Method for restoring and extrapolating seismic traces

Details Method for restoring and extrapolating seismic traces Method for restoring and extrapolating seismic traces

1990-02-05

1990-08-28

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 38, 364421, G01V 128, G01V 136

Patent

active

049531395

ABSTRACT:
A seismic record is enhanced through trace restoration and extrapolation. A set of traces surrounding a missing trace or adjacent an edge of the seismic record are transformed into the frequency domain using a fast Fourier transform. Each frequency of the resultant x-f representation a series of complex numbers, one corresponding to each trace, is selected. Autoregressive model coefficients are estimated for this complex series using a recursive least squares method. A complex number is estimated for trace restoration and extrapolation from the series of complex numbers and autoregressive coefficients. After all frequency components are thus processed restored or extrapolated traces are obtained by an inverse Fourier transform.

REFERENCES:
patent: 4829487 (1989-05-01), Malloy
patent: 4860265 (1989-08-01), Laster et al.
patent: 4884248 (1989-11-01), Laster et al.

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