High fidelity rotation method and system

G - Physics – 01 – V

Patent

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G01V 1/28 (2006.01)

Patent

CA 2367455

A method and system for processing first and second seismic traces includes rotating the first seismic traces and the second seismic traces to forty-five degrees in the time domain. In one embodiment, the rotated first time domain traces and second time domain traces are transformed to the frequency domain to obtain an amplitude spectrum for each rotated first time domain trace and an amplitude spectrum for each rotated second time domain trace. The traces are manipulated at this angle and the manipulated traces are then re-rotated to a desired orientation.

Cette invention se rapporte à un procédé et à un système servant à traiter des premières et des secondes traces sismiques et consistant à mettre en rotation les premières traces sismiques et les secondes traces sismiques sur 45 DEG dans le domaine temporel. Dans un mode de réalisation, les premières traces mises en rotation dans le domaine temporel et les secondes traces mises en rotation dans le domaine temporel sont transformées dans le domaine fréquentiel, pour produire un spectre d'amplitude pour chaque première trace mise en rotation dans le domaine temporel et un spectre d'amplitude pour chaque seconde trace mise en rotation dans le domaine temporel. Les traces sont alors manipulées selon cet angle et les traces ainsi manipulées sont mises à nouveau en rotation jusqu'à l'orientation souhaitée.

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