Angle-dependent inversion
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| Synthetic seismogram tie for the low-angle (~10°) near-stack. The synthetic seismogram was generated by using the impedance log curve. The correlation seems to be reasonably good. | Synthetic seismogram tie for the high-angle (~30°) far-stack. The synthetic seismogram was generated by using the computed EI (30°) log curve. The correlation seems to be reasonably good. Notice the weakening of the amplitudes at the location of the orange arrows. |
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Top: Segment of the acoustic impedance section (with the overlaid AI log) shows anomalously low values of impedance at the gas-producing zone (yellow highlighted zone). Below: Equivalent segment from EI (30°) section showing the anomaly as much more pronounced. |
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