Surface-consistent amplitude and deconvolution simultaneous joined inversion

摘要

Methods and systems for a surface-consistent amplitude and deconvolution simultaneous joined inversion are described. A one-pass estimation using input trace data for generating gain and deconvolution operator based on a least squares iteration method. A series of iterations are performed simultaneously and independently estimating amplitude scalars and autocorrelation spectra with a common convergence criterion. The gain and deconvolution operator can further be used to correct the input trace data for pre-stack or stack imaging.

主权项

1. A method, stored in a memory and executing on a processor, for estimating a surface-consistent amplitude correction and a deconvolution operator, said method comprising:
simultaneously utilizing a plurality of input seismic traces from recorded seismic data, in a single pass, to calculate an amplitude value and an autocorrelation spectrum, within an associated time window, for each of said plurality of input seismic traces; transforming said amplitudes and said autocorrelations to a log domain and summing for each surface-consistent component value to create an initial amplitude log scalar and an initial spectra log-frequency sum estimate; performing one or more iterations to simultaneously and independently estimate an improved amplitude log scalar and a spectra log-frequency value, with a shared solver, for each surface-consistent component until a shared predetermined stop condition for said estimating is met; and outputting one or more of an estimated surface-consistent amplitude correction and a deconvolution operator to be used to correct the plurality of input seismic traces by reconstructing an amplitude scalar and a autocorrelation spectrum from said plurality of input seismic traces using surface-consistent component values, after said stop condition is met.