In situ Geothermal Lab Groß Schönebeck
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1 In situ Geothermal Lab Groß Schönebeck
2 As a member of the Helmholtz Association, the GeoForschungsZentrum (GFZ) is the National Research Centre for Geosciences in Germany Foundation under public law Founded in 1992 About 1090 employees Annual Budget (2011): 48 million from programme funding 39 million from third-party funding 2
3 Helmholtz-Association 18 research centres with ~ 300 institutes staff senior-scientists and engineers 5500 doctoral students Budget: 3.4 billion Euros 3
4 Research Profile of GFZ Earth System Analysis Geodesy & remote Sensing Physics of the Earth Geodynamics and Geomaterials Chemistry and Material Cycles Earth Surface Processes Earth System Management Geoengineering Centres Centre for CO 2 Storage International Centre for Geothermal Research ICGR Centre for Early Warning (Tsunami Early Warning System) Centre for Geoinformation Technology Earth System Monitoring MESI (Modular Earth Science Infrastructure) Plate Boundary Observatories (Chile, Turkey) Global Change Observatories (Southern Africa, Central Asia) TERENO (Terrestrial Environmental Observatoria; Germany) 4
5 International Centre for Geothermal Research (ICGR) Research on reliable, efficient geothermal technologies Good practice guides Dissemination: technology- and know-how-transfer Site-independent concepts for an environmentally friendly and sustainable use of geothermal energy
6 Geothermal Resources in Germany Rostock Hamburg Neustadt Glewe N o r d de u t s c h e s B e c k e n Groß Schönebeck Hannover Berlin Köln Thüringisches Becken Leipzig Dresden Soultz Basel Frankfurt Ober Rheingraben Landau Stuttgart München Bayrisches Unterhaching Molassebecken Altheim Hydrogeothermal resources Potential hydrothermal resources No known hydrothermal resources Basement and/or thin sedimentary cover
7 Geothermal Resources in Germany
8 Geothermal technologies Conditions Limited temperatures (100 C 200 C) Geothermal fluid flow rate m³/h (~ kg/s) Thermal capacity per production well ~ 5 to 50 MW th Site specific geothermal fluid composition Challenges Find the reservoir Explore & stimulate the reservoir Efficient energy supply Focus Technologies for a sustainable heat and/or power supply..also from reservoirs with low natural permeability
9 In situ Geothermal Lab Groß Schönebeck
10 In situ Geothermal Lab Groß Schönebeck Exploration Access Engineering Energy supply Geology Geophysics Drilling & Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
11 History (1) E GrSk 3/90 Gas exploration well m, 150 C (2) Gt GrSk 4/05 Geothermal well 4.400,44 m, 150 C stimulation sandstone productivity improved deepened to m, massive hydraulic stimulation production test productivity improved distributed temperature measurements, long term injection tests massive stimulation (volcanic rocks), gel-proppant-frac (sandstone) productivity improved well cleaning, completion installation downhole pump communication experiment
12 In situ Geothermal Lab Groß Schönebeck Exploration Access Engineering Energy provision Geology Geophysics Drilling Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
13 Exploration Geology & Geophysics (from Moeck et al. 2009) (from Bauer et al. 2010)
14 In situ Geothermal Lab Groß Schönebeck Exploration Access Engineering Energy provision Geology Geophysics Drilling Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
15 Access Drilling & Logging
16 In situ Geothermal Lab Groß Schönebeck Exploration Access Stimulation Energy provision Geology Geophysics Drilling Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
17 Reservoir Engineering Modelling Stimulation
18 Communication Experiment Operational characteristics of the doublet Reservoir behaviour dynamic behaviour of pressures and temperatures reservoir-volume involved in geothermal fluid circulation hydraulic limits of the reservoir (no flow boundaries) Electrical submersible pump (ESP) in ~1200 m
19 Communication Experiment Operational characteristics of the doublet Reservoir behaviour dynamic behaviour of pressures and temperatures reservoir-volume involved in geothermal fluid circulation hydraulic limits of the reservoir (no flow boundaries) Geothermal fluid composition Geochemical and process engineering aspects scaling and corrosion material resistance Corrosion test cell
20 Geothermal fluid loop
21 In situ Geothermal Lab Groß Schönebeck Exploration Access Stimulation Energy provision Geology Geophysics Drilling Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
22 Geochemical Investigations classification of fluids regarding geological aspects chemical composition of the geothermal fluid during operation and throughout the fluid loop accompanying gas analyses under in situ conditions comparison of different corrosionmonitoring systems identification of corrosion relevant parameter catalogue for fluid-specific material use corrosion test rack mobile fluid monitoring (FluMo) on-site laboratory
23 In situ Geothermal Lab Groß Schönebeck Exploration Access Stimulation Energy provision Geology Geophysics Drilling Logging Reservoir Engineering Process & Energy Engineering Reservoir Feasibility Utilization concept System Performance
24 Systematic investigations: plant- and process behaviour component behaviour (efficiency, reliability, part load) long term behaviour of plant set-up coupled investigation of subsurface and surface processes optimisation potential (design and operation) influence of the cold end Research power plant comprehensive monitoring holistic approach for improved geothermal low-temperature power plants
25 Research power plant
26 Research power plant Heat input Gross power Net power
27 pirmary heat exchanger Evaporator module 1 Heat exchangers Module 3 Turbogenerator Module 1, 2 & 3 Evap. & preheater Module 2 Preherater module 1 Recuperator-condenser module 1 & 2
28 Geothermal research platform
29 International cooperations and initiatives European Union: GEISER Geothermal Engineering Integrating Mitigation of Induced Seismicity in Reservoirs (development of strategies to mitigate induced seismicity) Indonesia: Sustainability concepts for exploitation of geothermal reservoirs in Indonesia (exploration/reservoir engineering/geothermal plant technology/capacity building) USA Cooperation University of Reno: Evaluation of the geothermal resource potential of Nevada/Canada Helmholtz-Alberta Initiative HAI: Cooperation Helmholtz Association University of Alberta (Geothermal assessment for the Alberta Basin) European Energy Research Alliance (EERA): ICGR Coordinator of the Joint Programme on Geothermal IPCC (Intergovernmental Panel on Climate Change) contribution to the Renewable Energy Report
30 Geothermal Power Generation in Remote Areas Small scale power plant modules: - use of low- to mediumgeothermal resources from shallow (hydrothermal) reservoirs - applicable at different geothermal sites - realisation of different plant sizes with modular set-up - Reliable operation - Low maintenance effort Test of a 60 kwel ORC module at the in situ lab
31 Thank you for your attention.
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