Geoscience Reference
In-Depth Information
Saturation vs Compressional Velocity
(a)
11 600
11 500
11 400
Oil
11 300
V
p
11 200
11 100
11 000
10 900
Gas
10 800
10 700
10 600
10 500
0
0 .1
0.2
0 .3
0.4
0 .5
0.6
0 .7
0.8
0 .9
1
Water Saturation
Saturation vs Acoustic Impedance
(b)
8.000
7.800
7.600
Oil
AI
7.400
Gas
7.200
7.000
6.800
6.600
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Water Saturation
Fig. 5.18
(a) Calculated curves of P velocity (ft/s) versus water saturation for oil and gas cases in
an example sandstone; (b) calculated curves of P impedance (km/s
ยท
g/cm
3
) versus water saturation
for oil and gas cases. In real rocks, a water saturation less than 0.15 is unlikely.
