The company

GFZ is the German national research centre for Geosciences, hosting 1100+ staff and is active in all fields of Earth science including geodesy, geology, geophysics, mineralogy, and geochemistry in a multidisciplinary scientific and technical environment. GFZ was founded in 1992 as the national research institution for geosciences in Germany and is ab initio member of the Helmholtz Association of National Research Centres. GFZ leads or participated in multiple (>15) projects dealing with geothermal energy.


Role in the Project

The contribution of GFZ in MEET will be made in laboratory investigation of fracture healing and fracture permeability evolution associated with enhanced stimulation of geothermal reservoirs. Conducting the experiments requires specialized laboratory facilities that are hosted at the institute.
GFZ will support petrophysical investigation of rocks and fluids.

Erik Rybacki is senior research scientist at GFZ Potsdam, section 4.2 ‘Geomechanics and Scientific Drilling’ since 1996. He holds a diploma in Geophysics and achieved his PhD at the University of Bochum, Germany. His scientific interest focuses on rock physics, in particular experimental rheology and fracture mechanics. Current research topics involve high-temperature rheology of crustal rocks and iron oxides, the initiation and evolution of ductile shear zones, the interplay between stress and reaction kinetics, the mechanical behavior of gas and oil shales in unconventional reservoirs, the mechanical characterization of clay rocks for potential nuclear waste disposal sites, and fluid-rock interaction processes and fracture healing in geothermal deposits. Erik Rybacki is responsible for the high-temperature deformation laboratories, the facilities for pore and fracture space characterization, and optical microscopy.

Harald Milsch (born 1968) studied Physical Engineering at the Technical University Berlin and Physics at the University of Göttingen. During and after his Diploma in Physics (1994) he spent two years at the Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE-CNRS) in Grenoble, France. He continued with a doctoral thesis at the GFZ German Research Centre for Geosciences and received his PhD (2000) in Geology from the University of Potsdam. In 2002, after having worked as a research scientist at the German Federal Institute for Materials Research and Testing, he was granted a research fellowship from the German Science Foundation (DFG) to perform three years of postdoctoral research at the Lamont-Doherty Earth Observatory of Columbia University in New York, USA. Since 2005 and to this date he has been working as a senior research scientist at the GFZ in Potsdam. His research is focused on experimental rock physics and thermophysics of fluids as well as fluid-rock interactions in the context of geothermal technology development.