Analysis of the Efficiency of Petroleum Systems in Fluvial Environments in the Rift Context of the South and North Atlantic: Brazil and Portugal

The present article exhibits the achieved results based on evaluation of two petroleum systems, which compares reservoirs fluvial environments sedimentary basins located in south and north Atlantic, Brazil (Recôncavo Basin) Portugal (Lusitanian Basin), respectively. main contribution this study is survey static (source, reservoir, sealing rocks, addition to traps) dynamic elements (tectonic, migration, thermal, diagenetic processes) studied seeking understand reasons for success failure analyzed relation accumulation hydrocarbons. following materials were used study: lithostratigraphic charts, event charts interpreted 2D seismic reflection lines, lithological profiles, outcrop data, geochemical analysis source petrographic analysis, description processes, acts reservoir rocks. methodology presents phases: first with a multiscale characterization systems economic aspects, another an integrated potentials, efficiency table system interpretative diagrams elements. occurrences hydrocarbon accumulations indicate that structuring Recôncavo Basin horsts grabens provides formation efficient migration routes, combined excellent rock, good permo-porous characteristics, effective seal On other hand, Lusitanian Basin, Paleozoic rocks occur mini-basins, little lateral continuity, negatively affects generation Besides fact, saliferous tectonics cause along faults or their walls towards upper strata surface. rock shows strong action its petrophysical properties. implication work analogous reservoirs, detailed investigation systems.