Pseudo logs to improve stratigraphic correlation between...

Details Pseudo logs to improve stratigraphic correlation between... Pseudo logs to improve stratigraphic correlation between...

G - Physics

01

V

G01V 1/28 (2006.01) G06F 19/00 (2011.01)

Patent

CA 2740428

In order to improve the tie between depositionally equivalent beds relative to two or more basins detected within a multi dimensional seismic volume of interest, pseudo logs based on the average of attributes derived from seismic impedance where the compaction trend is not present are created for each basin. The mean is taken over all available azimuths, following the structural variations of introduced micro layers. The correlation between the pseudo log relative to each basin enable a more reliable interpretation between the different basins from which sound exploration decision can be made. Such a process has been successfully applied to seismic data acquired in deep water environment.

L'invention concerne l'amélioration du lien entre les lits équivalents en termes de dépôt par rapport à deux bassins ou plus détectés dans un volume sismique multidimensionnel intéressant, des pseudo-diagrammes basés sur la moyenne des attributs tirés de l'impédance sismique, dans lesquels la tendance de compactage n'est pas présente, étant créés pour chaque bassin. La moyenne est prise sur tous les azimuts disponibles, suivant les variations structurelles des microcouches introduites. La corrélation entre le pseudo-diagramme par rapport à chaque bassin permet une interprétation plus fiable entre les différents bassins à partir de laquelle une décision d'exploration sonore peut être prise. Un tel procédé a été appliqué avec succès aux données sismiques acquises dans un environnement en eaux profondes.

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