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Hydrological constraints on the potential of enhanced geothermal systems in the ductile crust Geotherm. Energy (IF 4.2) Pub Date : 2024-03-29 Samuel Scott, Alina Yapparova, Philipp Weis, Matthew Houde
Continental crust at temperatures > 400 °C and depths > 10–20 km normally deforms in a ductile manner, but can become brittle and permeable in response to changes in temperature or stress state induced by fluid injection. In this study, we quantify the theoretical power generation potential of an enhanced geothermal system (EGS) at 15–17 km depth using a numerical model considering the dynamic response
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Characterisation of the fracture- and karst-controlled geothermal reservoir below Munich from geophysical wireline and well information Geotherm. Energy (IF 4.2) Pub Date : 2024-03-27 J. F. Krumbholz, M. Krumbholz, S. H. Wadas, D. C. Tanner
The Upper Jurassic carbonate aquifer in the German Molasse Basin (S Germany) below Munich is the focus of exploitation of geothermal energy. To implement geothermal wells, meaningful prediction of reservoir quality (e.g., volume, temperature, location of aquifers, porosity, permeability) is required. However, permeability of this aquifer is often highly heterogeneous and anisotropic, as in other karst-
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Global sensitivity analysis and uncertainty quantification for design parameters of shallow geothermal systems Geotherm. Energy (IF 4.2) Pub Date : 2024-03-23 Simon Richter, Katrin Lubashevsky, Jakob Randow, Steve Henker, Jörg Buchwald, Anke Bucher
To improve the design process of geothermal systems, it is important to know which design parameters particularly affect the performance of the system. This article presents investigations on design parameters for borehole heat exchangers in the shallow subsurface. The study is based on numerical simulations with one double U-tube borehole heat exchanger and approximated models obtained using machine
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Gravimetric and morpho-structural analyses in the superhot geothermal system Los Humeros: an example from central Mexico Geotherm. Energy (IF 4.2) Pub Date : 2024-03-15 Natalia Cornejo-Triviño, Domenico Liotta, Luigi Piccardi, Andrea Brogi, Michal Kruszewski, M.A Perez-Flores, Jonathan Carrillo, Philippe Calcagno, Ingo Sass, Eva Schill
The influence of deep and regional geological structures is becoming increasingly important in superhot geothermal systems due to their proximity to the transition between brittleness and ductility. In the Los Humeros geothermal field in Mexico, where subsurface fluids reach temperatures of over 350 °C, the surface structures resulting from the collapse of calderas have so far only been interpreted
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Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric Geotherm. Energy (IF 4.2) Pub Date : 2024-02-15 Yi Yang, Jie Zhang, Xingchun Wang, Mingxing Liang, Dewei Li, Meng Liang, Yang Ou, Dingyu Jia, Xianchun Tang, Xufeng Li
In order to better understand the crustal shortening and orogenic uplift in the northeastern margin of the Tibetan Plateau, as well as the geothermal resource effects formed during this process, we used ModEM software to perform 3D MT imaging on broadband magnetotelluric survey points deployed at 710 points in the Gonghe Basin and its surrounding areas. The resistivity model suggests that the Gonghe
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3D mechanical analysis of geothermal reservoir operations in faulted sedimentary aquifers using MACRIS Geotherm. Energy (IF 4.2) Pub Date : 2024-02-12 Arjan Marelis, Fred Beekman, Jan-Diederik van Wees
Accurate and efficient predictions of three-dimensional subsurface stress changes are required for the assessment of geothermal operations with respect to fault stability and the potential risk for induced seismicity. This work extends the model capabilities of Mechanical Analysis of Complex Reservoirs for Induced Seismicity (MACRIS) to account for high-resolution thermo-elastic stress evaluations
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Risk of surface movements and reservoir deformation for high-temperature aquifer thermal energy storage (HT-ATES) Geotherm. Energy (IF 4.2) Pub Date : 2024-01-31 Kai Stricker, Robert Egert, Eva Schill, Thomas Kohl
High-temperature aquifer thermal energy storage (HT-ATES) systems are designed for seasonal storage of large amounts of thermal energy to meet the demand of industrial processes or district heating systems at high temperatures (> 100 °C). The resulting high injection temperatures or pressures induce thermo- and poroelastic stress changes around the injection well. This study estimates the impact of
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Calculation model and influence factors of thermal conductivity of composite cement-based materials for geothermal well Geotherm. Energy (IF 4.2) Pub Date : 2024-01-28 Yu Yang, Bo Li, Lulu Che, Menghua Li, Ye Luo, Hang Han
The use of cement-based composites (CBC) with high thermal conductivity for geothermal well cementing is extremely important for the efficient development and use of geothermal energy. Accurate prediction of thermal conductivity can save a lot of experimental costs and time. At present, there is no specific calculation model for the thermal conductivity of CBC. In this study, the microstructure, thermal
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City-scale heating and cooling with aquifer thermal energy storage (ATES) Geotherm. Energy (IF 4.2) Pub Date : 2024-01-18 Ruben Stemmle, Haegyeong Lee, Philipp Blum, Kathrin Menberg
Sustainable and climate-friendly space heating and cooling is of great importance for the energy transition. Compared to conventional energy sources, Aquifer Thermal Energy Storage (ATES) systems can significantly reduce greenhouse gas emissions from space heating and cooling. Hence, the objective of this study is to quantify the technical potential of shallow low-temperature ATES systems in terms
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Evaluating an enhanced thermal response test (ETRT) with high groundwater flow Geotherm. Energy (IF 4.2) Pub Date : 2024-01-03 Anna Albers, Hagen Steger, Roman Zorn, Philipp Blum
Enhanced thermal response tests (ETRT) enable the evaluation of depth-specific effective thermal conductivities. Groundwater flow can significantly influence the interpretation of ETRT results. Hence, this study aims to critically evaluate an ETRT with high groundwater flow (> 0.2 m d−1). Different approaches in determining the specific heat load of an ETRT are compared. The results show that assuming
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Geo-temperature response to reinjection in sandstone geothermal reservoirs Geotherm. Energy (IF 4.2) Pub Date : 2023-12-09 Jialong Li, Fengxin Kang, Tong Bai, Zhenhan Li, Qiang Zhao, Pingping Zhang, Tingting Zheng, Haibo Sui
To study the evolution rules and behaviors of heat transport in a sandstone geothermal reservoir caused by cooled water reinjection, this research focuses on the quantitative relationship among reinjection parameters and the thermal breakthrough time of production wells. The permeation, tracer, and reinjection tests were conducted in a simulation model using a large sand tank in conjunction with the
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Optimizing scenarios of a deep geothermal aquifer storage in the southern Upper Rhine Graben Geotherm. Energy (IF 4.2) Pub Date : 2023-12-02 Ingrid Stober, Martin Jägle, Thomas Kohl
Based on a newly developed geological 3D reservoir model for the demonstration site of the ‘Freiburger Bucht’ in the Upper Rhine Graben (SW Germany), geothermal development and realization concepts of an aquifer thermal energy storage (ATES) in the Buntsandstein aquifer were elaborated and energetically evaluated by numerical modeling. The thermal–hydraulic coupled modeling was performed with the FE-software
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Modeling and economic evaluation of deep geothermal heat supply systems using the example of the Wealden near Hannover, Germany Geotherm. Energy (IF 4.2) Pub Date : 2023-11-21 Pascal Schlagermann, Kurt M. Reinicke
Germany desires to become climate-neutral in its heat supply by 2045. From 2024 onward communities are legally required to develop a plan documenting how the objective will be achieved. Geothermal resources can be a major building block to reach the aspirational target if they can be developed at competitive costs. To evaluate the economic potential of geothermal resources is time and money consuming
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Reactivation of variably sealed joints and permeability enhancement in geothermal reservoir rocks Geotherm. Energy (IF 4.2) Pub Date : 2023-11-13 Alexandra R. L. Kushnir, Michael J. Heap, Patrick Baud, Thierry Reuschlé, Jean Schmittbuhl
Hydraulic stimulation of enhanced deep geothermal reservoirs commonly targets pre-existing joint networks with the goal of increasing reservoir permeability. Here, we study the permeability and strength of joint-free and jointed Buntsandstein sandstones from the EPS-1 exploratory borehole at the Soultz-sous-Forêts geothermal site (France). The studied jointed samples contain naturally formed fractures
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Study on permeability evolution and damage mechanism along the EGS fracture in heat mining stage under thermal stress/cracking Geotherm. Energy (IF 4.2) Pub Date : 2023-11-08 Wei Zhang, Dong Wang, Zenglin Wang, Tiankui Guo, Chunguang Wang, Jiayuan He, Le Zhang, Peng Zheng, Zhanqing Qu
As main heat exchange channel in enhanced geothermal system, the evolution of hydraulic conductivity in fracture is significance for efficient heat mining. For the thermal stress or thermal cracking spontaneously induced by the temperature difference between low-temperature fluid and hot rock in heat mining stage, it is necessary to explore the damage mechanism along EGS fracture and the corresponding
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Integration of distributed acoustic sensing for real-time seismic monitoring of a geothermal field Geotherm. Energy (IF 4.2) Pub Date : 2023-10-31 Jérôme Azzola, Katja Thiemann, Emmanuel Gaucher
To accelerate the energy transition, the exploitation of deep geothermal reservoirs is becoming a priority to supply district heating networks in areas with high potential for geothermal applications. However, the sustainable development of the resource exploitation implies minimizing the associated risks, in particular related to induced seismicity, while optimizing operational processes. Besides
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Application of in-situ gamma spectrometry for radiogenic heat production estimation in the Western Himalaya, Kohistan, and Karakoram in northern Pakistan Geotherm. Energy (IF 4.2) Pub Date : 2023-10-27 Muhammad Anees, Jonas Kley, Bernd Leiss, David Hindle, Ali Abbas Wajid, Bianca Wagner, Mumtaz M. Shah, Elco Luijendijk
The Himalaya, Kohistan, and Karakoram ranges comprise Proterozoic to Cenozoic crystalline complexes exposed in northern Pakistan. Numerous hot springs in the area indicate high subsurface temperatures, prompting a need to evaluate the local contribution of radiogenic heat to the general orogenic-related elevated geothermal gradients. The current study employed a portable gamma spectrometer to estimate
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Unveiling microbial diversity in deep geothermal fluids, from current knowledge and analogous environments Geotherm. Energy (IF 4.2) Pub Date : 2023-10-20 Danaé Bregnard, Alessio Leins, Guillaume Cailleau, Andrea Vieth-Hillebrand, Florian Eichinger, Joy Ianotta, Richard Hoffmann, Joerg Uhde, Saskia Bindschedler, Simona Regenspurg, Pilar Junier
Extreme environments on Earth host a large diversity of microbial life. Bacteria, archaea, and fungi are able to survive under one or several extreme conditions including extreme ranges of temperature, pressure, pH or salinity. Despite extensive research on extremophilic microorganisms, a relatively unexplored frontier within the study of the deep biosphere is the survey of the diversity of microorganisms
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The Muschelkalk aquifer of the Molasse basin in SW-Germany: implications on the origin and development of highly saline lithium-rich brines in calcareous hydrothermal reservoirs Geotherm. Energy (IF 4.2) Pub Date : 2023-09-29 Ingrid Stober, Jens Grimmer, Michael Kraml
Highly saline lithium-rich hydrothermal fluids (measured chloride concentration up to 44 g kg−1, lithium concentration up to 162 mg kg−1) occur in the deep calcareous Muschelkalk aquifer beneath the northern Alpine foreland (Molasse) basin. We have combined geologic, hydraulic, hydrochemical, and stress field data of the Triassic Muschelkalk aquifer beneath younger sediments of Triassic–Jurassic successions
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Correction: Structural control of the graben fault on hydrothermal alteration in the Cerro Pabellón geothermal system (Andean Cordillera, Northern Chile) Geotherm. Energy (IF 4.2) Pub Date : 2023-08-30 J. Vidal, P. Patrier, D. Beaufort, S. Maza, G. Rivera, G. Volpi, D. Morata
Correction: Geothermal Energy (2023) 11:18 https://doi.org/10.1186/s40517-023-00260-8 In the original publication (Vidal et al. 2023), the text “western” should have read “eastern” throughout the article. The original article has been corrected. Vidal J, Patrier P, Beaufort D, Maza S, Rivera G, Volpi G, Morata D. Structural control of the graben fault on hydrothermal alteration in the Cerro Pabellón
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Investigation and evaluation methods of shallow geothermal energy considering the influences of fracture water flow Geotherm. Energy (IF 4.2) Pub Date : 2023-08-19 Fengqiang Deng, Peng Pei, Yonglin Ren, Tingting Luo, Yixia Chen
The energy replenishment and heat convection induced by fracture water flowing through the rock mass impact the shallow geothermal energy occurrence, transfer and storage mechanisms in it. In this article, a suitability evaluation and categorization system is proposed by including judgement indexes that are more closely aligned with the actual hydrogeological conditions in fracture developed regions;
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Experimental study on the effect of CO2 storage on the reservoir permeability in a CO2-based enhanced geothermal system Geotherm. Energy (IF 4.2) Pub Date : 2023-08-09 Pan Li, Yang Hao, Yu Wu, Ayal Wanniarachchi, Hongxue Zhang, Zhili Cui
A CO2-based Enhanced Geothermal System (CO2-EGS) has dual benefits of heat extraction and CO2 storage. Mineralization storage of CO2 may reduce reservoir permeability, thereby affecting heat extraction. Solutions require further research to optimize and balance these two benefits. In this study, CO2 storage and heat extraction were simulated by alternating cyclic injection of water and supercritical
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Geochemical and H–O–Sr–B isotope signatures of Yangyi geothermal fields: implications for the evolution of thermal fluids in fracture-controlled type geothermal system, Tibet, China Geotherm. Energy (IF 4.2) Pub Date : 2023-08-07 Rui Cao, Ji Dor, YongQiang Cai, XiaoLin Chen, Xiang Mao, Hui-ren Meng
High-temperature hydrothermal systems are mainly distributed in the north–south graben systems of southern Tibet as an important part of the Mediterranean–Tethys Himalayan geothermal belt in mainland China. As the largest unit capacity and second stable operating geothermal power station in China, Yangyi is the fracture-controlled type geothermal field in the center of Yadong–Gulu Graben. In this paper
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Geophysical characteristics of a fault system in the northern Central Range of Taiwan and its applications for geothermal energy exploration Geotherm. Energy (IF 4.2) Pub Date : 2023-08-05 Bing-Cheng Chen, Tito Perdana, Li-Wei Kuo
The northern Central Range of Taiwan is a high-potential geothermal region. Since the formations are mainly tight metasandstone and slate, permeable structures associated with faults are commonly considered as conduits of geothermal fluids. This study determines the characteristics and orientations of the permeable fault zones by analyzing the geophysical logs and microresistivity formation image log
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Validation of Play Fairway Analysis of the geothermal potential of Camas Prairie, south-central Idaho, by an exploration well Geotherm. Energy (IF 4.2) Pub Date : 2023-08-04 Thomas E. Lachmar, Ghanashyam Neupane, Sabodh K. Garg, Patrick F. Dobson, Connor J. Smith, Dennis L. Newell, John W. Shervais, James P. Evans, Leland L. Mink
Play Fairway Analysis (PFA) methodology was adapted for geothermal exploration at Camas Prairie, Idaho. Geophysical data, structural and geologic mapping, volcanic rock ages and vent locations, and the distribution of thermal springs and wells all indicated a relatively high geothermal potential along the southern margin of the Prairie. An exploration well (USU Camas-1) was drilled to a depth of 618
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Modelling of flow through naturally fractured geothermal reservoirs, Taupō Volcanic Zone, New Zealand Geotherm. Energy (IF 4.2) Pub Date : 2023-08-01 Warwick M. Kissling, Cécile Massiot
Numerous fractures are observed in fractured geothermal reservoirs on borehole images in the Taupō Volcanic Zone (TVZ), Aotearoa New Zealand. These fractures are necessary to explain the sustained reservoir permeabilities despite the low matrix porosity. However, conventional continuum models do not adequately represent fluid flow through these fractured rocks. We present new Discrete Fracture Network
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Influence of extreme fracture flow channels on the thermal performance of open-loop geothermal systems at commercial scale Geotherm. Energy (IF 4.2) Pub Date : 2023-07-22 Nicolás Rangel-Jurado, Adam J. Hawkins, Patrick M. Fulton
Adequate stewardship of geothermal resources requires accurate forecasting of long-term thermal performance. In enhanced geothermal systems and other fracture-dominated reservoirs, predictive models commonly assume constant-aperture fractures, although spatial variations in aperture can greatly affect reservoir permeability, fluid flow distribution, and heat transport. Whereas previous authors have
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Structural control of the graben fault on hydrothermal alteration in the Cerro Pabellón geothermal system (Andean Cordillera, Northern Chile) Geotherm. Energy (IF 4.2) Pub Date : 2023-06-29 J. Vidal, P. Patrier, D. Beaufort, S. Maza, G. Rivera, G. Volpi, D. Morata
This study focuses on hydrothermal alteration in the geothermal reservoir of Cerro Pabellón (Andean Cordillera, Northern Chile). It is based on CP2A and CP5A production wells drilled above a local normal fault and presenting unlike hydraulic properties. Cuttings from 300 to 1555 m depth were sampled and analyzed using X-ray diffraction (XRD) to observe distribution of hydrothermal minerals and crystal
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Laboratory experiments on the effects of corrosion inhibitor on the mechanical properties of reservoir rock Geotherm. Energy (IF 4.2) Pub Date : 2023-06-08 Jon-Danilo Kortram, Auke Barnhoorn, Anne Pluymakers
Geothermal energy production often involves use of corrosion inhibitors. We performed rock mechanical experiments (room temperature; confining pressure of 10/20/30 MPa) on typical reservoir rocks (Bentheim sandstone and Treuchtlinger limestone) in contact with two different inhibitor solutions or with demineralized water. The sandstone experiments show no discernible difference in rock strength between
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Operational strategies to alleviate thermal impacts of the large-scale borehole heat exchanger array in Beijing Daxing Airport Geotherm. Energy (IF 4.2) Pub Date : 2023-06-07 Yaqian Ren, Yanlong Kong, Yonghui Huang, Shu Bie, Zhonghe Pang, Jichao He, Wei Yi, Bin He, Jiyang Wang
Large-scale ground source heat pump (GSHP) systems are increasingly used for space heating and cooling. In comparison with smaller ones, large GSHP systems are often coupled with much more borehole heat exchangers (BHEs). Because of the intense thermal interactions between BHEs, they are more susceptible to significant ground temperature changes. Meanwhile, they possess the advantage that their operational
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Comparison and integration of simulation models for horizontal connection pipes in geothermal bore fields Geotherm. Energy (IF 4.2) Pub Date : 2023-06-02 Stephan Düber, Raul Fuentes, Guillermo A. Narsilio
The heat transfer along horizontal connection pipes in geothermal bore fields can have significant effects and should not be neglected. As practical and design-related applications require simple and efficient models, we investigate suitability of different models for the first time within this context. Three ground and three pipe models of different complexity are studied. All model combinations are
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The northeastern Algeria hydrothermal system: gravimetric data and structural implication Geotherm. Energy (IF 4.2) Pub Date : 2023-05-23 Yasser Bayou, Abdeslam Abtout, Rosemary A. Renaut, Boualem Bouyahiaoui, Said Maouche, Saeed Vatankhah, Mohamed Cherif Berguig
The Tell Atlas of Algeria has a huge potential for hydrothermal energy from over 240 thermal springs with temperatures up to $$98^\circ$$ C in the Guelma area. The most exciting region is situated in the northeastern part which is known to have the hottest hydrothermal systems. In this work, we use a high-resolution gravity study to identify the location and origin of the hot water, and how it reaches
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Distribution of surface heat flow and effects on the subsurface temperatures in the northern part of Thrace Basin, NW Turkey Geotherm. Energy (IF 4.2) Pub Date : 2023-05-19 Kamil Erkan, Elif Balkan-Pazvantoğlu
The Thrace Basin in northwestern Turkey is a deep Eocene–Oligocene hydrocarbon-bearing sedimentary basin. The basin has potential for geothermal energy utilization in the future due to its favorable geological conditions. In this study, we combined the available bottom hole temperature (BHT) data from 70 points with the thermal conductivity and radiogenic heat productions of the basin formations, and
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Parameter identification and range restriction through sensitivity analysis for a high-temperature heat injection test Geotherm. Energy (IF 4.2) Pub Date : 2023-05-14 Stefan Heldt, Bo Wang, Sebastian Bauer
In order to compensate for the variable mismatch between heat demand and heat production from renewable sources or waste heat, high-temperature aquifer thermal energy storage (HT-ATES) is a promising option. A reliable prediction of the energetic performance as well as thermal and hydraulic impacts of a HT-ATES requires a suitable model parameterization regarding the subsurface properties. In order
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Quantification of the effect of gas–water–equilibria on carbonate precipitation Geotherm. Energy (IF 4.2) Pub Date : 2023-04-30 Lilly Zacherl, Thomas Baumann
The expanding geothermal energy sector still faces performance issues due to scalings in pipes and surface level installations, which require elevated operation pressure levels and costly maintenance. For facilities in the North Alpine Foreland Basin, the precipitation of $${\hbox {CaCO}}_{3}$$ is the main problem which is a consequence of the disruption of the lime-carbonic acid equilibrium during
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Correction: The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico) Geotherm. Energy (IF 4.2) Pub Date : 2023-04-26 Leandra M. Weydt, Federico Lucci, Alicja Lacinska, Dirk Scheuvens, Gerardo Carrasco-Núñez, Guido Giordano, Christopher A. Rochelle, Stefanie Schmidt, Kristian Bär, Ingo Sass
Correction: Geothermal Energy (2022) 10:20 https://doi.org/10.1186/s40517-022-00231-5 In the original publication of the article, the tables were formatted incorrectly. The original article (Weydt et al. 2022) has been corrected. Weydt LM, Lucci F, Lacinska A, Scheuvens D, Carrasco-Núñez G, Giordano G, Rochelle CA, Schmidt S, Bär K, Sass I. The impact of hydrothermal alteration on the physiochemical
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Exergy and exergoenvironmental assessment of a geothermal heat pump and a wind power turbine hybrid system in Shanghai, China Geotherm. Energy (IF 4.2) Pub Date : 2023-04-24 Yashar Aryanfar, Jorge Luis García Alcaraz
Geothermal heat pumps are one of the most growing and cost-effective renewable energy technologies based on the temperature difference between the ground and the environment. In the cold seasons, the temperature inside the soil or water is higher than the ambient temperature. Therefore, the heat pump is used to extract the warm temperature of the ground into the house or any other controlled space
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Experimental study on convective heat transfer of an open-loop borehole heat exchanger Geotherm. Energy (IF 4.2) Pub Date : 2023-04-20 Xianbiao Bu, Kunqing Jiang, Huashan Li, Feng Ma, Lingbao Wang
Open-loop borehole heat exchanger (OBHE) is a single well geothermal heat exchanger with an open-loop structure that can realize the geothermal energy extraction without mining the geothermal water. In this paper, a sandbox experiment is designed to simulate the convective heat transfer process in the reservoir area of OBHE. The mechanism of convective heat transfer in the reservoir area is studied
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Cooling-induced permeability enhancement for networks of microfractures in superhot geothermal environments Geotherm. Energy (IF 4.2) Pub Date : 2023-04-17 Ryota Goto, Daisuke Nakayama, Ryota Takahashi, Eko Pramudyo, Kohei Takuma, Noriaki Watanabe
Recent researches have proposed the use of enhanced geothermal system reservoirs consisting of dense networks of microfractures, created by hydraulic and/or thermal fracturing in superhot/supercritical geothermal environments, because of their suitability for thermal energy harvesting. During fracturing and energy extraction, the fracture networks are exposed to cooling due to the injection of cold
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Thermal modeling and simulation of a single-flash geothermal power plant involving non-condensable gas: a case study of Kamojang geothermal field in Garut, West Java, Indonesia Geotherm. Energy (IF 4.2) Pub Date : 2023-03-20 Candra Mecca Sufyana, Fiki Taufik Akbar, Wahyu Srigutomo
The presence of non-condensable gases (NCGs) in a geothermal fluid disrupts the vacuum process in the condenser, reducing turbine efficiency and decreasing the total power output of the geothermal power plant (GPP). Therefore, to optimize the thermodynamic efficiency of a GPP, NCGs should be removed using a gas removal system. Since there is a substantial lack of design and simulation software for
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Optimized geothermal energy extraction from hot dry rocks using a horizontal well with different exploitation schemes Geotherm. Energy (IF 4.2) Pub Date : 2023-02-22 Guoshu Huang, Xiangyun Hu, Huolin Ma, Liang Liu, Jian Yang, Wenlong Zhou, Weiyang Liao, Bai Ningbo
In the foreseeable future, the geothermal exploitation from hot dry rocks (HDR) using a horizontal well will bear potential. Thus, in-depth studies should be conducted on the selection of injection-production scheme (IPS) and working fluid, design of reinjection parameters, optimization of wellbore structure and materials, and analysis of geological settings. This paper proposed a fully coupled model
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Exergy analyses and optimization of a single flash geothermal power plant combined with a trans-critical CO2 cycle using genetic algorithm and Nelder–Mead simplex method Geotherm. Energy (IF 4.2) Pub Date : 2023-02-08 Jian Huang, Azher M. Abed, Sayed M. Eldin, Yashar Aryanfar, Jorge Luis García Alcaraz
Compared with conventional fossil fuel sources, geothermal energy has several advantages. The produced geothermal energy is safe for the environment and suitable for meeting heating power needs. Because the hot water used in the geothermal process can be recycled and used to generate more steam, this energy is sustainable. Furthermore, the climate change does not affect geothermal power installations
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Advances in the modeling of the Iberian thermal lithosphere and perspectives on deep geothermal studies Geotherm. Energy (IF 4.2) Pub Date : 2023-02-04 M. Torne, I. Jiménez-Munt, A. M. Negredo, J. Fullea, J. Vergés, I. Marzán, J. Alcalde, E. Gómez-Rivas, C. García de la Noceda
Renewable energy sources are key to achieve the transition toward clean energy system. Among them, the geothermal energy has a production whose effectiveness requires sufficient understanding of the temperature distribution and fluid circulation at depth, as well as of the lithological and petrophysical properties of the crust. The focus of this paper is twofold: first, we summarize the main advances
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How temperatures derived from fluid flow and heat transport models impact predictions of deep geothermal potentials: the “heat in place” method applied to Hesse (Germany) Geotherm. Energy (IF 4.2) Pub Date : 2023-01-27 Nora Koltzer, Judith Bott, Kristian Bär, Magdalena Scheck-Wenderoth
One key aspect in the energy transition is to use the deep geothermal energy stored in sedimentary basins as well as in igneous and metamorphic basement rocks. To estimate the variability of deep geothermal potentials across different geological domains as encountered in the Federal State of Hesse (Germany), it is necessary to understand the driving processes of fluid flow and heat transport affecting
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From pilot knowledge via integrated reservoir characterization to utilization perspectives of deep geothermal reservoirs: the 3D model of Groß Schönebeck (North German Basin) Geotherm. Energy (IF 4.2) Pub Date : 2023-01-06 Norden, Ben, Bauer, Klaus, Krawczyk, Charlotte M.
The Groß Schönebeck site in the North German Basin serves as research platform to study the geothermal potential of deeply buried Permian reservoir rocks and the technical feasibility of heat extraction. The structural setting of the site was investigated in more detail by a newly acquired 3D-seismic survey to improve the former conceptual model that was based on several old 2D seismic lines. The new
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Permeability anisotropy in sandstones from the Soultz-sous-Forêts geothermal reservoir (France): implications for large-scale fluid flow modelling Geotherm. Energy (IF 4.2) Pub Date : 2022-12-30 Goupil, Margaux, Heap, Michael J., Baud, Patrick
The successful exploitation of geothermal reservoirs relies upon the understanding of fluid circulation in the subsurface. However, large-scale fluid flow modelling often assumes that the permeability of the layers of rock within the model are isotropic. We present here a laboratory study in which we assessed the permeability anisotropy of seven Buntsandstein sandstone cores taken from the geothermal
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Correction: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland Geotherm. Energy (IF 4.2) Pub Date : 2022-12-20 Forster, Florian, Güntner, Andreas, Jousset, Philippe, Reich, Marvin, Männel, Benjamin, Hinderer, Jacques, Erbas, Kemal
Figure 8 has been removed from this article (Forster et al. 2021) because the authors do not have permission to publish these data. Forster F, Güntner A, Jousset P, Reich M, Männel B, Hinderer J, Erbas K. Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland. Geothermal Energy. 2021;9:26. https://doi.org/10.1186/s40517-021-00208-w. Article Google
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Petrophysical characterization, BIB-SEM imaging, and permeability models of tight carbonates from the Upper Jurassic (Malm ß), SE Germany Geotherm. Energy (IF 4.2) Pub Date : 2022-12-19 Freitag, Simon, Klaver, Jop, Malai, Iulian S., Klitzsch, Norbert, Urai, Janos L., Stollhofen, Harald, Bauer, Wolfgang, Schmatz, Joyce
Tight carbonate rocks are important hydrocarbon and potential geothermal reservoirs, for example, in CO2-Enhanced Geothermal Systems. We report a study of outcrop samples of tectonically undeformed tight carbonates from the upper Jurassic “Malm ß” formation in Southern Germany near the town of Simmelsdorf (38 km NE of Nuremberg) to understand bulk petrophysical properties in relation to microstructure
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Investigating high permeable zones in non-volcanic geothermal systems using lineament analysis and fault fracture density (FFD): northern Konawe Regency, Indonesia Geotherm. Energy (IF 4.2) Pub Date : 2022-12-17 Arrofi, Daffa, Abu-Mahfouz, Israa S., Prayudi, Sinatrya Diko
Indonesia has high geothermal potential comprising 40% of the world’s potential geothermal energy, volcanic and non-volcanic systems. Volcanic systems have witnessed more exploration activities for geothermal resources compared to non-volcanic systems. A high potential non-volcanic system in Indonesia is located in the northern part of Konawe, Southeast Sulawesi. Previous research had identified surface
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Magnetic and gravity modeling and subsurface structure of two geothermal fields in the UAE Geotherm. Energy (IF 4.2) Pub Date : 2022-12-12 Saibi, Hakim, Amrouche, Mohamed, Batir, Joseph, Gabr, Amir, Fowler, Abdel-Rahman
There are two low-enthalpy geothermal systems along the eastern border of the United Arab Emirates: Ain Khatt (Khatt City, Ras Al Khaimah Emirate) and Green Mubazzarah–Ain Faidha (GMAF) (Al-Ain City, Abu Dhabi Emirate). The hot springs are likely to be meteoric waters fed through deep-seated faults that intersect the geothermal reservoirs at 2.6–3.8 km depth. Gravity and magnetic data were analyzed
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A novel workflow for geothermal exploration: 3D seismic interpretation of biohermal buildups (Upper Jurassic, Molasse Basin, Germany) Geotherm. Energy (IF 4.2) Pub Date : 2022-11-19 Wolpert, Philipp, Aigner, Thomas, Bendias, Daniel, Beichel, Kilian, Zosseder, Kai
The Upper Jurassic carbonates are the prime target for deep geothermal exploration in the Molasse basin, South Germany. The carbonates have a thickness of over 500m (1640 ft) and consist of two major facies: (1) bedded marly limestone and (2) massive limestone and dolostone. The massive limestone facies is composed of sponge-microbial biohermal buildups It is considered the main geothermal reservoir
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Development of a risk assessment tool for deep geothermal projects: example of application in the Paris Basin and Upper Rhine graben Geotherm. Energy (IF 4.2) Pub Date : 2022-11-16 Maury, Julie, Hamm, Virginie, Loschetter, Annick, Le Guenan, Thomas
This paper presents the development of a tool to perform risk assessment for deep geothermal projects. The tool is aimed at project developers to help them present their project to local authority, decision-makers and financers so they can highlight how they take into account risks and consider mitigation measures to minimize them. The main criteria for this tool are the simplicity of use, the quality
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Performance of a hybrid heating system based on enhanced deep borehole heat exchanger and solar energy Geotherm. Energy (IF 4.2) Pub Date : 2022-10-28 He, Yujiang, Bu, Xianbiao
Deep borehole heat exchanger (DBHE) is a closed loop system without the problem of fluid losses, scale formation and corrosion; however, low rock thermal conductivity limits its performance. Enlightened by drilling mud loss in oil and gas industry, here an enhanced DBHE (EDBHE) is proposed by filling materials with much higher thermal conductivity into leakage formation or depleted gas and oil reservoir
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Potential of low-temperature aquifer thermal energy storage (LT-ATES) in Germany Geotherm. Energy (IF 4.2) Pub Date : 2022-10-17 Stemmle, Ruben, Hammer, Vanessa, Blum, Philipp, Menberg, Kathrin
More than 30% of Germany’s final energy consumption currently results from thermal energy for heating and cooling in the building sector. One possibility to achieve significant greenhouse gas emission savings in space heating and cooling is the application of aquifer thermal energy storage (ATES) systems. Hence, this study maps the spatial technical potential of shallow low-temperature ATES systems
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Heat storage efficiency, ground surface uplift and thermo-hydro-mechanical phenomena for high-temperature aquifer thermal energy storage Geotherm. Energy (IF 4.2) Pub Date : 2022-10-06 Vidal, Rubén, Olivella, Sebastià, Saaltink, Maarten W., Diaz-Maurin, François
High-temperature aquifer thermal energy storage (HT-ATES) systems can help in balancing energy demand and supply for better use of infrastructures and resources. The aim of these systems is to store high amounts of heat to be reused later. HT-ATES requires addressing problems such as variations of the properties of the aquifer, thermal losses and the uplift of the surface. Coupled thermo-hydro-mechanical
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Geothermal resources assessment using temperature–depth relationships in the fault-controlled hydrothermal system of Aristino-Traianoupolis area, Northern Greece Geotherm. Energy (IF 4.2) Pub Date : 2022-10-01 Dalampakis, P., Papachristou, M., Neofotistos, P.
Aristino-Traianoupolis area hosts one of the most significant water-dominated low-temperature geothermal fields in Greece. It is located on the southwestern uplifted margin of the Tertiary Evros Delta molassic basin, 10 km east of the town of Alexandroupolis (Thrace, NE Greece). The upper hydrothermal system of the Aristino Geothermal Field (AGF), one of the most promising in continental Greece, contains
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Evaluation of closed-loop U-Tube deep borehole heat exchanger in the Basal Cambrian Sandstone formation, Alberta, Canada Geotherm. Energy (IF 4.2) Pub Date : 2022-10-01 Chong, Qinwan, Wang, Jingyi, Gates, Ian D.
Closed-loop deep borehole heat exchanger (DBHE) systems for producing heat from geothermal sources have the advantage that the heat transfer fluid is contained within the loop. In this study, for the first time, a U-configuration closed-loop DBHE was examined to evaluate the energy produced per unit energy invested from a 2330-m-deep geothermal reservoir in central Alberta, Canada. A detailed earth
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The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico) Geotherm. Energy (IF 4.2) Pub Date : 2022-09-30 Weydt, Leandra M., Lucci, Federico, Lacinska, Alicja, Scheuvens, Dirk, Carrasco-Núñez, Gerardo, Giordano, Guido, Rochelle, Christopher A., Schmidt, Stefanie, Bär, Kristian, Sass, Ingo
Hydrothermal alteration is a common process in active geothermal systems and can significantly change the physiochemical properties of rocks. To improve reservoir assessment and modeling of high-temperature geothermal resources linked to active volcanic settings, a detailed understanding of the reservoir is needed. The Los Humeros Volcanic Complex, hosting the third largest exploited geothermal field
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The impact of wind and geothermal energy consumption on economic growth and financial development: evidence on selected countries Geotherm. Energy (IF 4.2) Pub Date : 2022-09-29 Doğan, Mesut, Tekbaş, Murat, Gursoy, Samet
The aim of this study is to investigate the impacts of wind and geothermal energy consumption on economic growth and financial development over the period 2016:M1 and 2020:M11. The data obtained from Germany, Iceland, Italy, Japan, Mexico, New Zealand, Portugal, Turkey, and the United States of America, which consume wind and geothermal energy, were utilized in the research study. To this end, after
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Assessment of deep geothermal research and development in the Upper Rhine Graben Geotherm. Energy (IF 4.2) Pub Date : 2022-09-29 Frey, Matthis, Bär, Kristian, Stober, Ingrid, Reinecker, John, van der Vaart, Jeroen, Sass, Ingo
Deep geothermal energy represents a key element of future renewable energy production due to its base load capability and the almost inexhaustible resource base. Especially with regard to heat supply, this technology offers a huge potential for carbon saving. One of the main targets of geothermal projects in Central Europe is the Upper Rhine Graben, which exhibits elevated subsurface temperatures and