Выпуск: 3 , Том: 35 , Год издания: 2017

We present in this paper a seismic-stratigraphical framework for pressure prediction for oil and gas exploration in sedimentary basins, that is based on seismic information, with application to a marine part of the Jequitinhonha basin (east of the State of Bahia, Brazil). For this purpose it is necessary the knowledge of velocity distributions (compressional νP and shear νS), that can be obtained fromseismic sections, petrophysical information and empiricalmodels, and the distribution of density (ρ). We show some details of the theoretical modeling method, with an example that shows how pressure varies in the subsurface. We highlight that pressure that does not necessarily increase linearly with depth, but in a complex way that requires specific numerical calculations to be able to see important details related to a reservoir and surroundings. The model considers the vertical gravity load as the source of pressure in the geological formations, and in the present case we do not take into account the effects of formation curvatures, faulting, diagenesis and lateral tectonic events.