СПОСОБ ДЛЯ ПОДАВЛЕНИЯ СИСТЕМАТИЧЕСКИХ АМПЛИТУДНЫХ ВАРИАЦИЙ СИГНАЛОВ

摘要

A method for correcting seismic data for periodic distortion introduced by acquisition parameters by filtering modified unitary transform data. A vertical transform is applied to seismic data to obtain frequency-space seismic data. These data are decomposed into an amplitude component and a phase response component. The phase response component is saved for the inverse process. A horizontal transform is applied to the amplitude component of the F-X data to obtain modified transform data. Because this transformation is performed in the X direction, it is here also referred to as the horizontal forward Fourier transformation. A K filter based on the period of the energy to be suppressed or eliminated is applied to this F-K data. The K filter may be, for example, a notch filter or any suitable filter. The data are then inverted to obtain T-X data with distortion suppressed or eliminate.