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The Lower Saxony Basin (LSB) in northwest Germany is one of the oldest oil-producing basins in the world, where the first production well was drilled in 1864. It has been intensively investigated with respect to its hydrocarbon potential and can be regarded as a well-studied example of a sedimentary basin that experienced strong inversion and uplift. Oil and gas source rocks of economic importance include Upper Carboniferous coals as well as Jurassic (Toarcian Posidonia Shale) and Cretaceous (Berriasian/Wealden) shales. We have developed a fully integrated 3D high-resolution numerical petroleum systems model incorporating the LSB, and parts of the Pompeckj Block in the north as well as the M€ unsterland Basin in the south. Aside from temperature and maturity modeling calibrated by a large amount of vitrinite reflectance and downhole temperature data, we also investigated petroleum generation and accumulation with special emphasis on the shale gas potential of the Jurassic Posidonia Shale.

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