In
order to quickly extract reservoir characteristics from seismic spectral
decomposition data, the authors present a data fusion method to map features in
both peak amplitude and peak frequency attributes, which uses
frequency-dependent adaptive bandwidth-varied filter of Gaussian basis function.
Such basis function can reflect the inherent characteristics of seismic signal
in time-frequency domain, i.e. higher frequency resolution at lower frequency
and lower frequency resolution at higher frequency. Then, the authors choose
the peak amplitude as the weighting, and map the two spectral decomposition
attributes into one true color fusion volume. The field example demonstrates
that it can delineate reservoir spatial distribution, its geometry, its
relative thickness and its petroliferous feature. It is feasible to quickly
extract geologic feature of interests and improve the efficiency in
interpretation.
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