Oil accumulations in the deepwater Campos Basin offshore Brazil are found in Oligocene/Miocene sand-rich turbidites of contrasting architectural types. Reservoirs are sand lobes with thickness of 50 m, width of 1–5 km wide, and length of 2–10 km that display compensation stacking patterns. The reservoirs show bright reflections in a single amplitude trough corresponding to a relative decrease in impedance. In the study area, turbidite successions have high structural dips and complex spatial distribution. Their individual geometries are very difficult to map using conventional 3-D data.

Detailed mapping of the geometry of Campos Basin turbidite reservoirs is required to guide...

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