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See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/255180147BEST PRACTICE HANDBOOK for thedevelopment of Unconventionnal GeothermalResources...Article · December 2008CITATIONS0READS4819 authors, including:Domenico MontanariItalian National Research Council89 PUBLICATIONS 405 CITATIONSSEE PROFILELaurent AndréFrench Geological Survey62 PUBLICATIONS 543 CITATIONSSEE PROFILEJiri MullerInstitute for Energy Technology49 PUBLICATIONS 721 CITATIONSSEE PROFILEBernard SanjuanFrench Geological Survey89 PUBLICATIONS 744 CITATIONSSEE PROFILEAvailable from: François-D VuatazRetrieved on: 24 November 2016ENGINE Coordination Action(ENhanced GeothermalInnovative Network for Europe)BEST PRACTICE HANDBOOKfor the development ofUnconventionnal Geothermal Resourceswith a focus onENHANCED GEOTHERMAL SYSTEMBest Practice HandbookENGINE Coordination Action (ENhanced Geothermal Innovative Network for Europe)SummaryExecutive summary .....................................................................................................................911131315191920212323262626262828292930323334343535363737383839Introduction ................................................................................................................................1. Site Investigation ..................................................................................................................1.1. GENERAL INTRODUCTION ..........................................................................................1.2. SITE SCREENING: DOWNSCALING WORKFLOW......................................................1.2.1. Continental scale approach ...............................................................................1.2.1.1. Definition of interesting regions............................................................1.2.1.2. Construction of European mechanical structure..................................1.2.1.3. Neotectonics (seismic history) .............................................................1.2.2. Regional scale (e.g. Rhine Graben, Pannonian basin)......................................1.2.2.1. Broad-scale Geophysical studies.........................................................1.2.2.2. Remote sensing ...................................................................................1.2.3. Local scale (e.g. typical 50 km x 50 km)............................................................1.2.3.1. Geochemistry.......................................................................................1.2.3.2. Intermediate-scale Geophysical studies ..............................................1.2.3.3. Resource potential ...............................................................................1.2.3.4. Cross-checking with other economic factors .......................................1.2.4. Reservoir scale (e.g. typical 2 km x 2 km).........................................................1.2.4.1. 3-D geology - field geology ..................................................................1.2.4.2. Well investigation and fine-scale geophysics ......................................1.2.4.3. Geochemistry and geothermometers ..................................................1.2.4.4. Local stresses and reservoir geomechanics........................................1.2.4.5. Conceptual model and reservoir modelling .........................................1.3. WORKFLOW EXAMPLES IN DIFFERENT GEO-ENVIRONMENTS.............................1.3.1. Volcanic environment.........................................................................................1.3.1.1. Iceland..................................................................................................1.3.1.2. Guadeloupe, France ............................................................................1.3.1.3. Kamchatka, Russia ..............................................................................1.3.1.4. Vesuvius, Italy......................................................................................1.3.2. Crystalline or Metamorphic environment ...........................................................1.3.2.1. Soultz-sous-Forêts, France..................................................................1.3.2.2. Larderello, Italy.....................................................................................3Best Practice HandbookENGINE Coordination Action (ENhanced Geothermal Innovative Network for Europe)1.3.3. Sedimentary environment.................................................................................. 404041424445454849505151515357585959602.2.1.2. Hydraulic stimulation - volcanics - Gross Schönebeck ........................62626263636565676869707071731.3.3.1. Groß Schönebeck, Germany................................................................1.3.3.2. Altheim, Austria ....................................................................................1.3.4. Critical overview of workflow processes............................................................1.4. FROM THE STATE OF THE ART TOWARD THE FUTURE.........................................1.4.1. Goals of exploration...........................................................................................1.4.1.1. Characterization of host rock conditions ..............................................1.4.1.2. Integrate data .......................................................................................1.4.1.3. Improve imaging between wells ...........................................................1.4.2. Concluding remarks...........................................................................................2. Drilling, reservoir assesment and Monitoring...................................................................2.1. DRILLING .......................................................................................................................2.1.1. Drilling sediments - Gross Schönebeck ............................................................2.1.2. Drilling volcanics - Iceland.................................................................................2.1.3. Drilling granites - Soultz.....................................................................................2.1.4. Drilling metamorphics - Larderello & Philippines...............................................2.2. STIMULATION................................................................................................................2.2.1. Hydraulic stimulation .........................................................................................2.2.1.1. Hydraulic stimulation - sediments - Gross Schönebeck.......................2.2.1.3. Hydraulic stimulation - Granites - Soultz ..............................................2.2.1.4. Hydraulic stimulation - Metamorphics - Larderello ...............................2.2.2. Thermal stimulation ...........................................................................................2.2.3. Chemical stimulation .........................................................................................2.3. TESTING ........................................................................................................................2.3.1. Hydraulic testing ................................................................................................2.3.2. Tracer testing.....................................................................................................2.4. RESERVOIR ASSESSMENT MANAGEMENT AND MONITORING.............................2.4.1. Reservoir assessment.......................................................................................2.4.2. Reservoir management .....................................................................................2.4.3. Corrosion and scaling........................................................................................2.4.4. Reservoir monitoring .........................................................................................3. Exploitation: Best Practices and innovation Needs .........................................................4Best Practice HandbookENGINE Coordination Action (ENhanced Geothermal Innovative Network for Europe)3.1. OVERVIEW.....................................................................................................................73747575757677777778808081838383838486889091933.2. EXPLOITATION CYCLE.................................................................................................3.2.1. Piping .................................................................................................................3.2.2. Production pumps ..............................................................................................3.2.3. Reinjection pumps..............................................................................................3.2.4. Heat exchangers................................................................................................3.2.5. Inhibitors injecting equipment ............................................................................3.3. POWER GENERATION..................................................................................................3.3.1. Condensing Plants.............................................................................................3.3.2. Binary Plants ......................................................................................................3.3.3. Heating applications...........................................................................................3.4. MONITORING AND FIELD MANAGEMENT ..................................................................3.5. RESEARCH AND DEVELOPMENT NEEDS..................................................................4. Environmental and socioeconomic impact........................................................................4.1. ENVIRONMENTAL CONCERNS....................................................................................4.1.1. Introduction ........................................................................................................4.1.2. Low Enthalpy Hydrothermal Fields ....................................................................4.1.3. High Enthalpy Hydrothermal Fields ...................................................................4.1.4. Enhanced Geothermal Systems ........................................................................4.2. SOCIAL ASPECTS .........................................................................................................4.3. INNOVATION NEEDS.....................................................................................................Authors........................................................................................................................................References..................................................................................................................................5Best Practice HandbookENGINE Coordination Action (ENhanced Geothermal Innovative Network for Europe)List of FiguresFigure 1 - Site selection benefits vary considerably (see criteria) from