Recent reservoir studies involving spectral decomposition on various data sets from the Burgos and Macuspana basins of Mexico document the usefulness of this method as another way to uncover the effects of hydrocarbon accumulations on seismic data. Three such effects are illustrated in this article; attenuation of seismic waves passing through the reservoir, preferential reservoir illumination, and differential reservoir reflectivity.

Such phenomena can be clearly seen in these seismic studies only because of the use of a new method of spectral decomposition, the wavelet transform. Traditionally, spectral decomposition has used various techniques that require the use of a time window...

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