Suppression of coherent noise in seismic data

Details Suppression of coherent noise in seismic data Suppression of coherent noise in seismic data

1989-01-31

1990-03-20

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367 46, G01V 136

Patent

active

049107160

ABSTRACT:
A method is disclosed to suppress coherent noise in seismic data. Based on the Karhunen-Loeve Transform, this method trains on a region containing undesired coherent noise. Eigenvectors determined from the convariance matrix of that noise are used to reconstruct the noise throughout the data set. Subtracting the reconstruction from the original data leaves a residual in which the coherent noise has been suppressed. Applying this method to a shot record of marine seismic data illustrates that the procedure does suppress noise on actual seismic data.

REFERENCES:
patent: 4397006 (1983-08-01), Galbraith, Jr.
patent: 4468761 (1984-08-01), Kietsch
"Applications of Full an Partial Karhunen--Loeve Transformation to Geophysical Image Enhancement", Marchisio et al., 58th Annual Soc. Explor. Geophys. Mtg., 10/88.
"New Image Reconstruction Technique for S/N Enhancement in Seisnic Data," Agouridis et al., 58th Annual Soc. Explor. Geophy. Int. Mtg., 10/88.
"S/N Ratio Enhancement in Multichannel Seismic Data via the KLT," Jones et al., Geophysical Prospety, vol. 35, #1, pp. 12-32, 1987.

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