Patent Document ID: 5392255
Application ID: 08075939
Patent Flag: 1

Claim One:
1. A method of processing seismic data including a collection of time/amplitude trace response functions located at least in one spatial dimension, and a velocity field function in another spatial dimension, to migrate said time/amplitude data into depth/amplitude data, comprising the steps of: (a) applying a wavelet transform to all frequency components of a velocity field downward continuation operator to define a downward continuation operator in the wavelet domain; (b) applying a wavelet transform of the spatial dimension to the collection of trace response functions, after the time/amplitude traces have been transformed through a standard fast Fourier transform method into transformed frequency/amplitude traces; (c) applying the operator obtained in step (a) for each frequency component to the transformed traces obtained in step, (b) to define a resultant collection of transformed traces in the wavelet domain for all desired depths; (d) applying the inverse wavelet transform on the spatial dimension, and defining the downward continued field in the spatial domain; (e) summing all frequency components at all depths to define the resulting depth/amplitude data; and (f) displaying the amplitude of the resultant depth/amplitude data as a function of depth.