Table 2 The wettability characters in the difference pore.

From: The effect of the displacement pressure on migration of fluid during the imbibition for tight oil reservoir

Sample

Micropore

Mesopore

Macropore

Water wet pore

(%)

Oil wet pore(%)

Water wet (%)

Oil wet(%)

Water wet (%)

Oil wet(%)

Water wet (%)

Oil wet(%)

1#

12.30

4.61

0

46.15

30.76

6.15

43.10

56.90

2#

13.33

12.22

7.77

26.67

27.77

12.22

48.00

52.00

3#

22.98

9.19

0

37.93

21.83

8.04

44.80

55.20

4#

9.67

9.67

0

37.09

27.41

16.12

37.10

62.90

average

14.57

8.92

1.94

36.96

26.94

10.63

43.25

56.75

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