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 |