Numerical modeling of temperature-reporting nanoparticle tracer for fractured geothermal reservoir characterization
Yan, G.; 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 

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 

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 

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

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

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 

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 

Herausforderungen und Chancen für die Lithiumgewinnung aus geothermalen Systemen in Deutschland – Teil 2: Potenziale und Produktionsszenarien in Deutschland
Goldberg, V.; Nitschke, F.; Kluge, T.
2022. Grundwasser, 27, 261–275. doi:10.1007/s00767-022-00523-4 

Herausforderungen und Chancen für die Lithiumgewinnung aus geothermalen Systemen in Deutschland – Teil 1: Literaturvergleich bestehender Extraktionstechnologien
Goldberg, V.; Kluge, T.; Nitschke, F.
2022. Grundwasser, 27, 239–259. doi:10.1007/s00767-022-00522-5 

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 

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

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 

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

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 

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

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 

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

Formation of alternating layered Ba-Sr-sulfate and Pb-sulfide scaling in the geothermal plant of Soultz-sous-Forêts
Nitschke, F.; Scheiber, J.; Kramar, U.; Neumann, T.
2014. Neues Jahrbuch für Mineralogie / Abhandlungen, 191 (2), 145–156. doi:10.1127/0077-7757/2014/0253

Simulation of Temperature-Reporting Nanoparticle Tracers for Fractured Geothermal Reservoirs Characterization
Yan, G.; Andersen, P. Ø.; Qiao, Y.; Hatzignatiou, D. G.; Nitschke, F.; Spitzmüller, L.; Kohl, T.
2024. 85th EAGE Annual Conference & Exhibition (including the Workshop Programme), Oslo, 10th-13th June 2024, 1–5, European Association of Geoscientists and Engineers (EAGE). doi:10.3997/2214-4609.202410850

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

Lithium extraction from geothermal systems in Germany – challenges and opportunities for a local raw material supply
Goldberg, V.; Nitschke, F.; Kluge, T.; Egert, R.; Kohl, T.
2023, Dezember 5. LithiumDays (2023), Halle, Deutschland, 4.–6. Dezember 2023

Forschungsprojekt MALEG: Maschinelles Lernen zur Verbesserung der geothermischen Energieerzeugung
Eichinger, F.; Amtmann, J.; Koschikowski, J.; Winter, D.; Nitschke, F.; Trumpp, M.; Yström, L.; Lutz, R.; Seifert, V.
2023, November 23. Geothermie Symposium (2023), Geinberg, Österreich, 22.–24. November 2023

MALEG – Machine Learning for Enhancing Geothermal Energy
Yström, L.; Trumpp, M.; Goldberg, V.; Eichinger, F.; Amtmann, J.; Winter, D.; Koschikowski, J.; Kohl, T.; Nitschke, F.
2023, November 9. European Geothermal Workshop (EGW 2023), Utrecht, Niederlande, 8.–9. November 2023 

Invited Session Keynote: Lithiumresources
Goldberg, V.; Nitschke, F.; Kluge, T.; Egert, R.; Kohl, T.
2023, September 6. GeoBerlin (2023), Berlin, Deutschland, 3.–7. September 2023

Deep learning and geochemical modelling as tools for solute geothermometry
Ystroem, L. H.; Vollmer, M.; Nitschke, F.; Kohl, T.
2023. European Geothermal Congress 2022. Proceedings, European Geothermal Energy Council (EGEC) 

Geochemical Constraints on the Operations of High Temperature Aquifer Energy Storage (HT-ATES) in Abandoned Oil Reservoirs
Nitschke, F.; Ystroem, L.; Bauer, F.; Kohl, T.
2023. 48th Workshop on Geothermal Reservoir Engineering, Standfort University

Solute Geothermometry - Applications and Development
Ystroem, L. H.; Vollmer, M.; Nitschke, F.; Kohl, T.
2023, Januar 13. Webinar: "Focus on Geothermal (Webinar) : Energy for the Weekend" (2023), Online, 13. Januar 2023 

Nanoparticle-based tracing techniques in geothermal reservoir: Advances, challenges and prospects
Spitzmüller, L.; Nitschke, F.; Berson, J.; Maercks, A.; Rudolph, B.; Schimmel, T.; Kohl, T.
2023. PROCEEDINGS, 48th Workshop on Geothermal Reservoir Engineering 

Nanoparticle-based tracing techniques in geothermal reservoir: Advances, challenges and prospects
Spitzmüller, L.; Nitschke, F.; Maercks, A.; Berson, J.; Rudolph, B.; Schimmel, T.; Kohl, T.
2023. 48th Stanford Geothermal Workshop (2023), Stanford, CA, USA, 6.–8. Februar 2023

VESTA - Very-High-Temperature Heat Aquifer Storage
Kohl, T.; Schill, E.; Bremer, J.; Nitschke, F.; Kölbl, T.; Blöcher, G.; Hahn, F.; Klein, S.; Jahrfeld, T.; Meier, P.; El-Alfy, A.; Atkinson, T. A.; McLing, T.; Dobson, P.; Zhang, Y.; Rutquist, J.
2022, Oktober 17. European Geothermal Congress (EGC 2013), Pisa, Italien, 3.–7. Juni 2013 

Nanoparticle Tracer Development for Subsurface Reservoir Exploration
Spitzmüller, L.; Nitschke, F.; Berson, J.; Rudolph, B.; Schimmel, T.; Kohl, T.
2022. Symposium Nano-BW (2022), Bad Herrenalb, Deutschland, 5.–7. Dezember 2022

Entwicklung einer Aufbereitungsstrategie zur kombinierten Rohstoff- und Frischwassergewinnung aus geothermalen Fluiden
Goldberg, V.; Winter, D.; Nitschke, F.; Morata, D.; Koschikowski, J.; Kohl, T.
2021, Dezember 1. Der Geothermiekongress (DGK 2021), Essen, Deutschland, 30. November–2. Dezember 2021

Reservoirtemperaturbestimmung mittels künstlicher neuronaler Netze (KNN)
Ystroem, L.; Vollmer, M.; Nitschke, F.; Kohl, T.
2021, November 30. Der Geothermiekongress (DGK 2021), Essen, Deutschland, 30. November–2. Dezember 2021 

Development of a fluid treatment strategy to enable combined raw material and freshwater recovery from geothermal fluids
Goldberg, V.; Winter, D.; Nitschke, F.; Morata, D.; Koschikowski, J.; Kohl, T.
2021, September 20. GeoKarlsruhe (DGGV 2021), Karlsruhe, Deutschland, 19.–24. September 2021

Development of a brine treatment strategy for enhancing geothermal energy production and associated raw material extraction
Goldberg, V.; Winter, D.; Nitschke, F.; Morata, D.; Koschikowski, J.; Kohl, T.
2021, Juli 9. Goldschmidt (2021), Online, 4.–9. Juli 2021

An Integrated Sensitivity Analysis for Multicomponent Geothermometer for High Temperature Settings
Ystroem, L. H.; Nitschke, F.; Kohl, T.
2021, Mai 12. World Geothermal Congress (WGC 2021), Reykjavík, Island, 21.–26. Mai 2021 

Numerische und experimentelle Untersuchungen der Hydraulik auf gescherten rauen Klüften bei hohen Geothermie-typischen Fließraten
Nitschke, F.; Egert, R.; Marchand, S.; Kohl, T.
2020, November 13. Der digital Geothermiekongress (DGK 2020), Essen, Deutschland, 9.–13. November 2020

Nachhaltige Rohstoffgewinnung aus Thermalwässern: das BrineMine Projekt
Goldberg, V.; Held, S.; Winter, D.; Spitzmüller, L.; Nitschke, F.; Morata, D.; Kohl, T.; Budach, I.; Koschikowski, J.
2020, November 12. Der digital Geothermiekongress (DGK 2020), Essen, Deutschland, 9.–13. November 2020

Zeitliche und tiefenabhängige Effekte auf die Fluidchemie - Untersuchung granitischer Reservoire im Oberrheingraben mittels Multikomponentengeothermometrie
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2020, November 11. Der digital Geothermiekongress (DGK 2020), Essen, Deutschland, 9.–13. November 2020 

Statistische Evaluierung von nichtlinearen Effekten auf rauen und gescherten Kluftoberflächen
Egert, R.; Nitschke, F.; Gholami Korzani, M.; Kohl, T.
2020, November 11. Der digital Geothermiekongress (DGK 2020), Essen, Deutschland, 9.–13. November 2020

MulT_predict - An optimised multicomponent geothermometer
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2020, November 4. Student Technical Congress - German Section (STC 2020), Online, 4.–6. November 2020 

Flow regime in self-affine fractures inferred from field observations and statistical analysis
Kohl, T.; Egert, R.; Nitschke, F.
2020, Oktober 27. GSA 2020 Connects Online (2020), Online, 26.–30. Oktober 2020. doi:10.1130/abs/2020AM-358827

Stochastic evaluation of the flow regime on rough and sheared fractures
Egert, R.; Nitschke, F.; Gholami Korzani, M.; Kohl, T.
2020, Oktober 7. 8th European Geothermal Workshop (EGW 2020), Online, 7.–8. Oktober 2020

A Fully-Coupled Implicit Transient Two-Phase Wellbore Simulator
Nitschke, F.; Gholami Korzani, M.; Held, S.; Kohl, T.
2020. World Geothermal Congress 2020 

An Integrated Sensitivity Analysis for the Basalt Specific Multicomponent Geothermometer for High Temperature Settings
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2020. World Geothermal Congress 2020 

MulT_predict - Entwicklung & Validierung eines Tools zur Reservoirtemperaturabschätzung basierend auf Multikomponentengeothermometrie
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2019, November 21. Der Geothermiekongress (DGK 2019), München, Deutschland, 19.–21. November 2019 

The Development of a Fully Coupled Wellbore-Reservoir Simulator for Geothermal Application
Gholami Korzani, M.; Held, S.; Nitschke, F.; Kohl, T.
2019, November. 1st DEEPEGS-Symposium “How to enhance deep geothermal well productivity?” (2019), Orléans, Frankreich, 6.–7. November 2019

MulT_predict - A multicomponent geothermometer with integrated sensitivity analyses
Ystroem, L. H.; Nitschke, F.; Held, S.; Kohl, T.
2019, Oktober 9. 7th European Geothermal Workshop (EGW 2019), Karlsruhe, Deutschland, 9.–10. Oktober 2019 

Fully Transient Geothermal Wellbore Simulator (MOSKITO)
Gholami Korzani, M.; Held, S.; Nitschke, F.; Kohl, T.
2019, Oktober. 7th European Geothermal Workshop (EGW 2019), Karlsruhe, Deutschland, 9.–10. Oktober 2019

Estimating the Static Formation Temperature Using the Drilling and Logging Data of the RN-15/IDDP-2 Well in Iceland [in press]
Wang, J.; Nitschke, F.; Gaucher, E.; Kohl, T.
2019. DEEPEGS Symposium: How to enhance deep geothermal well productivity? - Orléans, France, 6-7 November 2019

Numerical quantification of Scaling Processes in Boreholes -Case study: Well Groß Buchholz Gt1 (GeneSys-Project)
Nitschke, F.; Held, S.; Gholami Korzani, M.; Wang, J.; Himmelsbach, T.; Kohl, T.
2018, November 27. Der Geothermiekongress (DGK 2018), Essen, Deutschland, 27.–29. November 2018

Calculation of CO2 solubility in thermal waters in the context of geothermal utilization
Goldberg, V.; Held, S.; Nitschke, F.; Siefert, D.; Kölbel, T.; Kohl, T.
2018, November. Student Technical Conference (STC 2018), Freiberg, Deutschland, 8.–9. November 2018

Hydraulic anisotropy in simulated sheared fractures: a statistical analysis with comparison of aperture determination methods
Marchand, S.; Selzer, M.; Mersch, O.; Schoenball, M.; Nitschke, F.; Schmittbuhl, J.; Nestler, B.; Gaucher, E.; Kohl, T.
2018. European Geosciences Union General Assembly (EGU 2018), Wien, Österreich, 8.–13. April 2018

Advances in geochemical exploration - From dilution determination to improvements of geothermometers;
Held, S.; Nitschke, F.; Schneider, J.; Kohl, T.
2017, September 13. Der Geothermiekongress (DGK 2017), München, Deutschland, 12.–14. September 2017

Advanced geochemical techniques to characterize geothermal fluid circulation patterns
Held, S.; Nitschke, F.; Schill, E.; Kohl, T.; Neumann, T.
2017, August 15. Goldschmidt Conference (2017), Paris, Frankreich, 13.–18. August 2017

In-situ Temperature Determination at the Villarrica Geothermal System, Southern Chile : Implications from Laboratory Experiments for Geothermometry
Nitschke, F.; Held, S.; Villalon, I.; Neumann, T.; Kohl, T.
2017. 42nd Workshop on Geothermal Reservoir Engineering 2017 : Stanford, California, USA, 13-15 February 2017, 1–8, Red Hook

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

In-situ Temperature Determination at the Villarrica Geothermal System, Southern Chile : Implications from Laboratory Experiments for Geothermometry
Nitschke, F.; Held, S.; Villalon, I.; Neumann, T.; Kohl, T.
2017. 42nd Workshop on Geothermal Reservoir Engineering (2017), San José, CA, USA, 13.–15. Februar 2017

Hydrochemistry and genesis of the hot spring fluids of Villarrica Geothermal system in the Andes of Southern Chile
Held, S.; Nitschke, F.; Schill, E.; Eiche, E.; Morata, D.; Kohl, T.
2017. 41st Geothermal Research Council Annual Meeting (GRC) & GEA GeoExpo+ 2017, Salt Lake City, Utah, USA, 1st - 4th October 2017

Geochemical Reservoir Exploration and Temperature Determination at the Mt. Villarrica Geothermal System, Chile
Nitschke, F.; Held, S.; Villalon, I.; Mundhenk, N.; Kohl, T.; Neumann, T.
2016. European Geothermal Congress (EGC 2016), Straßburg, Frankreich, 19.–26. September 2016

Lithological controls influencing the geochemistry of geothermal systems in the vicinity of Villarrica volcano : an experimental approach
Villalon, I.; Nitschke, F.; Held, S.; Morata, D.
2015. XIV Chilean Geological Congress, Chile 2015, La Serena, Chile, 4th - 8th October 2015

The application of THC Code TOUGHREACT-Pitzer on Failure Conditions of Geothermal project GeneSys
Nitschke, F.; Held, S.; Himmelsbach, T.; Kohl, T.
2015. 4th European Geothermal Workshop (EGW 2015), Straßburg, Frankreich, 19.–20. Oktober 2015

Reactivity of Chilean Reservoir Rocks and the Use of Geochemical Tools for Reservoir Characterization
Nitschke, F.; Held, S.; Mundhenk, N.; Villalon, I.; Kohl, T.; Neumann, T.
2015. 4th European Geothermal Workshop (EGW 2015), Straßburg, Frankreich, 19.–20. Oktober 2015

Formation Mechanisms of Sulfate and Sulfide Scalings in the Geothermal Power Plant of Soultz-sous-Forêts : Insights from Sulfur Isotope Analyses
Nitschke, F.; Scheiber, J.; Neumann, T.; Kramar, U.
2013. Joint Annual Meeting DMG and GV : Sediment. Geofluids: Lubricants of the Dynamic Earth, Tübingen, Germany, 16th - 20th September 2013