Cgg Services Sas

Cggveritas Services S.a.

Cgg Services Sa

Katia Garceran

David Le Meur

Guillaume Henin

Anne Rollet

Frédérique Bertin

André Lévêque

Methods and systems performing joint inversion determination of surface-consistent amplitude corrections are provided. A method includes receiving a seismic data set including P-P data and P-S data, and preparing the P-P data and the P-S data for a joined inversion to produce prepared P-P data and prepared P-S data. The method further includes performing a joined inversion on both the prepared P-P data and the prepared P-S data to calculate final surface consistent scalars. The method also includes outputting a corrected P-P trace determined from the P-P data and a P-P gain obtained from the final surface consistent scalars, and a corrected P-S trace determined from the P-S data and a P-S gain obtained from the final surface consistent scalars.

Methods and systems of joined inversion determination of surface-consistent amplitude corrections

Methods and apparatuses compute and apply surface-consistent frequency-dependent phase corrections, to traces extracted from seismic survey data, using a multi-scale iterative approach.

Methods and apparatus for applying surface consistent phase-dependent phase corrections

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.

Surface-consistent amplitude and deconvolution simultaneous joined inversion

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Saint Cheron, France

Katia Garceran