Abstract
Our study here deals with the seismic characterization of the stratigraphy of a lacustrine section from the Lagoa Feia Group in the Campos Basin, which extends over an area of 100,000 km2 and in this domain are complex,and heterogeneous which makes accurate reservoir characterization very challenging. . By using an extensive 2D seismic dataset and two deep well logs and core informations, we propose a seismic facies analysis and structural characterization of the Lagoa Feia group in the inner proximal domain of the Campos basin. Inferences from well core and seismic stratigraphy clearly suggest that the all Lagoa Feia group has a syn-rift depositional character. Based on their seismic character, four seismic facies representing the main lithological package in the rift section are recognized: border fault deposits; fine grain-dominated re-sedimented deposits; coarse grain-dominated carbonate rich re-sedimented deposits. Using some simplified kinematic and seismic stratigraphy analysis we show normal faults affecting the lower units of the Lagoa Feia had a long lived intermittent activity during the main passive margin rift history. This work represents an introductory step to a facies classification and structural interpretation applicable in the internal SE Brazil offshore area.
Published Version
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