Method for quantification and mitigation for dip-induced...

Details Method for quantification and mitigation for dip-induced... Method for quantification and mitigation for dip-induced...

G - Physics

01

V

G01V 1/00 (2006.01)

Patent

CA 2586603

This patent delineates methods for quantifying and mitigating dip-induced azimuthal AVO effects in seismic fracture detection using Azimuthal AVO analysis by accurately accounting for the divergence correction and azimuthal dependence of the reflection angle. Solutions are provided for three cases: (1) dipping isotropic reservoirs; (2) anisotropic reservoirs with fractures aligned in arbitrary direction; and (3) anisotropic reservoirs where vertical fractures are aligned perpendicular to the dip direction.

Cette invention concerne des procédés destinés à quantifier et à atténuer les effets AVO azimut induits par inclinaison dans une détection de fissure sismique par analyse AVO azimut prenant précisément en compte la correction de divergences et la dépendance azimut de l'angle de réflexion. Des solutions sont fournies dans trois cas: (1) l'inclinaison des réservoirs isotropes; (2) des réservoirs anisotropes à fracture alignées dans des directions arbitraires; et (3) des réservoirs anisotropes dans lesquels des fractures verticales sont alignées perpendiculaires au sens d'inclinaison.

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