Bandwidth-equalization and phase-matching of time-lapse seismic datasets

James Rickett

james@sep.stanford.edu

ABSTRACT

Time and frequency domain methods for equalizing bandwidth and making phase corrections are tested on synthetic time-lapse data. Cross-equalization filters are primarily designed to equalize amplitude spectra by decreasing the bandwidth of the higher frequency survey to that of the lower frequency survey. I also tested approaches that tried to maximize the bandwidth of the difference between surveys, in such a way to avoid amplifying noise.