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COTHERM2 - COmbined hydrological, geochemical and geophysical modelling of geotTHERMal systems II.

English title COTHERM2 - COmbined hydrological, geochemical and geophysical modelling of geotTHERMal systems II.
Applicant Driesner Thomas
Number 160757
Funding scheme Sinergia
Research institution Institut für Geochemie und Petrologie ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geophysics
Start/End 01.09.2015 - 31.10.2017
Approved amount 300'943.00
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All Disciplines (4)

Discipline
Geophysics
Geology
Other disciplines of Earth Sciences
Geochemistry

Keywords (7)

geochemistry; geothermal; numerical simulation; reactive transport modeling; fluid-rock interaction; geophysics; supercritical

Lay Summary (German)

Lead
COTHERM2 erforscht einen spektakulären neuen Typus von Geothermalsystemen, der 2009 am Krafla Vulkan in Island erbohrt wurde und extrem heisses Wasser (über 450 Grad) enthält.
Lay summary

COTHERM2 bringt vier Forschungsgruppen aus den Bereichen Hydrologie, Geologie, Geochemie und Geophysik von der ETH Zürich, dem Paul Scherrer Institut und der Universität von Island zusammen, um die Struktur, Dynamik und Funktionsweise von natürlichen Geothermalsystemen in vulkanischen Gebieten wie Island besser zu verstehen. COTHERM2 setzt den Schwerpunkt auf einen spektakulären neuen Typus von Geothermalsystemen, der 2009 am Krafla Vulkan in Island erbohrt wurde und extrem heisses Wasser (über 450 Grad, normale Geothermalsysteme werden selten heisser als 300 Grad) in 2 km Tiefe über einem Magmakörper enthält. Isländische Forscher fanden heraus, dass die Nutzung solcher Systeme bis zu 10 mal mehr Elektrizität pro Bohrloch erbringen könnte. COTHERM2 wird Methoden entwickeln, wie man solch wirtschaftlich attraktiven und wissenschaftlich hochinteressanten Systeme auch in anderen Gegenden lokalisieren kann. Zudem werden wir die hydrologischen und geochemischen Prozesse, die in diesen Systemen ablaufen, mit einem multi-disziplinären Ansatz untersuchen, um durch ein besseres Verständnis eine mögliche nachhaltige Nutzung zu erlauben.  

Direct link to Lay Summary Last update: 22.07.2015

Responsible applicant and co-applicants

Employees

Publications

Publication
Permeability Changes Resulting from Quartz Precipitation and Dissolution around Upper Crustal Intrusions
Scott Samuel W., Driesner Thomas (2018), Permeability Changes Resulting from Quartz Precipitation and Dissolution around Upper Crustal Intrusions, in Geofluids, 2018, 1-19.
The thermal structure and temporal evolution of high-enthalpy geothermal systems
Scott Samuel, Driesner Thomas, Weis Philipp (2016), The thermal structure and temporal evolution of high-enthalpy geothermal systems, in GEOTHERMICS, 33-47.
Geologic controls on supercritical geothermal resources above magmatic intrusions
Scott Samuel, Driesner Thomas, Weis Philipph (2015), Geologic controls on supercritical geothermal resources above magmatic intrusions, in NATURE COMMUNICATIONS, 7837.

Collaboration

Group / person Country
Types of collaboration
Geophysics Department, Schlumberger Cambridge Research Centre Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Geoforschungszentrum Potsdam Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
IMAGE Iceland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Institute of Geophysics, University of Lausanne Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Petroleum Engineering, Heriot Watt University Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Olaf Kolditz, Helmholtz Centre for Environmental Research – UFZ, Leipzi Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
University of Edinburgh, Prof. Dr. Andrew Curtis Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Nationale Gesellschaft für die Lagerung von radioaktiven Abfällen (NAGRA) Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Barbara Lothenbach, EMPA Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Swiss Competence Center on Energy Research - Supply of Electricity (SCCER-SoE) Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
- Exchange of personnel
Department of Geology and Geological Engineering, Colorado School of Mines, Golden CO United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
Equinor Norway (Europe)
- Industry/business/other use-inspired collaboration
International Partnership for Geothermal Technology Iceland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
CNRS Toulouse, France - Geochemistry France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Geophysics Group, University of Adelaide Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Stephan Matthai, Reservoir Engineering, University of Melbourne Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel
Earth, Atmospheric, and Planetary Sciences, MIT, USA - Sulfur geochemistry in hydrothermal systems United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
School of Earth and Space Exploration Arizona State University, USA - Aqueous speciation and biogeo United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Iceland GeoSurvey Iceland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
DRG Iceland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Dr. Thomas Wagner, University of Helsinki, Finnland Finland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Forschungszentrum Jülich, and Universitaet of Aachen Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Reykjavik Energy Iceland (Europe)
- Industry/business/other use-inspired collaboration

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Goldschmidt Conference 2018 Talk given at a conference Supercritical Fluids in Geothermal Systems: An Experimental Study 12.08.2018 Boston, United States of America Hermanska Matylda; Stefansson Andri;
IMAGE final conference Poster Exploring the geothermal heat: Seismic properties as a function of reservoir conditions 04.10.2017 Akureyri, Iceland Grab Melchior Samuel; Maurer Hansruedi;
SCCER-SoE Annual Conference Poster CSMP++GEM for reactive transport modelling with solid solutions 15.09.2017 Birmensdorf, Switzerland Driesner Thomas; Yapparova Alina;
Goldschmidt Conference 2017 Talk given at a conference Towards Green, Widely Applicable, and Low-Cost Geothermal Energy 13.08.2017 Paris, France Stefansson Andri;
Goldschmidt Conference 2017 Talk given at a conference Reactive Transport Modelling of Alteration Assemblages at Butte Magmatic-Hydrothermal System 13.08.2017 Paris, France Kulik Dmitrii; Kosakowski Georg; Yapparova Alina; Driesner Thomas;
Goldschmidt Conference 2017 Talk given at a conference Embedding ‘Rich Chemistry’ into Reactive Transport Modeling of Hydrothermal Systems 13.08.2017 Paris, France Kulik Dmitrii;
IEA Workgroup Meeting Individual talk The COTHERM project 02.05.2017 Florenz, Italy Driesner Thomas;
Seminar of Institute of Petroleum Engineering Individual talk How hydrothermal systems work 07.04.2017 Edinburgh, Great Britain and Northern Ireland Driesner Thomas;
IPGT SC Meeting Individual talk Geothermal Reservoir/Systems Modelling in Switzerland 11.02.2017 Stanford, United States of America Driesner Thomas;
Seminar Geothermie, KIT Individual talk Interplay of heat transfer mechanismsand fluid properties in high-enthalpy geothermal systems 26.01.2017 Karlsruhe, Germany Driesner Thomas;
SCCER-SoE Annual Conference Poster Dynamics of boiling and condensation of saline fluids above magmatic intrusions 12.09.2016 Sion, Switzerland Scott Samuel Warren; Driesner Thomas;
SCCER-SoE Annual Conference Poster COTHERM – Seismic Characterization of Fractured Magmatic Geothermal Reservoirs 12.09.2016 Sion, Switzerland Maurer Hansruedi; Grab Melchior Samuel;
SCCER-SoE Annual Conference Poster Reactive transport modelling of two-phase geothermal systems 12.09.2016 Sion, Switzerland Yapparova Alina; Driesner Thomas; Kulik Dmitrii;
EGU General Assembly Talk given at a conference The formation of alteration rims in basaltic lava flows upon hydrothermal circulation 17.04.2016 Vienna, Austria Kulik Dmitrii; Kosakowski Georg; Grab Melchior Samuel; Driesner Thomas;
EGU General Assembly Talk given at a conference Seismic properties of fluid bearing formations in magmatic geothermal systems: can we directly detect geothermal activity with seismic methods? 17.04.2016 Vienna, Austria Grab Melchior Samuel; Scott Samuel Warren; Maurer Hansruedi;
EGU General Assembly Poster Characterization of seismic properties across scales: from the laboratory to the field scale 17.04.2016 Vienna, Austria Grab Melchior Samuel; Maurer Hansruedi; Scott Samuel Warren;
Swiss Geoscience Meeting Poster The Thermal Structure of High-Enthalpy Geothermal Systems 20.11.2015 Basel, Switzerland Scott Samuel Warren; Driesner Thomas;
Swiss Geoscience Meeting Poster Fluid-rock interactions in Icelandic hydrothermal systems 20.11.2015 Basel, Switzerland Kulik Dmitrii; Kosakowski Georg; Thien Bruno;
SCCER-SoE Annual Conference Poster S. Scott, T. Driesner, P. Weis 10.09.2015 Neuchatel, Switzerland Driesner Thomas; Grab Melchior Samuel;
SCCER-SoE Annual Conference Poster Fluid-Rock Interactions in Icelandic Hydrothermal Systems 10.09.2015 Neuchatel, Switzerland Kulik Dmitrii; Kosakowski Georg; Thien Bruno;


Self-organised

Title Date Place
SCCER-SoE PhD School 13.10.2015 Grimsel, Switzerland

Knowledge transfer events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Workshop on supercritical geothermal fluids Workshop 11.07.2018 Zuerich, Switzerland
Advanced Modelling Methods for Developing Supercritical geothermal Resources Workshop 17.01.2018 Zuerich, Switzerland


Associated projects

Number Title Start Funding scheme
135302 Quantitative Modeling of Ore-Forming Hydrothermal Systems 01.04.2011 Project funding (Div. I-III)
172851 Key problems of heat and mass transfer in the earth's crust 01.05.2017 Project funding (Div. I-III)
141843 COTHERM - COmbined hydrological, geochemical and geophysical modelling of geotTHERMal systems 01.09.2012 Sinergia
172851 Key problems of heat and mass transfer in the earth's crust 01.05.2017 Project funding (Div. I-III)
153971 Modelling permeability and stimulation for deep heat mining 01.11.2014 NRP 70 Energy Turnaround

Abstract

We propose a 12 month follow-up to the original 36 month COTHERM project, mostly to address new questions in the field of magmatically-driven, natural geothermal systems that emerged during the first two years of COTHERM. COTHERM started in 2012 as a synergistic collaboration with four sub-projects (SP1: The thermo-physical hydrology of geothermal systems , SP2: Geochemical reactive transport modeling of fluid-rock interaction, SP3: Characterizing geothermal systems with geophysical methods, SP4: Dynamics of active geothermal systems) to advance our understanding of the fundamental geological, chemical, and physical processes governing the sub-surface structure and dynamics of geothermal systems. COTHERM closely collaborates with several national and international projects such as IDDP, IPGT, IMAGE, and others.Our follow-up project will address fundamental questions regarding a new type of geothermal resources (so-called “supercritical resources”) that were recently discovered at Krafla Volcano, Iceland. Supercritical resources bear the potential to boost geothermal power production by up to an order of magnitude per well. During the COTHERM project we have developed the scientific and collaborative expertise to optimally address these problems. Besides SP-specific work, we propose several collaborative tasks involving two or more SPs:•Locating supercritical resources (collaboration mainly between SPs 1 and 3): Simulations of SP1 will indicate and define criteria for locating supercritical resources within a given system. SP3 will utilize the simulation results to evaluate possibilities of imaging the supercritical parts of geothermal systems.•Influence of heterogeneous host rock alteration on geothermal system structure (collaboration mainly between SP2 and SP1). SP2 found that the layered permeability distribution resulting from different degrees of alteration in lava flows and hyaloclastite layers may have strong influence on a geothermal system’s evolution. We will investigate this hypothesis from the thermo-hydraulic (SP1) and reactive transport (SP2) point of view. If strong feedbacks are detected, this will have mutual feedbacks on how the two collaborating SPs will proceed with their work.•Chemistry of supercritical geothermal fluids. SP4 has successfully proposed a conceptual model for the formation of supercritical fluids in geothermal systems and linking those to the observations the Krafla system. Unfortunately, for the lack of a comprehensive model for the thermodynamic data of solutes in supercritical aqueous fluids, this conceptual model cannot be simulated in its entirety. SP4 (field data and geochemical modeling), SP2 (reactive transport aspects), and S1 (fluid flow modeling) will therefore test and validate different aspects of the conceptual model in a collaborative effort.We expect that our collaborative research will continue to advance the quantitative understanding of the dynamic evolution of (supercritical) geothermal systems. Four young scientists from different geoscience sub-disciplines will work together and will to learn to communicate across boundaries. Such innovative young researchers who will ideally also function as multipliers for integrative research approaches towards better understanding the highly coupled, complex processes in geothermal systems and will be a key asset in Switzerland’s ongoing efforts to assess the potential of geothermal energy in this country.
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