Prof. Dr. Thomas Kohl

Prof. Dr. Thomas Kohl

  • Adenauerring 20b

    76131 Karlsruhe

Profile

Research Fields

  • Deep geothermal systems (with focus on induced seismicity and geomechanical fracture behavior)
  • Numerical methods
  • Coupled thermal-hydraulic-mechanic-chemical processes in fractured rock
  • Stress field analysis

Curriculum Vitae

Professor Dr. Thomas Kohl holds the Chair of Geothermal Energy and Reservoir Technology at the Institute of Applied Geosciences and is head of the Geoenergy subtopic in the MTET (Materials and Technologies for the Energy Transition) program in the Helmholtz Association.

Following his graduation from the Technical University of Karlsruhe with a degree in geophysics, Thomas Kohl assumed the role of research assistant at the CNRS in Paris, specialising in seismology. In 1992, he obtained his doctorate from ETH Zurich, researching coupled processes in deep geothermal systems. Following the successful completion of his habilitation, he was appointed as a lecturer at ETH Zurich in 1999, a position he held in recognition of his proven expertise in the field of subsurface systems, with a particular focus on geothermal applications. The code FRACTure on coupled hydraulic-thermal-mechanical processes, which has gained international recognition, was employed to characterize the behavior of fractured rock reservoirs in complex subsurface conditions. This position was held concurrently with his role as co-founder of GEOWATT AG in Zurich. He assumed the role of Chief Executive Officer at GEOWATT AG, a medium-sized enterprise derived from ETH, from 2003 until 2011. In this capacity, Kohl participated in European and national research projects and successfully implemented numerous geothermal research projects in Switzerland, Germany, Hungary, the USA, and France.

At KIT in Karlsruhe, his research is centred on the investigation of thermal-hydraulic-mechanical-chemical processes (THMC) in fractured reservoirs and high-temperature geothermal heat storage systems (geothermal batteries). Of particular interest are the origin of induced seismicity and the flow through fractures with rough surfaces, and their effects on reservoir behaviour.

Thomas Kohl is one of the initiators of the European Geothermal Workshop (EGW), which was originally held jointly with the University of Strasbourg and is now organised at the european level. He is an active participant in scientific committees on an international level. At KIT, he has established a number of teaching modules and is involved in international master's programmes. Furthermore, he fulfils the role of Editor-in-Chief for both the Geothermal Energy Journal and the special issues of Geothermics. In addition to this, he is a member of the International Heat Flow Commission (IASPEI) and the EERA JPGE management board. He has delivered numerous presentations and invited talks at high-level scientific conferences and is the author of more than 100 reviewed manuscripts in renowned journals. He is engaged in collaborative endeavours pertaining to a multitude of industrial projects on a global scale. Since 2017, he has served as the spokesperson for the working group "Geothermal Energy" of the German Geophysical Society. Thomas Kohl is co-initiator and coordinator of the large-scale research infrastructure projects GeoLaB and DeepStor.

Education and Professional Experience

1981 - 1988 Study of Geophysics at the Technical University Karlsruhe
1987 - 1988 Post graduate researcher at CNRS (Centre National de la Recherche Scientifique) Paris
1988 - 1992 PhD thesis at Institute of Geophysics at ETHZ (ETH Zurich)
1991 - 1996 Research Assistant / Postdoc at ETH Zurich
1997 - 2003 Senior Researcher (Oberassistent) at ETH Zurich
1999 Habilitation at ETH Zurich and nomination as Assoc. Professor (Privatdozent)
2002 - 2011 Founder and CEO of the company GEOWATT AG in Zurich
2006 - 2010 Honorary Professor at University Freiburg
Since 2010 Full Professor at KIT Karlsruhe

Activities in the Scientific Community, Honors, Awards

1994 - 1996 Chairperson Institute's Council at Institute of Geophysics, ETH Zurich
1996 Young Scientists' Publication Award of European Geophysical Society (EGS)
1998 - 2003 Representative of IASPEI in Swiss National Committee of IUGG
1999 Best Paper Award at Geothermal Resource Council (GRC)
2000 - 2008 Board member of Swiss Geothermal Association
2000 - 2010 Board member of Swiss Geophysical Commission
Since 2003 Member of "International Heat Flow Commission" of IASPEI
2005 - 2010 Board member of CREGE (Centre de Recherche en Géothermie), Neuchâtel
2010 - 2015 Member Faculty Council (Fakultätsrat), Dept. Civ. Engin., Geo & Envir. Sciences, KIT
Since 2010 Scientific Speaker of German Geothermal Economic Forum
Since 2011 Deputy of EERA- JPGE SP 2 "Accessing & Engineering of the Reservoir"
Since 2012 Responsible of the Helmholtz Topic "Geothermal Energy Systems" at KIT
Since 2013 Editor-in-Chief of Journal of Geothermal Energy, Guest Editor of Geothermics
2015 Henry J. Ramey Award of GRC for "seminal contributions to the modeling of hydraulic stimulation of EGS reservoirs and fluid flow in fractured media, and for mentoring the next generation of geothermal reservoir engineers"

Teaching Experience

 

1997 - 2011 Courses at ETHZ: Borehole Geophysics, Theoretical Gravimetry & Geomagnetics, Geothermal
1993 - 2014 Post-diploma courses at EPF Lausanne, Universities Neuchâtel, University Zürich, Engineer. Colleges in Switzerland / Germany on Numerical Modelling, Geothermal Utilization
1997 - 2010 Supervisor of theses: 3x Diploma, 2 x PhD (all ETHZ), 3 x PhD, 1 x habilitation
2006 - 2010 Courses of Borehole Geophysics and Geothermal at University Freiburg
Since 2010 Education program at KIT with 5 course modules (Borehole Technology, Heat Transport in Earth, Applied Geothermics, Geothermal Research Topics, Numerical Methods Earth Science)
Since 2010 Theses primary supervisor: 9 x Dissertations (2 x "summa cum laude" both with awards), 10 x Msc (2 awards), 5 x BSc, sec. supervisor/committee member: 10 x PhD


Profile Links

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Das GeoLaB-Projekt

Publications (ISI/Scopus referenced)


2025
Investigating the impact of wellbore lateral heat transfer on the performance of high-temperature aquifer thermal energy storage system by the coupling of wellbore and reservoir simulators
Yan, G.; Andersen, P. Ø.; Qiao, Y.; Hatzignatiou, D. G.; Feng, B.; Kohl, T.
2025. Geoenergy Science and Engineering, 251, 213874. doi:10.1016/j.geoen.2025.213874
Karst control on reservoir performance of a developed carbonate geothermal reservoir in Munich, Germany
Hörbrand, T.; Beichel, K.; Bendias, D.; Savvatis, A.; Kohl, T.
2025. Geological Society, London, Special Publications, 548 (1), 291–310. doi:10.1144/SP548-2024-42
Design of silica nanoparticle tracers with optimized dispersion stability, sorption and deposition properties based on (X)DLVO and filtration theory
Spitzmüller, L.; Berson, J.; Kohl, T.; Schimmel, T.; Nitschke, F.
2025. Geothermics, 130, Article no: 103309. doi:10.1016/j.geothermics.2025.103309
2024
Stress state at faults: the influence of rock stiffness contrast, stress orientation, and ratio
Ziegler, M. O.; Seithel, R.; Niederhuber, T.; Heidbach, O.; Kohl, T.; Müller, B.; Rajabi, M.; Reiter, K.; Röckel, L.
2024. Solid Earth, 15 (8), 1047–1063. doi:10.5194/se-15-1047-2024
Machine learning for robust structural uncertainty quantification in fractured reservoirs
Dashti, A.; Stadelmann, T.; Kohl, T.
2024. Geothermics, 120, Art.-Nr.: 103012. doi:10.1016/j.geothermics.2024.103012
Numerical modeling of temperature-reporting nanoparticle tracer for fractured geothermal reservoir characterization
Guoqiang, Y.; Andersen, P. Ø.; Qiao, Y.; Hatzignatiou, D. G.; Nitschke, F.; Spitzmüller, L.; Kohl, T.
2024. Geoenergy Science and Engineering, 237, 212787. doi:10.1016/j.geoen.2024.212787
Reporting nanoparticle tracers: Validation of performance in flow-through experiments simulating reservoir conditions
Berson, J.; Rudolph, B.; Spitzmüller, L.; Kohl, T.; Schimmel, T.
2024. Journal of Hydrology, 637, Art.-Nr.: 131429. doi:10.1016/j.jhydrol.2024.131429
GenEOS: An accurate equation of state for the fast calculation of two-phase geofluids properties based on gene expression programming
Esmaeilpour, M.; Nitschke, F.; Kohl, T.
2024. Computer Physics Communications, 297, Art.-Nr.: 109068. doi:10.1016/j.cpc.2023.109068
Development of Reactive Transport Models for Very High Temperature Heat Aquifer Storage (VESTA) at a Pilot Site in Germany
Kumar, R.; Neupane, G.; Jin, W.; Atkinson, T.; McLing, T.; Smith, R.; Zhang, Y.; Dobson, P.; Schill, E.; Kohl, T.; Bauer, F.; Nitschke, F.; Bremer, J.
2024. Transactions - Geothermal Resources Council, Waikoloa, 27th - 30th October 2024, 1168 – 1183
Temperature stability and enhanced transport properties by surface modifications of silica nanoparticle tracers for geo-reservoir exploration
Spitzmüller, L.; Berson, J.; Schimmel, T.; Kohl, T.; Nitschke, F.
2024. Scientific Reports, 14 (1), Art.-Nr.: 19222. doi:10.1038/s41598-024-70132-z
Titania-Mediated Stabilization of Fluorescent Dye Encapsulation in Mesoporous Silica Nanoparticles
Spitzmüller, L.; Berson, J.; Nitschke, F.; Kohl, T.; Schimmel, T.
2024. Nanoscale Advances, 6 (13), 3450–3461. doi:10.1039/D4NA00242C
Developing meshing workflows in Gmsh v4.11 for the geologic uncertainty assessment of high-temperature aquifer thermal energy storage
Dashti, A.; Grimmer, J. C.; Geuzaine, C.; Bauer, F.; Kohl, T.
2024. Geoscientific Model Development, 17 (8), 3467–3485. doi:10.5194/gmd-17-3467-2024
Risk of surface movements and reservoir deformation for high-temperature aquifer thermal energy storage (HT-ATES)
Stricker, K.; Egert, R.; Schill, E.; Kohl, T.
2024. Geothermal Energy, 12, Art.-Nr.: 4. doi:10.1186/s40517-024-00283-9
Challenges and Opportunities for Lithium Extraction from Geothermal Systems in Germany Part 3: The Return of the Extraction Brine
Goldberg, V.; Dashti, A.; Egert, R.; Benny, B.; Nitschke, F.; Kohl, T.
2024. Proceedings - European Metallurgical Conference (EMC), Volume 1, Düsseldorf, 11th - 14th June 2023, 185 – 206, GDMB Verlag GmbH
2023
AnnRG - An artificial neural network solute geothermometer
Ystroem, L. H.; Vollmer, M.; Kohl, T.; Nitschke, F.
2023. Applied Computing and Geosciences, 20, Art.-Nr.: 100144. doi:10.1016/j.acags.2023.100144
Spatial Characterization of Channeling in Sheared Rough‐Walled Fractures in the Transition to Nonlinear Fluid Flow
Egert, R.; Nitschke, F.; Gholami Korzani, M.; Kohl, T.
2023. Water Resources Research, 59 (10), Art.: e2022WR034362. doi:10.1029/2022WR034362
Challenges and Opportunities for Lithium Extraction from Geothermal Systems in Germany—Part 3: The Return of the Extraction Brine
Goldberg, V.; Dashti, A.; Egert, R.; Benny, B.; Kohl, T.; Nitschke, F.
2023. Energies, 16 (16), Art.-Nr.: 5899. doi:10.3390/en16165899
Development of a continuous silica treatment strategy for metal extraction processes in operating geothermal plants
Goldberg, V.; Winter, D.; Nitschke, F.; Held, S.; Groß, F.; Pfeiffle, D.; Uhde, J.; Morata, D.; Koschikowski, J.; Kohl, T.
2023. Desalination, 564, Artkl.Nr.: 116775. doi:10.1016/j.desal.2023.116775
Stochastic performance assessment on long-term behavior of multilateral closed deep geothermal systems
Esmaeilpour, M.; Gholami Korzani, M.; Kohl, T.
2023. Renewable Energy, 208, 26–35. doi:10.1016/j.renene.2023.03.074
Importance of drilling-related processes on the origin of borehole breakouts — Insights from LWD observations
Stricker, K.; Schimschal, S.; Müller, B.; Wessling, S.; Bender, F.; Kohl, T.
2023. Geomechanics for Energy and the Environment, Art.-Nr.: 100463. doi:10.1016/j.gete.2023.100463
Dissolution control and stability improvement of silica nanoparticles in aqueous media
Spitzmüller, L.; Nitschke, F.; Rudolph, B.; Berson, J.; Schimmel, T.; Kohl, T.
2023. Journal of Nanoparticle Research, 25 (3), Article no: 40. doi:10.1007/s11051-023-05688-4
Optimizing scenarios of a deep geothermal aquifer storage in the southern Upper Rhine Graben
Stober, I.; Jägle, M.; Kohl, T.
2023. Geothermal Energy, 11 (1), Art.Nr.: 34. doi:10.1186/s40517-023-00275-1
Transport mechanisms of hydrothermal convection in faulted tight sandstones
Guoqiang, Y.; Busch, B.; Egert, R.; Esmaeilpour, M.; Stricker, K.; Kohl, T.
2023. Solid Earth, 14 (3), 293–310. doi:10.5194/se-14-293-2023
Impact of structural uncertainty on tracer test design in faulted geothermal reservoirs
Dashti, A.; Gholami Korzani, M.; Geuzaine, C.; Egert, R.; Kohl, T.
2023. Geothermics, 107, Art.-Nr.: 102607. doi:10.1016/j.geothermics.2022.102607
2022
MulT_predict - An optimised comprehensive multicomponent geothermometer
Ystroem, L. H.; Nitschke, F.; Kohl, T.
2022. Geothermics, 105, Art.-Nr.: 102548. doi:10.1016/j.geothermics.2022.102548
Impact of thermosiphoning on long-term behavior of closed-loop deep geothermal systems for sustainable energy exploitation
Esmaeilpour, M.; Korzani, M. G.; Kohl, T.
2022. Renewable Energy, 194, 1247–1260. doi:10.1016/j.renene.2022.06.014
Sub-Lineage Specific Phenolic Glycolipid Patterns in the Mycobacterium tuberculosis Complex Lineage 1
Gisch, N.; Utpatel, C.; Gronbach, L. M.; Kohl, T. A.; Schombel, U.; Malm, S.; Dobos, K. M.; Hesser, D. C.; Diel, R.; Götsch, U.; Gerdes, S.; Shuaib, Y. A.; Ntinginya, N. E.; Khosa, C.; Viegas, S.; Kerubo, G.; Ali, S.; Al-Hajoj, S. A.; Ndung’u, P. W.; Rachow, A.; Hoelscher, M.; Maurer, F. P.; Schwudke, D.; Niemann, S.; Reiling, N.; Homolka, S.
2022. Frontiers in Microbiology, 13, Art.Nr. 832054. doi:10.3389/fmicb.2022.832054
2021
Uncertainty analysis of numerical inversions of temperature logs from boreholes under injection conditions
Wang, J.; Nitschke, F.; Gaucher, E.; Kohl, T.
2021. Journal of Geophysics and Engineering, 18 (6), 1022–1034. doi:10.1093/jge/gxab069
Selective Silica Removal in Geothermal Fluids : Implications for Applications for Geothermal Power Plant Operation and Mineral Extraction
Spitzmüller, L.; Goldberg, V.; Held, S.; Grimmer, J. C.; Winter, D.; Genovese, M.; Koschikowski, J.; Kohl, T.
2021. Geothermics, 95, Art.-Nr. 102141. doi:10.1016/j.geothermics.2021.102141
Stochastic 3D Navier‐Stokes Flow in Self‐Affine Fracture Geometries Controlled by Anisotropy and Channeling
Egert, R.; Nitschke, F.; Gholami Korzani, M.; Kohl, T.
2021. Geophysical research letters, 48 (9), e2020GL092138. doi:10.1029/2020GL092138
The potential of raw material extraction from thermal brines – Successful milestones of the BrineMine project
Goldberg, V.; Winter, D.; Nitschke, F.; Rath, M.; Held, S.; Spitzmüller, L.; Budach, I.; Pavez, M.; Morata, D.; Koschikowski, J.; Kohl, T.
2021. Oil gas, (01), 26–33. doi:10.19225/210306
2020
The Potential of Depleted Oil Reservoirs for High-Temperature Storage Systems
Stricker, K.; Grimmer, J. C.; Egert, R.; Bremer, J.; Gholami Korzani, M.; Schill, E.; Kohl, T.
2020. Energies, 13 (24), Art.-Nr.: 6510. doi:10.3390/en13246510
Development of thermo-reporting nanoparticles for accurate sensing of geothermal reservoir conditions
Rudolph, B.; Berson, J.; Held, S.; Nitschke, F.; Wenzel, F.; Kohl, T.; Schimmel, T.
2020. Scientific reports, 10 (1), Article: 11422. doi:10.1038/s41598-020-68122-y
GeoLaB – Das geowissenschaftliche Zukunftsprojekt für Deutschland
Schätzler, K.; Bremer, J.; Schill, E.; Kohl, T.; Kühn, M.; Kolditz, O.; Sass, I.
2020. Mining report, 156 (6)
Visualizing preferential magmatic and geothermal fluid pathways via electric conductivity at Villarrica Volcano, S-Chile
Pavez, M.; Schill, E.; Held, S.; Díaz, D.; Kohl, T.
2020. Journal of volcanology and geothermal research, 400, Art. Nr.: 106913. doi:10.1016/j.jvolgeores.2020.106913
Numerical based filtering concept for feasibility evaluation and reservoir performance enhancement of hydrothermal doublet systems
Gholami Korzani, M.; Held, S.; Kohl, T.
2020. Journal of petroleum science and engineering, 190, Art.Nr. 106803. doi:10.1016/j.petrol.2019.106803
Implications on large-scale flow of the fractured EGS reservoir Soultz inferred from hydraulic data and tracer experiments
Egert, R.; Gholami Korzani, M.; Held, S.; Kohl, T.
2020. Geothermics, 84, 101749. doi:10.1016/j.geothermics.2019.101749
Pseudo-probabilistic identification of fracture network in seismic clouds driven by source parameters
Koepke, R.; Gaucher, E.; Kohl, T.
2020. Geophysical journal international, 223 (3), 2066–2084. doi:10.1093/gji/ggaa441
A multicomponent geothermometer for high-temperature basalt settings
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2020. Geothermal Energy, 8 (1), Art. Nr.: 2. doi:10.1186/s40517-020-0158-z
A Stochastic Study of Flow Anisotropy and Channelling in Open Rough Fractures
Marchand, S.; Mersch, O.; Selzer, M.; Nitschke, F.; Schoenball, M.; Schmittbuhl, J.; Nestler, B.; Kohl, T.
2020. Rock mechanics and rock engineering, 53, 233–249. doi:10.1007/s00603-019-01907-4
2019
Temperature log simulations in high-enthalpy boreholes
Wang, J.; Nitschke, F.; Gholami Korzani, M.; Kohl, T.
2019. Geothermal Energy, 7 (1), 32. doi:10.1186/s40517-019-0149-0
Probability of fault reactivation in the Bavarian Molasse Basin
Seithel, R.; Gaucher, E.; Mueller, B.; Steiner, U.; Kohl, T.
2019. Geothermics, 82, 81–90. doi:10.1016/j.geothermics.2019.06.004
A normal-faulting stress regime in the Bavarian Foreland Molasse Basin? New evidence from detailed analysis of leak-off and formation integrity tests in the greater Munich area, SE-Germany
Drews, M. C.; Seithel, R.; Savvatis, A.; Kohl, T.; Stollhofen, H.
2019. Tectonophysics, 755, 1–9. doi:10.1016/j.tecto.2019.02.011
2018
Triaxial testing and hydraulic–mechanical modeling of sandstone reservoir rock in the Upper Rhine Graben
Egert, R.; Seithel, R.; Kohl, T.; Stober, I.
2018. Geothermal Energy, 6 (1), Article no UNSP 23. doi:10.1186/s40517-018-0109-0
Geochemical characterization of the geothermal system at Villarrica volcano, Southern Chile; Part 1: Impacts of lithology on the geothermal reservoir
Held, S.; Schill, E.; Schneider, J.; Nitschke, F.; Morata, D.; Neumann, T.; Kohl, T.
2018. Geothermics, 74, 226–239. doi:10.1016/j.geothermics.2018.03.004
Geochemical characterization of the Villarrica geothermal system, Southern Chile, part II : Site-specific re-evaluation of SiO₂ and Na-K solute geothermometers
Nitschke, F.; Held, S.; Neumann, T.; Kohl, T.
2018. Geothermics, 74, 217–225. doi:10.1016/j.geothermics.2018.03.006
Acceptability of geothermal installations : A geoethical concept for GeoLaB
Meller, C.; Schill, E.; Bremer, J.; Kolditz, O.; Bleicher, A.; Benighaus, C.; Chavot, P.; Gross, M.; Pellizzone, A.; Renn, O.; Schilling, F.; Kohl, T.
2018. Geothermics, 73, 133–145. doi:10.1016/j.geothermics.2017.07.008
Comparison of different digital elevation models and satellite imagery for lineament analysis: Implications for identification and spatial arrangement of fault zones in crystalline basement rocks of the southern Black Forest (Germany)
Meixner, J.; Grimmer, J. C.; Becker, A.; Schill, E.; Kohl, T.
2018. Journal of structural geology, 108, 256–268. doi:10.1016/j.jsg.2017.11.006
2017
The new Geothermal Energy: Science, Society, and Technology
Kolditz, O.; Gutiérrez-Negrín, L. C.; Huenges, E.; Jakobs, L.; Kohl, T.; Moeck, I.
2017. Geothermal Energy, 5 (1), Art. Nr. 21. doi:10.1186/s40517-017-0078-8
Correction to: Flow-through experiments on the interaction of sandstone with Ba-rich fluids at geothermal conditions
Orywall, P.; Drüppel, K.; Kuhn, D.; Kohl, T.; Zimmermann, M.; Eiche, E.
2017. Geothermal Energy, 5 (1), Art. Nr. 23. doi:10.1186/s40517-017-0083-y
Flow-through experiments on the interaction of sandstone with Ba-rich fluids at geothermal conditions
Orywall, P.; Drüppel, K.; Kuhn, D.; Kohl, T.; Zimmermann, M.; Eiche, E.
2017. Geothermal Energy, 5 (1), Art. Nr.: 20. doi:10.1186/s40517-017-0079-7
Contribution of the Surface and Down-Hole Seismic Networks to the Location of Earthquakes at the Soultz-sous-Forêts Geothermal Site (France)
Kinnaert, X.; Gaucher, E.; Kohl, T.; Achauer, U.
2017. Pure and applied geophysics, 175 (3), 757–772. doi:10.1007/s00024-017-1753-1
Effect of flow and physical parameters on the mineral deposition of geothermal wellbores: WellboreKit development
Nusiaputra, Y.; Dimier, A. D.; Nitschke, F. N.; Gaucher, E. G.; Kohl, T. K.
2017. 79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter; Paris; France; 12 June 2017 through 15 June 2017, EAGE (European Association of Geoscientists & Engineers). doi:10.3997/2214-4609.201701326
Assessment of performance and parameter sensitivity of multicomponent geothermometry applied to a medium enthalpy geothermal system
Nitschke, F.; Held, S.; Villalon, I.; Neumann, T.; Kohl, T.
2017. Geothermal Energy, 5 (1), 12. doi:10.1186/s40517-017-0070-3
Hydraulic performance history at the Soultz EGS reservoirs from stimulation and long-term circulation tests
Schill, E.; Genter, A.; Cuenot, N.; Kohl, T.
2017. Geothermics, 70, 110–124. doi:10.1016/j.geothermics.2017.06.003
Analysis of borehole breakout development using continuum damage mechanics
Sahara, D. P.; Schoenball, M.; Gerolymatou, E.; Kohl, T.
2017. International journal of rock mechanics and mining sciences, 97, 134–143. doi:10.1016/j.ijrmms.2017.04.005
Integrated Research as Key to the Development of a Sustainable Geothermal Energy Technology
Meller, C.; Bremer, J.; Ankit, K.; Baur, S.; Bergfeldt, T.; Blum, P.; Canic, T.; Eiche, E.; Gaucher, E.; Hagenmeyer, V.; Heberling, F.; Held, S.; Herfurth, S.; Isele, J.; Kling, T.; Kuhn, D.; Mayer, D.; Müller, B.; Nestler, B.; Neumann, T.; Nitschke, F.; Nothstein, A.; Nusiaputra, Y.; Orywall, P.; Peters, M.; Sahara, D.; Schäfer, T.; Schill, E.; Schilling, F.; Schröder, E.; Selzer, M.; Stoll, M.; Wiemer, H.-J.; Wolf, S.; Zimmermann, M.; Kohl, T.
2017. Energy technology, 5 (7), 965–1006. doi:10.1002/ente.201600579
THC simulation of halite scaling in deep geothermal single well production
Nitschke, F.; Held, S.; Himmelsbach, T.; Kohl, T.
2017. Geothermics, 65, 234–243. doi:10.1016/j.geothermics.2016.09.009
2016
Structural control of geothermal reservoirs in extensional tectonic settings: An example from the Upper Rhine Graben
Meixner, J.; Schill, E.; Grimmer, J. C.; Gaucher, E.; Kohl, T.; Klingler, P.
2016. Journal of structural geology, 82, 1–15. doi:10.1016/j.jsg.2015.11.003
Resistivity distribution from mid-crustal conductor to near-surface across the 1200 km long Liquiñe-Ofqui Fault System, southern Chile
Held, S.; Schill, E.; Pavez, M.; Díaz, D.; Muñoz, G.; Morata, D.; Kohl, T.
2016. Geophysical journal international, 207 (3), 1387–1400. doi:10.1093/gji/ggw338
Modelling earthquake location errors at a reservoir scale: a case study in the Upper Rhine Graben
Kinnaert, X.; Gaucher, E.; Achauer, U.; Kohl, T.
2016. Geophysical journal international, 206 (2), 861–879. doi:10.1093/gji/ggw184
Criteria and geological setting for the generic geothermal underground research laboratory, GEOLAB
Schill, E.; Meixner, J.; Meller, C.; Grimm, M.; Grimmer, J. C.; Stober, I.; Kohl, T.
2016. Geothermal Energy, 4 (1), 4:7. doi:10.1186/s40517-016-0049-5
Preface
Blankenship, D.; Dobson, P.; Garg, S.; Ghassemi, A.; Kohl, T.
2016. Geothermics, 63, 1. doi:10.1016/j.geothermics.2016.04.001
2015
Induced seismicity in geothermal reservoirs: A review of forecasting approaches
Gaucher, E.; Schoenball, M.; Heidbach, O.; Zang, A.; Fokker, P. A.; Wees, J.-D. van; Kohl, T.
2015. Renewable & sustainable energy reviews, 52, 1473–1490. doi:10.1016/j.rser.2015.08.026
Deep geothermal: The ‘Moon Landing’ mission in the unconventional energy and minerals space
Regenauer-Lieb, K.; Bunger, A. P.; Chua, H.; Dyskin, A. V.; Fusseis, F. F.; Gaede, O.; Jeffrey, R. G.; Karrech, A.; Kohl, T.; Liu, J.; Lyakhovsky, V. A.; Pasternak, E. G.; Podgorney, R. K.; Poulet, T.; Rahman, S.; Schrank, C. E.; Trefry, M. G.; Veveakis, E.; Wu, B.; Yuen, D.; Wellmann, F.; Zhang, X.
2015. Journal of earth science, 26 (1), 2–10. doi:10.1007/s12583-015-0515-1
Local stress anomaly in the Bavarian Molasse Basin
Seithel, R.; Steiner, U.; Müller, B.; Hecht, C.; Kohl, T.
2015. Geothermal Energy, 3 (4), 1–22. doi:10.1186/s40517-014-0023-z
Hydrochemical characterisation of a Major central European heat flux anomaly: the Bürchau geothermal spring system, Southern Black Forest, Germany
Rolker, J.; Schill, E.; Stober, I.; Schneider, J.; Neumann, T.; Kohl, T.
2015. Geothermal Energy, 3 (5), 1–18. doi:10.1186/s40517-014-0021-1
2014
Corrosion and scaling in the geothermal cycle of Soultz-sous-Forêts (France)
Mundhenk, N.; Huttenloch, P.; Scheiber, J.; Genter, A.; Kohl, T.; Zorn, R.
2014. Corrosion Conference and Expo 2014 : Collaborate. Educate. Innovate. Mitigate, San Antonio, Texas, USA, 9-13 March 2014, 2361–2374, NACE International
Economic evaluation of geothermal reservoir performance through modeling the complexity of the operating EGS in Soultz-sous-Forêts
Held, S.; Genter, A.; Kohl, T.; Kölbel, T.; Sausse, J.; Schoenball, M.
2014. Geothermics, 51, 270–280. doi:10.1016/j.geothermics.2014.01.016
Electrochemical study of the corrosion of different alloys exposed to deaerated 80°C geothermal brines containing CO₂
Mundhenk, N.; Huttenloch, P.; Bäßler, R.; Kohl, T.; Steger, H.; Zorn, R.
2014. Corrosion science, 84, 180–188. doi:10.1016/j.corsci.2014.03.027
Change of stress regime during geothermal reservoir stimulation
Schoenball, M.; Dorbath, L.; Gaucher, E.; Wellmann, J. F.; Kohl, T.
2014. Geophysical research letters, 41 (4), 1163–1170. doi:10.1002/2013GL058514
Damage event analysis of drilling borehole heat exchangers in Baden-Württemberg, Germany = [Schadensfallanalyse von Erdwärmesondenbohrungen in Baden-Württemberg]
Grimm, M.; Stober, I.; Kohl, T.; Blum, P.
2014. Grundwasser, 19 (4), 275–286. doi:10.1007/s00767-014-0269-1
Identification and characterization of hydrothermally altered zones in granite by combining synthetic clay content logs with magnetic mineralogical investigations of drilled rock cuttings
Meller, C.; Kontny, A.; Kohl, T.
2014. Geophysical journal international, 199 (1), 465–479. doi:10.1093/gji/ggu278
Impact of fracture networks on borehole breakout heterogeneities in crystalline rock
Sahara, D. P.; Schoenball, M.; Kohl, T.; Müller, B. I. R.
2014. International journal of rock mechanics and mining sciences, 71, 301–309. doi:10.1016/j.ijrmms.2014.07.001
Large magnitude events during injections in geothermal reservoirs and hydraulic energy: A heuristic approach
Baujard, C.; Schoenball, M.; Kohl, T.; Dorbath, L.
2014. Geothermics, 52, 104–152. doi:10.1016/j.geothermics.2014.07.002
Time-dependent brittle creep as mechanism for time-delayed wellbore failure
Schoenball, M.; Sahara, D. P.; Kohl, T.
2014. International journal of rock mechanics and mining sciences, 70, 400–406. doi:10.1016/j.ijrmms.2014.05.012
Inferring the in situ stress regime in deep sediments: an example from the Bruchsal geothermal site
Meixner, J.; Schill, E.; Gaucher, E.; Kohl, T.
2014. Geothermal Energy, 2, Art. Nr. 7. doi:10.1186/s40517-014-0007-z
The significance of hydrothermal alteration zones for the mechanical behavior of a geothermal reservoir
Meller, C.; Kohl, T.
2014. Geothermal Energy, 2 (12), 1–21. doi:10.1186/s40517-014-0012-2
2013
Corrosion and scaling as interrelated phenomena in an operating geothermal power plant
Mundhenk, N.; Huttenloch, P.; Sanjuan, B.; Kohl, T.; Steger, H.; Zorn, R.
2013. Corrosion science, 70, 17–28. doi:10.1016/j.corsci.2013.01.003
Metal corrosion in geothermal brine environments of the Upper Rhine graben : Laboratory and on-site studies
Mundhenk, N.; Huttenloch, P.; Kohl, T.; Steger, H.; Zorn, R.
2013. Geothermics, 46, 14–21. doi:10.1016/j.geothermics.2012.10.006
Geothermal energy systems : research perspective for domestic energy provision
Huenges, E.; Kohl, T.; Kolditz, O.; Bremer, J.; Scheck-Wenderoth, M.; Vienken, T.
2013. Environmental earth sciences, 70 (8), 3927–3933. doi:10.1007/s12665-013-2881-2
The Peculiar shut-In behavior of the Well GPK2 at soultz-sous-Forêts
Schoenball, M.; Kohl, T.
2013. Transactions - Geothermal Resources Council, 37 (1), 217–220
The application of a neural network to map clay zones in crystalline rock
Meller, C.; Genter, A.; Kohl, T.
2013. Geophysical journal international, 196 (2), 837–849. doi:10.1093/gji/ggt423
2012
The role of triggering by static stress transfer during geothermal reservoir stimulation – STRESS TRANSFER DURING STIMULATION
Schoenball, M.; Baujard, C.; Kohl, T.; Dorbath, L.
2012. Journal of Geophysical Research: Solid Earth, 117 (B9). doi:10.1029/2012JB009304
Laboratory and In-Situ Corrosion Studies in Geothermal Environments
Mundhenk, N.; Huttenloch, P.; Kohl, T.; Steger, H.; Zorn, R.
2012. Geothermal : reliable, renewable, global ; GRC 2012 annual meeting, Reno, NV, September 30 - October 3, 2012, 1101–1105, Curran
2011
Geothermal engineering integrating mitigation of induced seismicity in reservoirs‐The European GEISER Project
Bruhn, D.; Huenges, E.; Ágústsson, K.; Zang, A.; Kwiatek, G.; Rachez, X.; Wiemer, S.; Van Wees, J.; Calcagno, P.; Kohl, T.; Dorbath, C.; De Natale, G.; Oye, V.
2011. Geothermal Resources Council Annual Meeting, San Diego, CA, October 23-26, 2011, 1623–1626, Curran
2007
Predictive modeling of reservoir response to hydraulic stimulations at the European EGS site Soultz-sous-Forêts
Kohl, T.; Mégel, T.
2007. International Journal of Rock Mechanics and Mining Sciences, 44 (8), 1118–1131. doi:10.1016/j.ijrmms.2007.07.022
Numerical evaluation of thermal response tests
Signorelli, S.; Bassetti, S.; Pahud, D.; Kohl, T.
2007. Geothermics, 36 (2), 141–166. doi:10.1016/j.geothermics.2006.10.006
Enhanced Geothermal Innovative Network for Europe: the state-of-the-art
Ledru, P.; Bruhn, D.; Calcagno, P.; Genter, A.; Huenges, E.; Kaltschmitt, M.; Karytsas, C.; Kohl, T.; Le Bel, L.; Lokhorst, A.; Manzella, A.; Thorhalsson, S.
2007. Renewable Baseload Energy: Geothermal Heat Pumps to Engineered Reservoirs, 295–300, Geothermal Resources Council (GRC)
Three-dimensional distribution and evolution of permafrost temperatures in idealized high-mountain topography
Noetzli, J.; Gruber, S.; Kohl, T.; Salzmann, N.; Haeberli, W.
2007. Journal of geophysical research, 112 (F2), Article no: F02S13. doi:10.1029/2006JF000545
2006
The potential of the use of dense fluids for initiating hydraulic stimulation
Mégel, T.; Kohl, T.; Hopkirk, R. J.
2006. Geothermics, 35 (5-6), 589–599. doi:10.1016/j.geothermics.2006.11.003
The deep EGS (Enhanced Geothermal System) project at Soultz-sous-Forêts (Alsace, France)
Gérard, A.; Genter, A.; Kohl, T.; Lutz, P.; Rose, P.; Rummel, F.
2006. Geothermics, 35 (5-6), 473–483. doi:10.1016/j.geothermics.2006.12.001
2005
Development of a regional geothermal resource atlas
Kohl, T.; Signorelli, S.; Engelhardt, I.; Andenmatten Berthoud, N.; Sellami, S.; Rybach, L.
2005. Journal of geophysics and engineering, 2 (4), 372–385. doi:10.1088/1742-2132/2/4/S11
Coupled thermal-hydraulic-chemical modelling of enhanced geothermal systems
Bächler, D.; Kohl, T.
2005. Geophysical journal international, 161 (2), 533–548. doi:10.1111/j.1365-246X.2005.02497.x
Analysis of Geothermal Resources in Northern Switzerland
Kohl, T.; Engelhardt, I.; Signorelli, S.
2005. Geothermal Energy - The World’s Buried Treasure, 269–272, Geothermal Resources Council (GRC)
2004
Interpretation of geothermal profiles perturbed by topography: the alpine permafrost boreholes at Stockhorn Plateau, Switzerland
Gruber, S.; King, L.; Kohl, T.; Herz, T.; Haeberli, W.; Hoelzle, M.
2004. Permafrost and periglacial processes, 15 (4), 349–357. doi:10.1002/ppp.503
Regional ground surface temperature mapping from meteorological data
Signorelli, S.; Kohl, T.
2004. Global and planetary change, 40 (3-4), 267–284. doi:10.1016/j.gloplacha.2003.08.003
Waste heat problems and solutions in geothermal energy
Rybach, L.; Kohl, T.
2004. Geological Society, London, Special Publications, 236 (1), 369–380. doi:10.1144/GSL.SP.2004.236.01.21
Numerical evaluation of massive stimulation experiments
Kohl, T.; Mégel, T.; Baria, R.
2004. Transactions, 28, 295–298
2003
Water solubility and diffusivity in olivine: its role in planetary tectonics
Regenauer-Lieb, K.; Kohl, T.
2003. Mineralogical magazine, 67 (4), 697–715. doi:10.1180/0026461036740128
Geochemical modelling of the Soultz-sous-Forêts Hot Fractured Rock system
Rabemanana, V.; Durst, P.; Bächler, D.; Vuataz, F.-D.; Kohl, T.
2003. Geothermics, 32 (4-6), 645–653. doi:10.1016/S0375-6505(03)00069-5
Geothermal resource mapping : example from northern Switzerland
Kohl, T.; Andenmatten, N.; Rybach, L.
2003. Geothermics, 32 (4-6), 721–732. doi:10.1016/S0375-6505(03)00066-X
Impact of graben-parallel faults on hydrothermal convection : Rhine Graben case study
Bächler, D.; Kohl, T.; Rybach, L.
2003. Physics and chemistry of the earth, 28 (9-11), 431–441. doi:10.1016/S1474-7065(03)00063-9
2002
System performance of a deep borehole heat exchanger
Kohl, T.; Brenni, R.; Eugster, W.
2002. Geothermics, 31 (6), 687–708. doi:10.1016/S0375-6505(02)00031-7
2001
Three-dimensional (3-D) thermal investigation below high Alpine topography
Kohl, T.; Signorelli, S.; Rybach, L.
2001. Physics of the earth and planetary interiors, 126 (3-4), 195–210. doi:10.1016/S0031-9201(01)00255-2
Hydraulisch-Geothermale Modellierung des Koralmtunnels
Graf, F.; Kohl, T.; Mégel, T.; Rybach, L.; Fuchs, R.
2001. Felsbau, 19 (6), 54–59
2000
Ground surface-temperature reconstruction based on data from a deep borehole in permafrost at Janssonhaugen, Svalbard
Isaksen, K.; Mühll, D. V.; Gubler, H.; Kohl, T.; Sollid, J. L.
2000. Annals of Glaciology, 31, 287–294. doi:10.3189/172756400781820291
1999
Transient thermal effects below complex topographies
Kohl, T.
1999. Tectonophysics, 306 (3-4), 311–324. doi:10.1016/S0040-1951(99)00063-3
1997
The thermal regime of the crystalline continental crust: Implications from the KTB
Clauser, C.; Giese, P.; Huenges, E.; Kohl, T.; Lehmann, H.; Rybach, L.; Šafanda, J.; Wilhelm, H.; Windloff, K.; Zoth, G.
1997. Journal of Geophysical Research: Solid Earth, 102 (B8), 18417–18441. doi:10.1029/96JB03443
Observation and simulation of non-Darcian flow transients in fractured rock
Kohl, T.; Evans, K. F.; Hopkirk, R. J.; Jung, R.; Rybach, L.
1997. Water resources research, 33 (3), 407–418. doi:10.1029/96WR03495
1996
Thermal and hydraulic aspects of the KTB drill site
Kohl, T.; Rybach, L.
1996. Geophysical journal international, 124 (3), 756–772. doi:10.1111/j.1365-246X.1996.tb05636.x
1995
“FRACure” : A simulation code for forced fluid flow and transport in fractured, porous rock
Kohl, T.; Hopkirk, R. J.
1995. Geothermics, 24 (3), 333–343. doi:10.1016/0375-6505(95)00012-F
Coupled hydraulic, thermal and mechanical considerations for the simulation of hot dry rock reservoirs
Kohl, T.; Evansi, K. F.; Hopkirk, R. J.; Rybach, L.
1995. Geothermics, 24 (3), 345–359. doi:10.1016/0375-6505(95)00013-G
Modelling of a european prototype hdr reservoir
Jupe, A. J.; Bruel, D.; Hicks, T.; Hopkirk, R.; Kappelmeyer, O.; Kohl, T.; Kolditz, O.; Rodrigues, N.; Smolka, K.; Willis-Richards, J.; Wallroth, T.; Xu, S.
1995. Geothermics, 24 (3), 403–419. doi:10.1016/0375-6505(95)00017-K
1994
Numerical simulation of radon transport from subsurface to buildings
Kohl, T.; Medici, F.; Rybach, L.
1994. Journal of applied geophysics, 31 (1-4), 145–152. doi:10.1016/0926-9851(94)90053-1
1992
The Effects of Fracture Normal Compliance on the Long Term Circulation Behavior of a Hot Dry Rock Reservoir: A Parameter Study Using the New Fully-Coupled Code’FRACTure’
Evans, K. F.; Kohl, T.; Rybach, L.; Hopkirk, R. J.
1992. Annual Meeting of the Geothermal Resources Council, San Diego, CA, October 4-7, 1992, 449–456, Geothermal Resources Council (GRC)

Book chapters


2018
Geothermal energy and a future earth
Rybach, L.; Kohl, T.
2018. Global change and future earth : The geoscience perspective. Ed.: T. Beer, 364–376, Cambridge University Press (CUP)
2017
Geoenergy Modeling III : Enhanced Geothermal Systems
Watanabe, N.; Blöcher, G.; Cacace, M.; Held, S.; Kohl, T.
2017. Springer International Publishing. doi:10.1007/978-3-319-46581-4
2016
Case Study: Soultz-sous-Forêts
Held, S.; Kohl, T.
2016. Geoenergy Modeling III : Enhanced Geothermal Systems. Ed.: N. Watanabe, 75–93, Springer International Publishing
2010
Geothermal Reservoir Simulation
Kolditz, O.; Blöcher, M. G.; Clauser, C.; Diersch, H.-J. G.; Kohl, T.; Kühn, M.; McDermott, C. I.; Wang, W.; Watanabe, N.; Zimmermann, G.; Bruel, D.
2010. Geothermal Energy Systems : Exploration, Development, and Utilization. Ed.: E. Huenges, 245–301, Wiley-VCH Verlag. doi:10.1002/9783527630479.ch5
1995
The salt heat tracer experiment
Kohl, T.; Marschall, P.; Rybach, L.
1995. Developments in Hydrotesting, Fluid Logging and Combined Salt/Heat Tracer Experimentsin the BK Site (Phase III) : Grimsel Test Site. Ed.: P. Marschall, Nationale Genossenschaft für die Lagerung Radioaktiver Abfälle (NAGRA)
1993
FRACTure : A new tool to simulate coupled processes in geosciences
Kohl, T.; Hopkirk, R. J.; Evans, K. F.; Rybach, L.
1993. Finite Elements in Fluids. Ed.: K. Morgan, 949–958, Pineridge Press