Thin-bed Reflectivity Inversion
Thin-bed reflectivity can be used to boost up the frequency content, by flattening the frequency
spectral of the input seismic data, or by extending its bandwidth in an amplitude friendly way, and extract more information from it.
Another useful application is while performing simultaneous inversion, where the near-, mid- and far-angle stacks
The workflow for thin-bed reflectivity inversion entails the extraction of time-varying wavelets from the input seismic data, and
Thin-bed reflectivity filtered to a bandwidth higher than the input seismic data
The output of the inversion process can be viewed as spectrally broadened seismic data, retrieved in the form of broadband reflectivity data that can be filtered back to any bandwidth that represents useful information for interpretation purposes. Thin-bed reflectivity serves to provide the reflection character that can be studied, by convolving the reflectivity with a wavelet of a known frequency bandpass. This not only provides an opportunity to study reflection character associated with features of interest but also serves to confirm its close match with the original data. The figure below shows a segment of a seismic section, its equivalent derived reflectivity and the derived reflectivity with a wavelet of a higher bandpass.
Relative acoustic impedance from thin-bed reflectivity
Instead of correlating the tops and bottoms of formation boundaries on seismic reflection data, with the
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