Page 223 - Petrophysics 2E

196 PETROPHYSICS: RESERVOIR ROCK PROPERTIES

NOMENCLATURE

internal surface area
surface area, acres
formation volume factor 0, bbl/STB and SCF/ft3
inverse of matrix coefficients bnj
volume vector
conductivity
diameter of grain particles
performance data
calculated values of performance data
observed values of performance data
depth
deviation
frequency
cumulative frequency
formation resistivity factor
initial gas in place
formation thickness
zonation index
secondary porosity index
difference between two successive indices
permeability
horizontal permeability
number of permeabilities
permeability at 84.1 % cumulative sample
vertical permeability
core length, cm
Lorenz permeability coefficient
cementation factor or exponent
number of capillary tubes
initial oil in place
number of permeability data
number of permeability data in zone i
number of zones
threshold pressure of capillary pressure curve
pressure
pressure loss or difference
displacement pressure
shut-in pressure
flow rate
radius
pore radius
random number
uniformly distributed random number
true formation resistivity, ohm-m
standard deviation