Advances in European Geothermal Research : Proceedings of the Second International Seminar on the Results of EC Geothermal Energy Research, Held in Strasbourg, 4–6 March 1980

The first crisis in energy prices was undoubtedly a strong stimulus for the involvement of the Commission of the European Communities in research and development on alternative energy sources. Indeed, the need to overcome difficulties faced by the Community as a whole, particularly those resulting from its severely unbalanced energy supply, made a common Community approach seem especially apt. This reasoning also applies to energy R & D, bearing in mind that responses to the crisis should be not only political or economic, but also scientific. Four years have passed since the decision of the Council of Ministers to launch the first Community Energy Research and Development Programme, dealing with geothermal energy, solar energy, hydrogen production and utiliƯ sation, energy conservation and energy systems analysis. A seminar on geoƯ thermal energy was held two years ago to report on work in progress at the half-way stage of the four-year programme. The second international seminar, reported in this volume, was arrangƯ ed so as to provide an opportunity to examine the final outcome of this Community investment in research in geothermal energy. This proceedings volume therefore has two main aims: - to present an evaluation of the results of the Community geothermal programme, by means of 83 formal reports describing the individual research programmes; - to show how the Community research programme fits into the overall context of national and international research on geothermal energy, by including the presentations of six guest speakers who introduced the sessions and gave keynote addresses Front Matter....Pages i-xvi Front Matter....Pages 1-1 Opening Address....Pages 3-5 Opening Address....Pages 7-8 Geothermal Research in the European Community Objectives and Reality....Pages 9-36 Keynote Speech....Pages 37-42 Front Matter....Pages 43-43 Geothermal Synthesis of the Upper Rhine-Graben....Pages 45-49 Neotectonics and the Geothermal Anomalies in the Rhinegraben....Pages 50-61 Determination of Thermal Conductivity and Diffusivity of Rhinegraben-Sediments with a New Ring Source Device....Pages 62-69 Numerical Calculations of Strong Temperature Gradients at Interfaces of Horizontally Stratified Sediments....Pages 70-76 Geothermal Anomalies in the Rhinegraben Sediments and Their Explanation by Uprising Deep Groundwater from the Crystalline Basement....Pages 77-88 Contribution of Magnetism and Gravimetry to the Knowledge of the Antepermian Basement in the Rhinegraben. Applications to Geothermy.....Pages 89-98 Preliminary Assessment of the Geothermal Potential of the United Kingdom....Pages 99-108 Geothermal Potential of Late Quaternary East Eifel Volcanic Field....Pages 109-112 Geothermics in Hainaut (Belgium)....Pages 113-115 Geothermal Evaluation of the Triassic Reservoirs of the Paris Basin....Pages 116-120 The Evaluation of a Preliminary Geothermal Model for the Phlegraean Fields Volcanic Area (Italy)....Pages 121-140 Integrated Geothermal Reconnaissance of the Somma-Vesuvius System....Pages 141-153 Prospection Geothermique Integree Dans Le Massif Du Mont Dore....Pages 154-201 Geothermal Survey of the South-East Margin of the French Massif-Central....Pages 202-212 Geothermal Exploitation in Greece....Pages 213-237 A Geological and Geothermal Approach of the Pavin Area, Southern Chaine Des Puys (France)....Pages 238-249 Front Matter....Pages 251-251 Deep Investigation of the Geothermal Anomaly of Urach....Pages 253-266 Latera Exploratory Well (Northern Latium) Italy....Pages 267-276 Operation Geothermie a Strasbourg-Cronenbourg....Pages 277-283 Demonstration Project Couple of Wells for Geothermal Space Heating in Metanopoli, Milano....Pages 284-290 Demonstration Project: Evaluation of The Mofete High Enthalpy Reservoir (Phlegrean Fields)....Pages 291-302 Deep Exploration in Larderello Field: Sasso 22 Drilling Venture....Pages 303-311 Front Matter....Pages 313-313 Hydrogeology and Geochemistry of the Thermal Springs of South-West Tuscany....Pages 315-329 Origin and Circulation of Thermal Waters in the Upper Rhine Graben: A Chemical and Stable Isotope Study....Pages 330-339 Refinements in the use of Chemical Geothermometers Application to the Plombieres System (France)....Pages 340-348 Geochemical Survey of Shallow Ground Water Wells in Denmark....Pages 349-359 Geochemistry of Thermal Water in the Mont-Dore Area....Pages 360-368 Evaluation of Reservoir Temperatures in Tuscany by Application of a Gas- Geothermometer....Pages 369-377 Fluid-Rock Interaction in Geothermal Energy Recovery....Pages 378-386 Geothermal Applications of the Geochemical Study of Hot Springs in Eastern Pyrenees....Pages 387-395 Trace Element Geochemistry in Thermal Waters from Plombieres and Bains (Vosges)....Pages 396-409 Geochemical Sampling and Analysis of Geothermal Fluids in Sedimentary Basins....Pages 410-421 Investigation of Thermal and Mineral Springs in the Eifel Mountains Regarding Geothermal Indications....Pages 422-427 Some Remarks on the Application of Geochemical Techniques in geothermal exploration....Pages 428-443 Front Matter....Pages 445-445 Heat Flow Pattern of the United Kingdom....Pages 447-455 Exploration and Interpretation of the SW England Geothermal Anomaly....Pages 456-465 Front Matter....Pages 445-445 Terrestrial Heat Flow in France....Pages 466-473 A Critical Study of Heat Flow Data in France....Pages 474-484 Geothermal Trends of Denmark....Pages 485-495 The Shallow Subsurface Temperature Field in the Netherlands....Pages 496-505 Temperature and Heat Flow Patterns of Italy....Pages 506-515 Harmonic Pick-Up: Preliminary Mathematical Model for Interpretation....Pages 516-520 The Perfecting of a Harmonic Pick-up for the Simultaneous Detection of the Thickness and Extent of a Fracture Crossed by a Boring....Pages 521-524 In Situ Determination of Thermal Conductivity in Cased Drill Holes....Pages 525-534 Design and Testing of Down Hole Probes for Operation in Deep and Hot Environments....Pages 535-544 Direct Heat Flow Measurement Probe Project....Pages 545-555 An In-Situ Thermal Conductivity Probe....Pages 556-564 Front Matter....Pages 565-565 Seismological Investigations in Urach....Pages 567-575 Structural Study of the Urach Area by Deep Refraction Seismics....Pages 576-586 Combined Reflection and Refraction Measurements for Investigating the Geothermal Anomaly of Urach....Pages 587-602 Seismic Studies for the Determination of the Crustal Structure in the Area of the Geothermal Anomaly in Tuscany....Pages 603-613 V P /V S Ratio and its Changes in the Travale Geothermal Field....Pages 614-621 Identification of 3 D Bodies by Moho Reflected Waves Application to the Mont Dore Area....Pages 622-631 Etudes Sismiques Sur La Caldera Du Mont Dore....Pages 632-647 Investigation of the Microseismic Noise of the Geothermal Anomaly at Torre Alfina (Italy).....Pages 648-653 How can Seismics, Especially Active, Assist in Geothermal Energy Utilization....Pages 654-670 Front Matter....Pages 671-671 Actual Situation and Future Program of Geothermal Developments in Mexico....Pages 673-679 Heat and Mass Transfer with Phase Conversion in Porous Media Application to Geothermal Reservoir Simulation....Pages 680-693 A Thermogravimetric Loop for Converting Low Enthalpy Geothermal Energy into Electricity....Pages 694-705 Lifetime Optimization of Low Enthalpy Geothermal Doublets....Pages 706-719 Influence of Stratified Heterogenities of Permeability on the Life Span of a Geothermal Doublet....Pages 720-734 Experimental Studies of Rock-Water Interactions Occuring During the Circulation of a Geothermal Doublet in a Carbonate Environment....Pages 735-746 In Situ Determination of the Hydrothermal Properties of a Deep Fractured Medium by a Single Well Technique....Pages 747-755 Well Testing of Low to Very Low Permeability Fractured Media — a Review....Pages 756-781 Results of the New Geothermal Domestic Heating System at Creil....Pages 782-792 Optimisation D’un Chauffage Geothermique En Fonction Des Diverses Conditions Climatiques.....Pages 793-802 Study and Optimization of a High Efficiency Convector Adapted for the use of Geothermal Low Temperature Water....Pages 803-809 Technical and Economic Feasibility of Low Enthalpy Geothermal Projects in The E.E.C.....Pages 810-819 Front Matter....Pages 821-821 Application of D.C. Dipolar Methods in the Upper Rhine Graben....Pages 823-832 Dipole-Dipole Study of the Travale Geothermal Field....Pages 833-842 Distribution of Electrical Conductivity in Crust and Upper Mantle in the Area of the Geothermal Anomaly of Tuscany/Italy....Pages 843-853 Three-Dimensional Resistivity Modelling by the Integral Equation Method....Pages 854-874 Magnetic Survey in the Travale Geothermal Field, Italy....Pages 875-883 Use of the Differential Magnetic Sounding for Studying the Geothermal Potential Resources of the Rhinegraben....Pages 884-892 Magnetovariational and Magnetotelluric Soundings in Rheingraben and Schwarzwald....Pages 893-903 Magnetotelluric Survey of the Lake Laach (Eifel) Volcanic Area....Pages 904-910 Front Matter....Pages 821-821 Magnetotelluric Measurements and Geomagnetic Depth Sounding in the Area of the Urach Geothermal Anomaly....Pages 911-920 Some Results of Very Low Frequency Magneto-Telluric Survey in the Mont Dore Area (Mt 5 Ex and Harmonic Solutions)....Pages 921-934 Magnetotelluric Prospection of the Mont Dore Area....Pages 935-943 Front Matter....Pages 945-945 Hydraulic Fracturing of Hot Dry Rocks. Tridimensional Studies of Cracks Propagation and Interaction by Photoelastic Methods....Pages 947-956 Scale Models Studies of Well Linking by Hydraulic Fracturing and Fatigue Microfracturing....Pages 957-966 Microsismic and Acoustic Activity Associated with Hydraulic Fracture Propagation....Pages 967-976 Permeability Stimulation of Crystalline Rocks by Chemical Leaching....Pages 977-988 Heat Fracturing Physical Model....Pages 989-993 Erfahrungen Mit Fracbehandlungen in Tiefen, Geringpermeablen Gaslagerstâtten....Pages 994-1008 The Enhancement of the Permeability of Granite by Explosive and Hydraulic Fracturing....Pages 1009-1031 Analysis of Hydraulic Fracture Propagation a Field Experimentation....Pages 1032-1043 Investigations on an Artificially Created Frac in a Shallow and Low Permeable Environment....Pages 1044-1053 Back Matter....Pages 1055-1086