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In the context of "Sachplan Geologische Tiefenlager" ("Sectoral Plan Deep Geological Repositories") Nagra investigated three siting regions in northern Switzerland. As part of the investigations, Nagra carried out three 3D seismic surveys between 2015 and 2017. The aim of this project was to provide a near-term primal interpretation for exploration purposes, providing the foundation for further special interpretation, such as tectonics and sedimentology.
Based on the prior carried out QLP, the interpretation was conducted by using the software Petrel. Initially, the seismic marker horizons were mapped manually, which primariliy included the interpretation of bigger faults. In the last step, the grid was finalized by using automatic search algorithms.
In the course of 3D seismic data depth-processing, an interpretation of selected reflectors was conducted, which was performed resulting in a consistent inline- and crossline grid - followed by gridding the interpretation results and inversion into an interpretation. Thus, a depth value was received for every CDP in the seismic.
In the course of the EU project Ri(ver)-Charge the impact of surface discharges from the western Styrian - Slovenian surrounding mountains on the groundwater and surface water quality. Overall, the project include reflexion seismic investigations as well as revision of seismic surveys.
In 2021, Geo5 conducted an interpretation of sub-buttom profiles in Hundsheim as well as in Rottau on behalf of the Christian Doppler Laboratory for sediment research and management.
In order to ensure continual and sustainable drinking water supply in Burkina Faso, the sedimentary basin in the west of Burkina Faso should be investigated using reflexion seismic. Overall, three seismic profiles, exhibiting a length of 140 km each, are planned to be acquired at the southern edge of the Taoudeni basin.
As a basis for the environmental impact assessment of the expansion area for sand and gravel extraction, refraction seismic and geoelectrical investigations under assignment of the company Rohrdorfer Sand und Kies Gmbh were conducted. The objective of this geophysical inquiry was to provide an areal image of the primary aquiclude in order to visualize the gravel thickness.
For the purpose of exploration of the superimposition thickness for Kanzelsteibruch Dennig in Gratkorn in the enlargement area geoelectric surveys were conducted. The aim of this project on the one hand was to provide an estimation of the overburden thickness above the limestone by applying the so called Wenner setup - on the other hand the depth as well as the relief of the laterally extended karst tube. In order to increase the quality of information, the Dipole-Dipole setup was applied additionally.
In October 2017 in the Wöllingbach basin, two seismic profiles were acquired, in order to discover the extension of the magnesite as well as to conduct an in-situ development of the methodical application of shear waves as innovative exploration methods. In the subsequent project, the profiles were seismically processed and geologically interpreted.
Overall, the project was divided into three phases: the first step included classical evaluation of the seismic p-waves in order to visualize the structural underground by using conventional processing steps. For a detailed visualization, the shear waves were assessed in the next step by applying innovative experimental processing. In the last phase both wave profiles were geologically interpreted.
In the course of the research project GeoTief, geological and geophysical investigations in the Vienna basin were conducted for the coordinating company Wien Energie together with the project partners Geologische Bundesanstalt, Geo5, Heinemann Oil (HOL), Montanuniversity Leoben, OMV, RAG, University of Salzburg, University of Vienna and Zentralanstalt für Meteorologie und Geodynamik (ZAMG).
The feasibility study about the application of deep geothermal energy in the greater area of Graz comprised the compilation and analysis of current available data the hydrothermal application of the deep underground in the south and south-east of Graz.
The purpose of reprocessing and reinterpretation of three seismic profiles (2 profiles from RAG and 1 profile from Land Steiermark) was the geothermal resource exploration in the area north and northwest of Altenmarkt/Fürstenfeld. Substantially, the geological fault system of the carbonate basements in the vicinity of the area including the existing wells was mapped and visualized.
In the course of the exploratory study RiSeiTex the basic applicability of GLCM (Gray Level Co-Occurrence Matrix) based on text attributes for the identification of fracture network was successfully tested. The first project phase included the adaption of the available workflow for facies area specification in order to enable the specification of fractures in geothermal reservoirs.
Two questions were investigated: The examination of the general applicability of anisotropy GLCM attributes for fracture direction and striking identification, whereas the results of the calculation of 13 spatial directions were compared to deduce strike and dip of a fracture. The second question addresses the resolution of the fracture direction.
Optimized planning of the geothermal area of interest is a necessity in order to ensure an economical production as well as utilization of heat and electricity from geothermal reservoirs. By using conventional interpretation of seismic attributes, the specification of the fracture network is only limited.
KrisT serves as determination tool for such networks by utilization of direction-dependent seismic testattributes based on the Gray Level Co-Occurrence Matrix (GLCM). In the course of the research project the possible spatial direction was enhanced to 109 and 193, while the seismic attributes were used in a cascading way and the algorithm was optimized in order to reduce the calculation time. The base for resolution improvement was conduced by the exploratory study RiSeiTex.
To clarify the geological model representation of the northwest basin edge of the Lavanttaler basin an overview profile was acquired. By conducting the measurements, die thickness of the sedimentary layers, thus the location bedrock, could be determined on one hand, on the other hand the internal sedimentation concerning possible aquifer was characterized and discussed.