Frequency gather at the wellbore with the full-spectrum
trace as an overlay. The gather shows increasing frequency to the
right with warm colors for higher amplitude. Frequency normalization
has been used to remove the seismic wavelet. Top of pay zone shown
at the dotted white line.
Figure 3b, 3c:
Frequency panels of the seismic line shown in figure
1 at 10 Hz and 36 Hz.