Method for velocity analysis using waveform inversion in...

Details Method for velocity analysis using waveform inversion in... Method for velocity analysis using waveform inversion in...

G - Physics

01

V

G01V 3/08 (2006.01) G06F 17/14 (2006.01)

Patent

CA 2690373

A Laplace transform system comprising a processor, a measured time domain wavefield, a velocity model, and Laplace damping constants, wherein the processor is programmed to calculate a substantially about zero frequency component of a Fourier transform of a time domain damped wavefield, wherein the time domain damped wavefield is damped by the Laplace damping constants to obtain long wavelength velocity information for deeper subsurface regions.

L'invention concerne un système de transformée de Laplace comprenant un processeur, un champ d'ondes de domaine temporel mesuré, un modèle de vitesse et des constantes d'amortissement de Laplace. Le processeur est programmé pour calculer une composante de fréquence sensiblement proche de zéro d'une transformée de Fourier d'un champ d'ondes amorti dans le domaine temporel. Le champ d'ondes amorti dans le domaine temporel est amorti par les constantes d'amortissement de Laplace pour obtenir des informations de vitesse de longue longueur d'onde pour des régions souterraines plus profondes.

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