5.1

0.132

-

Polymer Drilling Fluid + 2% LWFD

30.5

21.5

9.0

4.9

0.090

31.8

Cation Drilling Fluid

35.5

25.0

10.5

5.6

0.145

-

Cation Drilling Fluid + 2% LWFD

34.5

25.0

9.5

5.3

0.100

31.0