Page 209 - Basic Well Log Analysis for Geologist
P. 209
LOG IM TLRPRETATION CASE STUDIES
Effect of grain size
100
90F- °
Q
sor- °
Q
7p S
a
oP
6 _—
Oo
SW % Sor NX
\,
40k
30+
\ VFG Figure 95.
20+
10k \ CG versus porosity (@) crossplot, Cretaceous Pictured
F-MG
Grain size determination by water saturation (S,,)
i
pot
tt
i
0 | Cliffs Sandstone, San Juan basin.
3 4 5 6 78910 20 3050
G %
Krg
100
90
60
70
60
SW % 50
40
30 Figure 96.
saturation (S,,) crossplot for determining relative
20+ {rreducible water saturation (Sy ;,,) versus water
or permeability to gas (K,,), Cretaceous Pictured Cliffs
boa
ddd
Sandstone, San Juan basin.
o © 20 3% 40 10 © DW HM W
Swirr %
194
