Articles

Mechanical test of granite with multiple water–thermal cycles

To study the influence of thermal shock caused by water-cooling on the physical and mechanical properties of high-temperature granite, granite was subjected to an increasing number of high-temperature (300 °C)...

Authors: Li Yu, Hai-Wang Peng, Yu Zhang and Guo-wei Li

GaS_GeoT: A computer program for an effective use of newly improved gas geothermometers in predicting reliable geothermal reservoir temperatures

A geochemometric study based on a multi-criteria decision analysis was applied, for the first time, for the optimal evaluation and selection of artificial neural networks, and the prediction of geothermal rese...

Authors: A. Acevedo-Anicasio, E. Santoyo, D. Pérez-Zárate, Kailasa Pandarinath, M. Guevara and L. Díaz-González

A new method for correcting temperature log profiles in low-enthalpy plays

Temperature logs recorded shortly after drilling operations can be the only temperature information from deep wells. However, these measurements are still influenced by the thermal disturbance caused by drilli...

Authors: Sandra Schumacher and Inga Moeck

Hydrochemical and operational parameters driving carbonate scale kinetics at geothermal facilities in the Bavarian Molasse Basin

The majority of scales observed at geothermal facilities exploring the Malm Aquifer in the Bavarian Molasse Basin are carbonates. They form due to a disruption of the lime–carbonic acid equilibrium during prod...

Authors: Bernhard Köhl, Martin Elsner and Thomas Baumann

An open-access stress magnitude database for Germany and adjacent regions

Knowledge of the crustal stress state is important for the assessment of subsurface stability. In particular, stress magnitudes are essential for the calibration of geomechanical models that estimate a continu...

Authors: Sophia Morawietz, Oliver Heidbach, Karsten Reiter, Moritz Ziegler, Mojtaba Rajabi, Günter Zimmermann, Birgit Müller and Mark Tingay

Water–rock interactions in the Bruchsal geothermal system by U–Th series radionuclides

Uranium and thorium decay series disequilibria in deep geothermal brines are a result of water–rock interaction processes. The migratory behavior of radionuclides provides valuable site-specific information an...

Authors: Lena Kölbel, Thomas Kölbel, Ulrich Maier, Martin Sauter, Thorsten Schäfer and Bettina Wiegand

Rippled scales in a geothermal facility in the Bavarian Molasse Basin: a key to understand the calcite scaling process

Mineral precipitates, scales, are wide-spread in geothermal facilities and hamper technical and economic efficiency. Scales reported from earlier studies in the Bavarian Molasse Basin consisted mostly of calci...

Authors: Bernhard Köhl, James Grundy and Thomas Baumann

Classification of geothermal systems in Madagascar

Classification schemes for geothermal energy sources have recently been improved to include the concept of geothermal play. Our comprehensive review for the island of Madagascar aims to enhance the understandi...

Authors: M. Rajaobelison, J. Raymond, M. Malo and C. Dezayes

Hydrogen sulfide removal from geothermal fluids by Fe(III)-based additives

A new method to remove hydrogen sulfide from geothermal fluids during well operation was tested in situ at a geothermal site in Vienna (Austria). For this purpose, ferric iron was added either as granulated ir...

Authors: S. Regenspurg, J. Iannotta, E. Feldbusch, F. J. Zimmermann and F. Eichinger

Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep geothermal well

The North Alpine Foreland Basin in SE Germany is Germany’s most active deep geothermal province. However, in its southern and eastern part the basin is considerably overpressured, which is a significant challe...

Authors: Michael C. Drews, Peter Hofstetter, Kai Zosseder, Vladimir Shipilin and Harald Stollhofen

The potential of coupled carbon storage and geothermal extraction in a CO₂-enhanced geothermal system: a review

The increasing demand for energy makes it difficult to replace fossil fuels with low-carbon energy sources in the short term, and the large amount of CO₂ emitted by fossil fuel combustion increases global warming...

Authors: Yu Wu and Pan Li

An efficient hybrid model for thermal analysis of deep borehole heat exchangers

The deep borehole heat exchanger (DBHE) shows great potential in seasonal thermal energy storage and its high performance efficiency with smaller land occupancy attracts increasing attention as a promising geo...

Authors: Yazhou Zhao, Zhonghe Pang, Yonghui Huang and Zhibo Ma

Solute tracer test quantification of the effects of hot water injection into hydraulically stimulated crystalline rock

When water is injected into a fracture-dominated reservoir that is cooler or hotter than the injected water, the reservoir permeability is expected to be altered by the injection-induced thermo-mechanical effe...

Authors: Anniina Kittilä, Mohammadreza Jalali, Martin O. Saar and Xiang-Zhao Kong

The influence of thermal treatment on rock–bit interaction: a study of a combined thermo–mechanical drilling (CTMD) concept

To improve the economics and viability of accessing deep georesources, we propose a combined thermo–mechanical drilling (CTMD) method, employing a heat source to facilitate the mechanical removal of rock, with...

Authors: Edoardo Rossi, Martin O. Saar and Philipp Rudolf von Rohr

From exploration to operation: research developments in deep geothermal energy

Authors: Alexandra R. L. Kushnir and Markus Loewer

Physical property evolution of granite during experimental chemical stimulation

The Soultz-sous-Forêts geothermal reservoir (France)—in particular, the GPK-4 well—has been proposed as a target for chemical stimulation under the DESTRESS Horizon-2020 framework. With a combination of batch ...

Authors: Jamie I. Farquharson, Alexandra R. L. Kushnir, Bastien Wild and Patrick Baud

THM modeling of gravity anomalies related to deep hydrothermal circulation at Soultz-sous-Forêts (France)

Gravity measurements in the Upper Rhine Graben evidence spatial variations at the regional scale and close to the geothermal sites. They are classically interpreted as linked to the geology. We aim to bring ne...

Authors: Bérénice Vallier, Vincent Magnenet, Jean Schmittbuhl and Christophe Fond

Porosity–permeability relationship derived from Upper Jurassic carbonate rock cores to assess the regional hydraulic matrix properties of the Malm reservoir in the South German Molasse Basin

For the successful realization and productivity prediction of new hydrothermal projects in the South German Molasse Basin, the hydraulic matrix properties of the Upper Jurassic Malm reservoir have to be determ...

Authors: D. Bohnsack, M. Potten, D. Pfrang, P. Wolpert and K. Zosseder

The 3D stress state from geomechanical–numerical modelling and its uncertainties: a case study in the Bavarian Molasse Basin

Knowledge of the undisturbed stress state is a key parameter for borehole stability, productivity and induced seismicity hazard assessment. Due to the sparse and incomplete availability of data records, 3D geo...

Authors: Moritz O. Ziegler and Oliver Heidbach

Reconstruction of geothermal boreholes in Poland

The beginnings of geothermal implementation research in Poland date back to 1989–1993 when the Mineral and Energy Economy Research Institute of the Polish Academy of Sciences (MEERI PAS) launched the first geo...

Authors: Wiesław Bujakowski, Bogusław Bielec, Maciej Miecznik and Leszek Pająk

Laboratory tests simulating corrosion in geothermal power plants: influence of service conditions

One of the main challenges associated with the operation and maintenance of binary geothermal power plants is the degradation of construction materials. In this sense, it is crucial to apply appropriate preven...

Authors: Ana Vallejo Vitaller, Ueli M. Angst and Bernhard Elsener

Retraction Note to: Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep geothermal well

The authors have retracted this article (Drews et al. 2019) because some data have been used without the appropriate permissions. Additionally, the funding statement is not complete and the authorship is incor...

Authors: Michael C. Drews, Peter Hofstetter, Kai Zosseder, Robert Straubinger, Andreas Gahr and Harald Stollhofen

Crystallization of calcium carbonate in a large-scale push–pull heat storage test in the Upper Jurassic carbonate aquifer

Crystallization of carbonates is a key process affecting the operation of geothermal facilities and aquifer heat storage systems. The crystals formed in an aquifer heat storage test in the Upper Jurassic carbo...

Authors: Martina Ueckert, Carina Wismeth and Thomas Baumann

Optimization of the utilization of deep borehole heat exchangers

Deep-borehole heat exchangers (DBHE) are generally coaxial pipes installed in deep boreholes and has become an alternative approach to utilize geothermal energy. Since the performance of the DBHE system can be...

Authors: Sheng Pan, Yanlong Kong, Chaofan Chen, Zhonghe Pang and Jiyang Wang

Seismicity induced during the development of the Rittershoffen geothermal field, France

The development of the Rittershoffen deep geothermal field (Alsace, Upper Rhine Graben) between 2012 and 2014 induced unfelt seismicity with a local magnitude of less than 1.6. This seismicity occurred during ...

Authors: Vincent Maurer, Emmanuel Gaucher, Marc Grunberg, Rike Koepke, Romain Pestourie and Nicolas Cuenot

Thermophysical properties of surficial rocks: a tool to characterize geothermal resources of remote northern regions

The energetic framework of Canadian remote communities relies on fossil fuels. This has adverse environmental and energy security issues. In order to offset diesel consumption, the search for local, sustainabl...

Authors: M. M. Miranda, N. Giordano, J. Raymond, A. J. S. C. Pereira and C. Dezayes

Geothermal resource assessment of remote sedimentary basins with sparse data: lessons learned from Anticosti Island, Canada

Anticosti Island is located in the Anticosti sedimentary basin, an Ordovician/Silurian carbonate platform. This platform is mainly composed of limestone and shale with some dolomite and sandstone and reaches u...

Authors: Violaine Gascuel, Karine Bédard, Félix-Antoine Comeau, Jasmin Raymond and Michel Malo

A multicomponent geothermometer for high-temperature basalt settings

For successful geothermal reservoir exploration, accurate temperature estimation is essential. Since reservoir temperature estimation frequently involves high uncertainties when using conventional solute geoth...

Authors: Lars H. Ystroem, Fabian Nitschke, Sebastian Held and Thomas Kohl

Temperature and pressure corrections applied to rock thermal conductivity: impact on subsurface temperature prognosis and heat-flow determination in geothermal exploration

Precise knowledge of the subsurface thermal field plays a key role in the assessment of geothermal targets. Unfortunately, deep underground temperature data is generally scarce and a matter of research. To ach...

Authors: Ben Norden, Andrea Förster, Hans-Jürgen Förster and Sven Fuchs

Heat flow density estimates in the Upper Rhine Graben using laboratory measurements of thermal conductivity on sedimentary rocks

The Upper Rhine Graben (URG) has been extensively studied for geothermal exploitation over the past decades. Yet, the thermal conductivity of the sedimentary cover is still poorly constrained, limiting our abi...

Authors: Pauline Harlé, Alexandra R. L. Kushnir, Coralie Aichholzer, Michael J. Heap, Régis Hehn, Vincent Maurer, Patrick Baud, Alexandre Richard, Albert Genter and Philippe Duringer

First field application of temperature sensor modules for groundwater flow detection near borehole heat exchanger

Here, we present the first application of a temperature sensor module (TSM) for deducing groundwater flow velocity and direction at borehole heat exchangers (BHEs). The TSM maps the horizontal temperature dist...

Authors: Alexander Michalski and Norbert Klitzsch

Investigation on geothermal binary-flashing cycle employing zeotropic mixtures as working fluids

The binary-flashing cycle (BFC) is supposed to be a promising technology for geothermal recovery due to the full use of geofluid. For further performance improvement, the potential of using mixtures of a hydro...

Authors: Lingbao Wang, Xianbiao Bu and Huashan Li

Analyzing the influence of correlation length in permeability on convective systems in heterogeneous aquifers using entropy production

Hydrothermal convection in porous geothermal reservoir systems can be seen as a double-edged sword. On the one hand, regions of upflow in convective systems can increase the geothermal energy potential of the ...

Authors: Jan Niederau, J. Florian Wellmann and Nele Börsing

Detailed descriptions of the lower-middle Triassic and Permian formations using cores and gamma-rays from the EPS-1 exploration geothermal borehole (Soultz-sous-Forêts, Upper Rhine Graben, France)

In the 1950s, a petroleum well in Soultz-sous-Forêts (no 4589; Upper Rhine Graben, France) reached the Lettenkohle (Triassic) at 830 m depth. During the exploration phase at Soultz-sous-Forêts, the first enhan...

Authors: C. Aichholzer, Ph. Duringer and A. Genter

On the geothermal potential of crustal fault zones: a case study from the Pontgibaud area (French Massif Central, France)

The present study aims to understand the potential of a new and novel type of geothermal play system for high temperature and electricity production: crustal fault zones (CFZ). According to geological and geop...

Authors: Hugo Duwiquet, Laurent Arbaret, Laurent Guillou-Frottier, Michael J. Heap and Mathieu Bellanger

Temperature log simulations in high-enthalpy boreholes

Temperature logs have important applications in the geothermal industry such as the estimation of the static formation temperature (SFT) and the characterization of fluid loss from a borehole. However, the tem...

Authors: Jia Wang, Fabian Nitschke, Maziar Gholami Korzani and Thomas Kohl

Casing failure identification of long-abandoned geothermal wells in Field Dieng, Indonesia

Integrity issues create challenges for maintaining the production of mature geothermal wells. Such problems are likely to occur in wells designed according to oil and gas standards, without considering the ext...

Authors: B. T. H. Marbun, R. H. Ridwan, S. Z. Sinaga, B. Pande and B. A. Purbantanu

Making use of geothermal brine in Indonesia: binary demonstration power plant Lahendong/Pangolombian

This paper describes a novel concept for integrating binary plants at a geothermal site which has been realized within a demonstration project in Indonesia. By using an intermediate hot water and an intermedia...

Authors: Stephanie Frick, Stefan Kranz, Gina Kupfermann, Ali Saadat and Ernst Huenges

A probabilistic geologic model of the Krafla geothermal system constrained by gravimetric data

The quantitative connections between subsurface geologic structure and measured geophysical data allow 3D geologic models to be tested against measurements and geophysical anomalies to be interpreted in terms ...

Authors: Samuel W. Scott, Cari Covell, Egill Júlíusson, Águst Valfells, Juliet Newson, Birgir Hrafnkelsson, Halldór Pálsson and María Gudjónsdóttir

Numerical modeling of the geothermal hydrology of the Volcanic Island of Basse-Terre, Guadeloupe

This study investigates the thermo-hydraulic implications of three geologic scenarios for characterizing the geothermal hydrology of Basse-Terre Island, Guadeloupe. Despite newly acquired magnetotelluric, petr...

Authors: Margaux Raguenel, Thomas Driesner and François Bonneau

Petrophysical properties of the Muschelkalk from the Soultz-sous-Forêts geothermal site (France), an important lithostratigraphic unit for geothermal exploitation in the Upper Rhine Graben

The Muschelkalk, composed of Triassic limestones, marls, dolomites, and evaporites, forms part of the Permo-Triassic cover of sedimentary rocks that directly overlies the fractured granitic reservoir used for ...

Authors: Michael J. Heap, Alexandra R. L. Kushnir, H. Albert Gilg, Marie E. S. Violay, Pauline Harlé and Patrick Baud

Evaluation of the geothermal potential of the western Snake River Plain based on a deep corehole on the Mountain Home AFB near Mountain Home, Idaho

A geothermal exploration corehole was drilled to a total depth of 1821.5 m on the Mountain Home Air Force Base near Mountain Home, Idaho. The corehole was used to collect an unusually large amount of data, inc...

Authors: Thomas E. Lachmar, Thomas G. Freeman, James A. Kessler, Joseph F. Batir, James P. Evans, Dennis L. Nielson, John W. Shervais, Xiwei Chen, Douglas R. Schmitt and David D. Blackwell

Hydraulic behavior of fault zones in pump tests of geothermal wells: a parametric analysis using numerical simulations for the Upper Jurassic aquifer of the North Alpine Foreland Basin

Fault zones in the Upper Jurassic aquifer of the North Alpine Foreland Basin are generally regions with possibly increased hydraulic properties. They are consequently often part of the geothermal exploration c...

Authors: Florian Konrad, Alexandros Savvatis, Florian Wellmann and Kai Zosseder

A fracture flow permeability and stress dependency simulation applied to multi-reservoirs, multi-production scenarios analysis

The use of the subsurface and the exploitation of subsurface resources require prior knowledge of fluid flow through fracture networks. For nuclear waste disposal, for the enhancement of hydrocarbon recovery f...

Authors: Baptiste Lepillier, Alexandros Daniilidis, Nima Doonechaly Gholizadeh, Pierre-Olivier Bruna, Juliane Kummerow and David Bruhn

Thermally driven fracture aperture variation in naturally fractured granites

Temperature variations often trigger coupled thermal, hydrological, mechanical, and chemical (THMC) processes that can significantly alter the permeability/impedance of fracture-dominated deep geological reser...

Authors: Marina Grimm Lima, Daniel Vogler, Lorenzo Querci, Claudio Madonna, Bodo Hattendorf, Martin O. Saar and Xiang-Zhao Kong

Kinetics of silica precipitation in geothermal brine with seeds addition: minimizing silica scaling in a cold re-injection system

The utilization of geothermal energy remains underdeveloped, mainly due to the technical problem of silica scaling. The scaling can eventually disrupt the electricity production process due to frequent pipe ma...

Authors: Felix Arie Setiawan, Edia Rahayuningsih, Himawan Tri Bayu Murti Petrus, Muhammad Istiawan Nurpratama and Indra Perdana

The development study of Karaha–Talaga Bodas geothermal field using numerical simulation

A numerical simulation study of the Karaha–Talaga Bodas geothermal field was carried out to assess the resource and to analyze and predict reservoir behavior under various development scenarios. The three-dime...

Authors: Sutopo, Welly Prabata and Heru Berian Pratama

Publisher Correction to: Geothermal Energy, volume 7

An error occurred during the publication of a number of articles in Geothermal Energy. Several articles were published in volume 7 with a duplicate citation number.

Authors:

A machine learning approach for mapping the very shallow theoretical geothermal potential

The very shallow geothermal potential (vSGP) is increasingly recognized as a viable resource for providing clean thermal energy in urban and rural areas. This is primarily due to its reliability, low-cost inst...

Authors: Dan Assouline, Nahid Mohajeri, Agust Gudmundsson and Jean-Louis Scartezzini

An assessment of technical and economic feasibility to install geothermal well systems across Ukraine

Although the resources of geothermal energy in Ukraine greatly exceed domestic conventional energy sources, using geothermal heat in the country is still far behind the existing opportunities. Addressing this ...

Authors: Dmytro Rudakov and Oleksandr Inkin