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Line 78:
Line 78: − + Line 86:
Line 86: − +
→Amott method
! || Water Wet || Neutrally Wet || Oil Wet
! || Water Wet || Neutrally Wet || Oil Wet
|-
|-
| Contact angle || || ||
| colspan=4 align=center | Contact angle
|-
|-
| Minimum || 0° || 60 to 75° || 105 to 120°
| Minimum || 0° || 60 to 75° || 105 to 120°
| USBM wettability index || W near 1 || W near 0 || W near -1
| USBM wettability index || W near 1 || W near 0 || W near -1
|-
|-
| Amott wettability index || || ||
| colspan=4 align=center | Amott wettability index
|-
|-
| Displacement by water ratio || Positive || Zero || Zero
| Displacement by water ratio || Positive || Zero || Zero