Wavelet based intercept attribute for seismic exploration

Details Wavelet based intercept attribute for seismic exploration Wavelet based intercept attribute for seismic exploration

2007-08-27

2009-11-10

Bolda, Eric (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

C702S017000

Reexamination Certificate

active

07616524

ABSTRACT:
A wavelet-based method for improving the quality of seismic data utilizing the intercept determined by applying least squares regression to the wavelet transform of a seismic trace. The intercept is calculated for every time point of the wavelet transform for each seismic trace. The intercepts are then plotted versus time or depth. These plots are used in place of seismic traces themselves to create two dimensional and three dimensional seismic section images. In one embodiment, the real and imaginary portions of the selected wavelet transform are weighted to generate a finer representation of the intercept. In another embodiment, a minimum amplitude value is utilized to establish a noise floor, thus stabilizing the regression calculation. In yet another embodiment, a taper of the amplitude is applied to wavelet enhance the resolving power of the wavelet.

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