TY - GEN
T1 - Influence of overburden pressure and stress on reservoir temperature and productivity, North Alpine Foreland Basin, Germany
AU - Drews, M.
AU - Shatyrbayeva, I.
AU - Duschl, F.
N1 - Publisher Copyright:
© PPP 2020. All rights reserved.
PY - 2020
Y1 - 2020
N2 - The North Alpine Foreland Basin in SE Germany is currently exploited for deep geothermal (low enthalpy, hydrothermal) energy. Fractured and karstified carbonates of the Mesozoic basement form the main reservoir for ongoing deep geothermal exploration and production in the German part of the basin and, from north to south, are found in depths between 0-5000 m below ground level in the basin. Exploration success in the basin is high (80%), but the actual exploration activity is very much based on a step-out strategy. True wild cat exploration projects have a much higher failure rate and areas with suspected lower geothermal gradients are completely avoided, even though there is significant heat and energy demand and respective infrastructure in these areas. Nevertheless, the causes of insufficient productivity or lower temperatures are largely unknown since most investigations are restricted to single deep geothermal projects and the reservoir section. In this study we investigate variations of temperature and productivity associated to deep geothermal projects considering the regional pore pressure and stress distributions. The results indicate that the distribution of reservoir productivity, reservoir temperature and stress could be closely linked to the distribution of overpressure in the overburden section of the deep geothermal reservoir.
AB - The North Alpine Foreland Basin in SE Germany is currently exploited for deep geothermal (low enthalpy, hydrothermal) energy. Fractured and karstified carbonates of the Mesozoic basement form the main reservoir for ongoing deep geothermal exploration and production in the German part of the basin and, from north to south, are found in depths between 0-5000 m below ground level in the basin. Exploration success in the basin is high (80%), but the actual exploration activity is very much based on a step-out strategy. True wild cat exploration projects have a much higher failure rate and areas with suspected lower geothermal gradients are completely avoided, even though there is significant heat and energy demand and respective infrastructure in these areas. Nevertheless, the causes of insufficient productivity or lower temperatures are largely unknown since most investigations are restricted to single deep geothermal projects and the reservoir section. In this study we investigate variations of temperature and productivity associated to deep geothermal projects considering the regional pore pressure and stress distributions. The results indicate that the distribution of reservoir productivity, reservoir temperature and stress could be closely linked to the distribution of overpressure in the overburden section of the deep geothermal reservoir.
UR - http://www.scopus.com/inward/record.url?scp=85108506939&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85108506939
T3 - 3rd EAGE Workshop on Pore Pressure Prediction, PPP 2020
BT - 3rd EAGE Workshop on Pore Pressure Prediction, PPP 2020
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 3rd EAGE Workshop on Pore Pressure Prediction, PPP 2020
Y2 - 14 December 2020 through 16 December 2020
ER -