Page 92 - Reservoir Formation Damage
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Petrophysics-Flow Functions and Parameters 75
IflflkWalf-We
100 I. OH- Wat
(a)
0.4 0.6 0.8 1.0
0.00
(b)
0.0 0.2 0.4 0.6 0.8 1.0
0.05
(c)
-0.10
1.0
Sw
Figure 4-5. Capillary pressure curves for a) 100% water-wet and 100% oil-
wet systems, b) three fractionally-wet systems, and c) three mixed-wet
systems (McDougall and Sorbie, ©1995 SPE; reprinted by permission of the
Society of Petroleum Engineers).
