Computation of Q-derived static corrections from seismic data

Details Computation of Q-derived static corrections from seismic data Computation of Q-derived static corrections from seismic data

1995-02-27

1996-09-10

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 47, 367 49, 364421, G01V 130, G01V 132

Patent

active

055552188

ABSTRACT:
The amplitude spectrum is generated within a selected time window of a seismic time scale recording. The rate of change, Q, of the natural logarithm of the signal amplitude is measured with respect to frequency. A Q-derived static time shift is computed and applied to the selected seismic time scale trace to correct the raw seismic times for dispersion-induced time distortion. Amplitude-correction and phase-correction filters are applied to the static-corrected trace to provide a new time scale trace corrected for velocity dispersion which is processed to provide a physical model of the subsurface of the earth.

REFERENCES:
patent: 4729101 (1988-03-01), Hanson et al.
patent: 5479376 (1995-12-01), Gonzalez et al.
Dai et al, 64th Annu. SEG Int. Mtg. Oct. 23, 1994, pp. 1418-1421, Pap No. SM92.

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