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1. (WO2016063125) IMAGING THE NEAR SUBSURFACE WITH SURFACE CONSISTENT DECONVOLUTION OPERATORS

Pub. No.:    WO/2016/063125    International Application No.:    PCT/IB2015/002121
Publication Date: Fri Apr 29 01:59:59 CEST 2016 International Filing Date: Wed Oct 21 01:59:59 CEST 2015
IPC: G01V 1/36
Applicants: CGG SERVICES SA
Inventors: RETAILLEAU, Matthieu
Title: IMAGING THE NEAR SUBSURFACE WITH SURFACE CONSISTENT DECONVOLUTION OPERATORS
Abstract:
A method for imaging a near subsurface (500) computes for each trace in a plurality of traces an average amplitude and an auto-correlation spectrum within a pre-determined time window (504) and performs surface decomposition of autocorrelation spectra and average amplitudes for all seismic traces in the plurality of traces to decompose the seismic traces into a plurality of components (506). A plurality of predictive deconvolution operators is derived for the auto-correlation spectra of the plurality of components (508), and an image of the near subsurface is generated using the predictive deconvolution operators (512).