The goals of the collaborative research and development project CLEAN are to research opportunities for the mobilization of natural gas volumes that are not conventionally extractable and to increase knowledge about the geological storage of CO2 in nearly exhausted natural gas fields.
CO2-SO2-NOx-Stimulated Rock Alteration
- Geological field model and integrated reservoir and caprock characterization
- Petrophysical laboratory investigations
- Downhole monitoring
Investigation on the Nature of Gas Hydrate Occurences - Structure, Composition and Physical Properties
The project "INGO" is a collaboration between the Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum (GFZ), the GeoZentrum Göttingen (GZG) of the University of Göttingen, and the Freie Universität Berlin (FUB) within the framework of the German BMBF/DFG funding program "GEOTECHNOLOGIEN - Methan im Geo/Biosystem".
Thermal Structure, Heat Flow, and Radiogenic Heat Production in the Northeast German Basin
The investigation of heat flow is one of the prerequisites for modeling the thermal structure of sedimentary basins and contributes to the determination of their geodynamic state and the composition and structure of their basement.
The Thermo-Hydraulic Conditions in the Area of the "Gulf of Corinth Deep Geodynamic Laboratory": Interpretation from Well-Logging and Modeling
The project contributes to the goals of the EU Corinth Rift Laboratory Program , which focuses on the investigation of fault mechanics and its relation to fluid flow and earthquake activity along the seismically active Aigion fault zone. The project aims at investigating, at local and regional scale, the thermal and hydraulic situation in the vicinity of the AIG 10 ICDP borehole.
Mallik 2002: Spatial and Temporal Variation of Temperature During a Gas Hydrate Production Test
The size and distribution of natural methane hydrate occurrences and the release of gaseous methane through the dissociation of methane hydrate are predominantly controlled by the subsurface pressure and temperature conditions. Because of the related change in enthalpy, both the formation and dissociation of gas hydrate in nature are inevitably coupled to the transport of heat within the surrounding formation.
Gas hydrates are a crystalline form of water containing voids or cavities that can trap guest molecules (e.g. methane, carbon dioxide, hydrogen sulphide). One cubic meter of gas hydrate can trap as much as 164 cubic meters of gas under normal pressure and temperature. Natural gas hydrates occur widely in marine sediments of the continental slope and rise or in sediments of the permafrost areas in the arctic regions. Estimates of the total hydrate volume vary widely but even relatively conservative estimates give values that exceed twice the estimates of carbon from known fossil fuel sources.
The project is motivated by the abundance of petrological and geophysical observations in the Central Andes indicating an elevated fluid content in the crust. The presence of fluids and melts in forearc and Western cordillera is probably controlled by the dehydration of subducting oceanic crust and hydrated mantle rocks. Dehydration processes have also been suggested to cause intermediate-depth earthquakes in the subduction zone.