INTEGRATED GEOTHERMAL MODELING ON DIFFERENT SCALES IN THE NORTHEAST GERMAN BASIN

Geothermal modeling is an important part of large-scale basin studies. Based on a new 3D structural model of the Northeast German basin, the present day regional geothermal field is modeled. Range and regional trend of the modeled temperature values are in agreement with the publ ished data. Due to the high spatial resolution, the calculated tempera ture distribution provides additional information with respect to area s where no measured data is available. The results are used as input a nd boundary parameters for small-scale models of geothermal energy pro duction. In general, in many regions not enough data is available to d efine all necessary physical or chemical parameters for modeling. In t his context, data obtained from the large-scale model help to constrai n unknown parameters. Subsequently, the small-scale model is used to s imulate various production schemes focusing on enhanced predictions wi th respect to the possible lifetime of such installations. The simulat ion results also show the need for elaborated models if reliable predi ctions of the temperature evolution are required.