Method of seismic wave amplitude normalization

摘要

Disclosed is a method of processing geological seismic reflection data to compensate for lateral variations in the attenuation effect which the weathered layer has on the reflected seismic energy waves as they approach an array of detectors at the surface. Absolute amplitudes of the waves are summed for each trace throughout a test window at the depth to be explored. The amplitudes are normalized by taking the ratio of each sum to the sum of the absolute amplitudes obtained throughout a standard window, in the corresponding trace. In a particular embodiment disclosed, the test window scans each trace in increments, and the absolute amplitude sum obtained at each position is normalized to the standard window in that trace. The ratios thus obtained, when plotted, reveal the positions of large-amplitude reflecting strata without weathered-layer distortion.