TY - JOUR
T1 - Multidisciplinary approach to assess geothermal potential, Tønder area, North German Basin
AU - Hjuler, Morten Leth
AU - Olivarius, Mette
AU - Boldreel, Lars Ole
AU - Kristensen, Lars
AU - Laier, Troels
AU - Mathiesen, Anders
AU - Nielsen, Carsten Møller
AU - Nielsen, Lars Henrik
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/3
Y1 - 2019/3
N2 - This study demonstrates how a multidisciplinary approach can optimize reservoir characterization and thereby reduce the risk of failure for a potential geothermal development. A geological model of three Lower Triassic low-enthalpy geothermal reservoirs is presented based on available existing data, where 2D and 3D seismic surveys and five deep wells provide data for structural, petrophysical, petrographical, provenance and pore water analysis. Reservoir properties and continuity are controlled by depositional environment and are further affected by the highly saline formation brine, nitrogen gas and cementation by carbonate, anhydrite and halite. The lower Bunter sandstone forms a continuous reservoir of excellent quality, the middle Bunter sandstone constitutes a potential upside reservoir and the upper Bunter sandstone displays variable reservoir properties due to spatial variations in reservoir continuity.
AB - This study demonstrates how a multidisciplinary approach can optimize reservoir characterization and thereby reduce the risk of failure for a potential geothermal development. A geological model of three Lower Triassic low-enthalpy geothermal reservoirs is presented based on available existing data, where 2D and 3D seismic surveys and five deep wells provide data for structural, petrophysical, petrographical, provenance and pore water analysis. Reservoir properties and continuity are controlled by depositional environment and are further affected by the highly saline formation brine, nitrogen gas and cementation by carbonate, anhydrite and halite. The lower Bunter sandstone forms a continuous reservoir of excellent quality, the middle Bunter sandstone constitutes a potential upside reservoir and the upper Bunter sandstone displays variable reservoir properties due to spatial variations in reservoir continuity.
KW - Bunter Sandstone Formation
KW - Facies-dependent reservoir quality
KW - Low-enthalpy geothermal energy
KW - Multidisciplinary reservoir characterization
KW - Reservoir continuity
KW - Reservoir properties
UR - http://www.scopus.com/inward/record.url?scp=85058944771&partnerID=8YFLogxK
U2 - 10.1016/j.geothermics.2018.12.001
DO - 10.1016/j.geothermics.2018.12.001
M3 - Article
SN - 0375-6505
VL - 78
SP - 211
EP - 223
JO - Geothermics
JF - Geothermics
ER -
