Aumentando o limite de visibilidade de dados sísmicos 3D em reservatórios de águas profundas com detalhes estruturais e estratigráficos

Abstract

This work attempts to show some aspects of 3D-seismic reservoir characterization using seismic attributes in a presence of channel-lobes turbidite play located in Brazilian passive Margin. Some attributes were selected and combined to extract qualitative information on subtle faults and its relationship with stratigraphic and depositional systems. Some latest industrial algorithms for attribute calculation, 3D image processing and detection of subtle structural features were applied. Recommendations on workflows and selection of 3Dseismic attributes during a seismic reservoir characterization study were suggested, which the choice of the kind of seismic attribute to be used will intrinsically depend on the quality of the data, initial seismic processing to recover the signal quality , the geological knowledge of the particular area, the kind of geological features and associated geometry as well as the knowledge of the attribute itself to be used for enhancement and detection. All these aspects have impact on the economic uncertainty for field development because it can produce deviation on the predicted production curves and NPV of some deep water exploitation projects.