Method for identifying anomalous noise amplitudes in seismic...

Details Method for identifying anomalous noise amplitudes in seismic... Method for identifying anomalous noise amplitudes in seismic...

G - Physics

01

V

349/17

G01V 1/28 (2006.01)

Patent

CA 1329647

ABSTRACT OF THE DISCLOSURE A method for identifying anomalous noise amplitudes in seismic records by deriving a measured amplitude factor over predetermined periods of time or time windows for a predetermined number of traces comprising the records is disclosed. A noise-free amplitude factor for the same periods of time and number of traces is also computed using a Gauss-Siedel method of matrix inversion. A ratio of the measured and noise-free amplitude factors is made to determine a correction factor which is compared to a used defined threshold value for determining a presence of anomalous noise amplitudes in the seismic records. Based on the comparison of the correction factor to the threshold value, the user determines whether to suppress or correct traces experiencing the anomalous noise amplitudes.

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