Electromagnetic methods for exploration and monitoring of enhanced geothermal systems – A virtual experiment

摘要: Abstract We present the concept of virtual electromagnetic experiments, which aims at setting up and optimizing monitoring design for a potential stimulated geothermal energy reservoir. The builds on existing 3D geologic models, are processed, meshed, assigned realistic electrical parameters used our finite element simulations unstructured tetrahedral grids. available simulation codes able to cope with high degree geometric complexity in close-to-reality scenarios. To demonstrate procedure capabilities method, we show model preparation results transient method context prospective enhanced deep site fault ‘Roter Kamm’ near Schneeberg Saxony/eastern Germany. changes measuring signal caused by fracture system more than 5000 m depth range resistivity contrasts, represent different porosity, pore connectivity or fluid variations. When borehole receiver is advantageously placed depth, percentage 25% can be expected. Our study demonstrates, that optimal positioning source crucial successful may only achieved advanced techniques.