Page 377 - Petrophysics 2E

PORE SIZE DISTRIBUTION 345

0 025 0.5 0.75
SATURATION (AVE. FROM CENTRIFUGE DATA)

1 * Pc(data) = f(Sa) e-*-- Pc(HYPER) = f(Sa) 1

0 0.25 0.5 0.75

SATURATION (WATER)
- = @a) .-*-- Pc = f(S1)
Pc
(b)
Figure 5.20. (a) Comparison of experimentally determined and smoothed curves
of capilkzry pressure versus average saturation obtained by regression analysis.
(6) Capillary pressure for a Berea sandstone as a function of the average and inlet
saturations for centrijiuge-dertved data.