Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1987-03-09
1988-10-25
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 47, 364421, G01V 136
Patent
active
047808594
ABSTRACT:
Method to process seismic data to yield useful information regarding the subsurface area explored. Seismic data which is acquired from the seismic exploration is autocorrelated and the amplitude spectrums estimated, stacked and averaged to reduce the effects of nonwhite reflectivity upon the data. The amplitude spectrum is cepstral windowed a first time to reduce the effects of reflectivity leakage on the amplitude spectrum, amortized at both low and high frequencies so that the amplitude spectrum will approximate the analog wavelet and cepstral windowed a second time to eliminate any remaining rapidly varying components of the amplitude spectrum. The resultant amplitude spectrum is then used to estimate the phase spectrum for the wavelet and a two-sided least squares filter is then designed to shape the estimated seismic wavelet into a zero-phase, low sidelobe output wavelet.
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Hadidi Mohamed T.
Jurkevics Andrejs
Linville, Jr. Andrew F.
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Swann Tod R.
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