Extraction of depositional systems

G - Physics – 01 – V

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G01V 1/28 (2006.01) G01V 1/32 (2006.01)

Patent

CA 2659020

A process that assists with the identification of potential hydrocarbon deposits that includes performing a structural interpretation of a three-dimensional seismic volume, transforming the three-dimensional seismic volume into a stratal-slice volume, performing a stratigraphic interpretation of the stratal-slice volume which includes the extracting of bounding surfaces and faults and transforming the stratal-slice volume into the spatial domain. As illustrated in Figs. 24a, b and c, an exemplary seismic volume before Domain Transformation is presented in Fig. 24a, interpreted horizons and faults used in the transformation are presented in Fig. 24b, and the Domain Transformed stratal-slice volume is presented in Fig. 24c. The input seismic volume in Fig. 24a has deformations associated with syn- and post-depositional faulting. The output Domain Transformed volume (Fig. 24c) is substantially free of deformations.

L'invention concerne un procédé qui aide à identifier des dépôts d'hydrocarbures potentiels qui inclut la réalisation d'une interprétation structurelle d'un volume sismique tridimensionnel, la transformation d'un volume sismique tridimensionnel en volume à tranches de strates, la réalisation d'une interprétation stratigraphique du volume à tranches de strates qui inclut l'extraction des surfaces limites et des failles et la transformation du volume à tranches de strates en domaine spatial. Comme indiqué sur les figures 24a, b et c; un volume sismique exemplaire est présenté avant transformation en domaine sur la figure 24a, les horizons et les failles utilisés pour la transformation sont présentés sur la figure 24b, et le volume à tranches de strates transformé en domaine est présenté sur la figure 24c. Le volume sismique entré sur la figure 24a comprend des déformations associées à des failles syn- et post-sédimentation. Le volume transformé en domaine résultant (figure 24c) est sensiblement dépourvu de déformations.

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