Fluid-rock interactions in a geothermal Rotliegend/Permo-Carboniferous reservoir (North German Basin)

摘要

Comprehensive data on the chemical composition of reservoir rocks and geothermal brines from the geothermal well doublet Gro beta Schonebeck (North German Basin) drilled into a Rotliegend sedimentary and Permo-Carboniferous volcanic rock reservoir were sampled over the past years. They were characterized with respect to their major and minor elemental composition including various isotope ratios. The study considered the impact of drilling and reservoir operations on fluid composition and aimed at determining fluid-rock interactions to gain information on fluid origin and hydraulic pathways.