Abstract

Spectral decomposition provides a unique method of utilizing seismic data and the discrete Fourier transform for imaging and mapping temporal bed thickness and geological discontinuities over 3D seismic covered areas. When seismic data is transformed into frequency domain using discrete Fourier transform, the amplitude spectra delineate temporal bed thickness variability, while the phase spectra indicate lateral geologic discontinuities. This signal analysis approach may be used successfully to delineate geobody in 3D seismic data such as channel sands and structural settings involving complex fault systems .