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This chapter is from the book

Nomenclature

Ct

formation conductivity

Cwe

effective conductivity

Cw

formation water conductivity

l

length of core plug

m

cementation factor

n

saturation exponent

r

radius of core plug

Sw

water saturation, fraction

Vcbw

volume of clay-bound water

Vclay

volume of clay

VB

bulk volume

Vp

pore volume

Vsh

shale volume

X

function in Eq. 1.20

f

porosity

f d

density-derived porosity

f dsh

density-derived shale porosity

f e

effective porosity

f n

neutron-derived porosity

f ncl

neutron-derived porosity in clay

f nsh

neutron-derived porosity in shale

f s

sonic-derived porosity

f sh

shale porosity

f scl

sonic-derived porosity in clay

f ssh

sonic-derived porosity in shale

f t

total porosity

r b

bulk density

r f

fluid density

r ma

rock matrix density

Dt

formation interval transit time

Dtf

fluid transit time

Dtma

rock matrix transit time

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