1. Classes of seismic attributes?
Multi-Trace Types
Classes of seismic attributes?
Trace A
Trace B
Multi-Trace
Dip / azimuth
Coherency
Slide 13
Another class of seismic attribute involves the simultaneous analysis more than one trace
For example, an interpreter will map (correlate) a peak or trough through an area
Software can then calculate two attributes
the dip of the interpreted horizon (in msec/trace)
the azimuth – the compass direction of the maximum dip direction (e.g., 15° East of North)
Coherency is a popular multi-trace attribute in industry
it is a measure of similarity between a window of one trace relative to its neighboring trace or traces
we discussed coherency in the structural lecture (Unit 10)
it is a volume-based attribute – not needing an interpreted horizon
Correlation Window
R2 = 0.92
Amplitude A
Amplitude B
Courtesy of ExxonMobil
L Seismic Attributes