Fig. 1

Tectonic map and study area. a Location of the study area in Germany and geothermal gradient of the Molasse Basin (drawn after Agemar et al. (2012)). b Sketch of the German Molasse Basin, showing the main tectonostratigraphic units and major fault lineaments. The location of the studied reservoir is marked by a black dot (drawn after Freudenberger and Schwerd 1996a; 1996b). c Map view of the trajectories of the deviated wells. Dashed red lines are traces of the Munich fault (ticks on downthrown side), which divides the reservoir into the northern footwall, the intermediate block, and the southern hanging-wall. d Three-dimensional view of the well paths (colours as in c). The depth at which the deviated wells enter the analysed reservoir section is marked in c and d by coloured dots. The black dots mark the drill site