Number

Drilling fluid

AV/MPa·s

PV/MPa·s

YP/Pa

FL/ml

Filter loss rate/%

Density

g/cm³

0#

Base pulp

11.0

6.5

4.6

26.0

—

1.03

1#

0.1%xy-27 + 0.1%FA-367 Base pulp

13.0

9.0

4.0

20.1

22.1

1.04

2#

0.1%xy-27 + 0.2%FA-367 Base pulp

17.0

13.5

3.5

16.3

36.7

1.04

3#

0.1%xy-27 + 0.3%FA-367 Base pulp

21.8

15.0

6.8

15.3

40.5

1.04

4#

0.2%xy-27 + 0.1%FA-367 Base pulp

13.8

11.0

2.7

17.9

30.5

1.04

5#

0.2%xy-27 + 0.2%FA-367 Base pulp

15.0

11.0

4.0

15.9

39.2

1.04

6#

0.2%xy-27 + 0.3%FA-367 Base pulp

20.0

14.0

6.3

13.5

47.5

1.05

7#

0.3%xy-27 + 0.1%FA-367 Base pulp

12.0

11.0

1.2

21.4

17.1

1.05

8#

0.3%xy-27 + 0.2%FA-367 Base pulp

15.0

13.0

2.1

19.9

22.8

1.05

9#

0.3%xy-27 + 0.3%FA-367 Base pulp

19.0

13.5

5.5

18.5

28.3

1.06