“…Comprehensive information about subsurface natural fractured reservoir characteristics is especially important for prospection and subsurface utilization, for instance for geothermal energy engineering (e.g., Wenke et al, 2010;Grant, 2013;Faulds and Hinz, 2015;Lepillier et al, 2019), because fractures can act as channels for fluid flow enhancing hydraulic permeability if the fractures are open and conductive for fluids Bucher, 2014 andBakulin et al, 2000;Shapiro and Kaselow, 2005) or need to be considered in stimulation concepts. The degree and direction of natural fracturing is related with an anisotropy signature of the rock matrix.…”