Page 389 - Petrophysics 2E

REFERENCES 3 57

exit (bottom) end of core (centrifugal measurement of
capillary pressure)
inlet (top) end of core (centrifugal measurement of capillary
pressure)
maximum saturation of mercury injection
irreducible wetting phase saturation
residual oil saturation
average water saturation
minimum saturation of mercury after withdrawal from a core
water saturation at residual oil saturation
water saturation at the inlet end of the core (centrifugal
measurement of capillary pressure)
velocity (m/s, cm/s, ft/s)
angular velocity of centrifuge rotor
volume
pore volume

GREEK SYMBOLS

@ angle
CP contactangle
o interfacial tension (N/m)
p viscosity (Pa*s, cP)
po density of oil
pw density of water

REFERENCES

1. Plateau, J. A. F. “Statique Exp6rimentale et Theorique des Liquides Soumis
aux Seules Forces Molkulaires.” (Experimental and Theoretical Researches
on the Figures of Equilibrium of a Liquid mass Withdrawn from the Action
of Gravity.) Smithsonian Institute Annual Reports: Series No. 1, 1863,
pp. 207-285; Series No. 2, 1864, pp, 285-369; Series No. 50, 1865,
pp. 411-435; Series No. 6, 1866, pp. 254-289.
2. Leverett, M. C. “Capillary Behavior in Porous Solids.” Trans. AIME, Vol.
142, 1941, pp. 152-169.
3. Leja, J. Suvace Chemistry of Froth Floatation. Plenum Press, New York,
1982,758 pp.
4. Purcell, W. R. “Capillary Pressures-Their Measurement using Mercury and
the Calculation of Permeability Therefrom.” Trans. AZME, Vol. 186, 1949,
pp. 39-1 10.