Geology Reference
In-Depth Information
Figure 9.8 Example of model-based
inversion; final impedance section,
showing tight (high impedance) sands in
orange and porous (low impedance)
sands in green (after Pharez et al., 1998 ).
1.5
1.6
500m
1.4
Figure 9.9 Comparison of inverted
impedance result with impedance
calculated from well logs (after Bach et al.,
2000 , with kind permission from Springer
Science and Business Media).
1.5
1.6
1.7
1.8
1.9
2.0
Acoustic
impedance
Well log data
Inversion result
3.00
13.00
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
Acoustic impedance (km/s.g/cc)
203
 
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