Coherence attributes
Coherence computes a measure of similarity between adjacent traces. Identification and mapping of channel edges, reefs, faults and fracture systems in 3D volumes becomes so much easier with the coherence volume. Structural and stratigraphic interpretation of seismic data gets facilitated by using a coherence volume. Arcis offers coherence computation services based on Energy Ratio algorithm (a modified eigen-decomposition of covariant matrices approach). This algorithm has generated results better than those from the standard semblance as well as eigen-decomposition based algorithms.
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Coherence using semblance without dip-steering option |
Coherence using Energy Ratio |
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Coherence using semblance
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Coherence (Energy Ratio) after PC-filtering
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(Data courtesy: Olympic Seismic, Calgary)
