Relevant bibliographies by topics / High enthalpy geothermal reservoirs

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  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'High enthalpy geothermal reservoirs'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "High enthalpy geothermal reservoirs"

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Wang, X., G. L. Wang, H. N. Gan, Z. Liu, and D. W. Nan. "Hydrochemical Characteristics and Evolution of Geothermal Fluids in the Chabu High-Temperature Geothermal System, Southern Tibet." Geofluids 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/8532840.

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This study defines reasonable reservoir temperatures and cooling processes of subsurface geothermal fluids in the Chabu high-temperature geothermal system. This system lies in the south-central part of the Shenzha-Xietongmen hydrothermal active belt and develops an extensive sinter platform with various and intense hydrothermal manifestations. All the geothermal spring samples collected systematically from the sinter platform are divided into three groups by cluster analysis of major elements. Samples of group 1 and group 3 are distributed in the central part and northern periphery of the sinter platform, respectively, while samples of group 2 are scattered in the transitional zone between groups 1 and 3. The hydrochemical characteristics show that the geothermal waters of the research area have generally mixed with shallow cooler waters in reservoirs. The reasonable reservoir temperatures and the mixing processes of the subsurface geothermal fluids could be speculated by combining the hydrochemical characteristics of geothermal springs, calculated results of the chemical geothermometers, and silica-enthalpy mixing models. Contour maps are applied to measured emerging temperatures, mass flow rates, total dissolved solids of spring samples, and reasonable subsurface temperatures. They indicate that the major cooling processes of the subsurface geothermal fluids gradually transform from adiabatic boiling to conduction from the central part to the peripheral belt. The geothermal reservoir temperatures also show an increasing trend. The point with the highest reservoir temperature (256°C) appears in the east-central part of the research area, which might be the main up-flow zone. The cooling processes of the subsurface geothermal fluids in the research area can be shown on an enthalpy-chloride plot. The deep parent fluid for the Chabu geothermal field has a Cl− concentration of 290 mg/L and an enthalpy of 1550 J/g (with a water temperature of 369°C).
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Trota, Ferreira, Gomes, Cabral, and Kallberg. "Power Production Estimates from Geothermal Resources by Means of Small-Size Compact Climeon Heat Power Converters: Case Studies from Portugal (Sete Cidades, Azores and Longroiva Spa, Mainland)." Energies 12, no. 14 (July 23, 2019): 2838. http://dx.doi.org/10.3390/en12142838.

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Renewable forms of energy are increasingly penetrating the electricity market, particularly, geothermal energy. A wide range of resource temperatures and fluid quality are converted mostly using traditional binary power plants and, recently, using Climeon modular units. Portuguese natural geothermal resources are far from precise estimations. Despite the parameter uncertainties, electric power resource estimations of two natural geothermal reservoirs are presented: a volcanic sourced heated high-enthalpy geothermal reservoir in Sete Cidades, São Miguel Island, Azores; and a low-enthalpy geothermal reservoir linked to a fractured zone in a granitic setting in Longroiva, in the northern part of the Portuguese mainland. Based on the volumetric method, we assessed the power potential of geothermal resources in Sete Cidades and Longroiva using a probabilistic methodology—Monte Carlo simulation. The average reserve estimations for Climeon module were 5.66 MWe and 0.64 MWe for Sete Cidades and Longroiva, respectively. This figure was by far higher when compared to traditional binary technology; those differences were mostly attributed to distinct conversions efficiency factors.
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Grippi, Jamie. "Reviewing the relationship between thermal reservoir parameters and geothermal energy output." PAM Review Energy Science & Technology 5 (May 31, 2018): 2–21. http://dx.doi.org/10.5130/pamr.v5i0.1494.

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This meta-study draws upon contemporary literature to examine parameters of thermal reservoirs and their relationships to geothermal power station output metrics. The objectives of the meta-study are to identify trends and quantify the influence of each parameter on the system as a whole. This study provides a framework for industry and researchers exploring new potential geothermal fields. Six reservoir parameters – well depth, temperature, enthalpy, mass flow rate, thermal gradient and crust thickness – were plotted against the net electrical output per production well (Enet/well) and exergy efficiency (ηB) of 64 geothermal facilities. The meta-study identified that reservoir temperature has the greatest proportionality to power output, with yields above 10MWe exhibited only for high enthalpy reservoirs exceeding 500K. Well depth has the greatest inverse proportionality to exergy efficiency, with upper limit values declining below 80% for wells deeper than 3000m. Well depth has a similar trend line, though lesser correlation, as reservoir temperature to power output. Crust thickness has an inverse correlation to exergy efficiency, with upper limit values dropping from 100% to 65% as thickness increased from 30 to 45km. There was significant clustering of data points in most trendless plots, suggesting a considerable degree of homogeneity between currently tapped reservoirs and turbine efficiencies. The low number of well-defined data trends implies a high degree of complexity arising from the relationships between reservoir parameters that make quantification problematic. Despite this difficulty, examination of the aforementioned parameters suggests that although hotter reservoirs are usually found at greater depths, the hottest and shallowest reservoirs should be prioritized for use in order to return maximal power outputs and reduce exergy losses that occur along large lengths of piping.
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Yadav, Kriti, and Anirbid Sircar. "REVIEW OF DEEP DRILLING TECHNIQUES FOR HIGH ENTHALPY GEOTHERMAL RESERVOIRS." International Journal of Advanced Research 5, no. 6 (June 30, 2017): 2359–70. http://dx.doi.org/10.21474/ijar01/4681.

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Elders, W. A., D. Nielson, P. Schiffman, and A. Schriener Jr. "Investigating ultra high-enthalpy geothermal systems: a collaborative initiative to promote scientific opportunities." Scientific Drilling 18 (December 22, 2014): 35–42. http://dx.doi.org/10.5194/sd-18-35-2014.

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Abstract. Scientists, engineers, and policy makers gathered at a workshop in the San Bernardino Mountains of southern California in October 2013 to discuss the science and technology involved in developing high-enthalpy geothermal fields. A typical high-enthalpy geothermal well between 2000 and 3000 m deep produces a mixture of hot water and steam at 200–300 °C that can be used to generate about 5–10 MWe of electric power. The theme of the workshop was to explore the feasibility and economic potential of increasing the power output of geothermal wells by an order of magnitude by drilling deeper to reach much higher pressures and temperatures. Development of higher enthalpy geothermal systems for power production has obvious advantages; specifically higher temperatures yield higher power outputs per well so that fewer wells are needed, leading to smaller environmental footprints for a given size of power plant. Plans for resource assessment and drilling in such higher enthalpy areas are already underway in Iceland, New Zealand, and Japan. There is considerable potential for similar developments in other countries that already have a large production of electricity from geothermal steam, such as Mexico, the Philippines, Indonesia, Italy, and the USA. However drilling deeper involves technical and economic challenges. One approach to mitigating the cost issue is to form a consortium of industry, government and academia to share the costs and broaden the scope of investigation. An excellent example of such collaboration is the Iceland Deep Drilling Project (IDDP), which is investigating the economic feasibility of producing electricity from supercritical geothermal reservoirs, and this approach could serve as model for future developments elsewhere. A planning committee was formed to explore creating a similar initiative in the USA.
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Pluymaekers, M. P. D., L. Kramers, J. D. van Wees, A. Kronimus, S. Nelskamp, T. Boxem, and D. Bonté. "Reservoir characterisation of aquifers for direct heat production: Methodology and screening of the potential reservoirs for the Netherlands." Netherlands Journal of Geosciences - Geologie en Mijnbouw 91, no. 4 (December 2012): 621–36. http://dx.doi.org/10.1017/s001677460000041x.

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AbstractGeothermal low enthalpy heat in non-magmatic areas can be produced by pumping hot water from aquifers at large depth (>1 km). Key parameters for aquifer performance are temperature, depth, thickness and permeability. Geothermal exploration in the Netherlands can benefit considerably from the wealth of oil and gas data; in many cases hydrocarbon reservoirs form the lateral equivalent of geothermal aquifers. In the past decades subsurface oil and gas data have been used to develop 3D models of the subsurface structure. These models have been used as a starting point for the mapping of geothermal reservoir geometries and its properties. A workflow was developed to map aquifer properties on a regional scale. Transmissivity maps and underlying uncertainty have been obtained for 20 geothermal aquifers. Of particular importance is to take into account corrections for maximum burial depth and the assessment of uncertainties. The mapping of transmissivity and temperature shows favorable aquifer conditions in the northern part of the Netherlands (Rotliegend aquifers), while in the western and southern parts of the Netherlands aquifers of the Triassic and Upper Cretaceous / Jurassic have high prospectivity. Despite the high transmissivity of the Cenozoic aquifers, the limited depth and temperature reduce the prospective geothermal area significantly.The results show a considerable remaining uncertainty of transmissivity values, due to lack of data and heterogeneous spatial data distribution. In part these uncertainties may be significantly reduced by adding well test results and facies parameters for the map interpolation in future work. For underexplored areas this bears a significant risk, but it can also result in much higher flowrates than originally expected, representing an upside in project performance.
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Ardakani, Elahe P., and Douglas R. Schmitt. "Geothermal energy potential of sedimentary formations in the Athabasca region, northeast Alberta, Canada." Interpretation 4, no. 4 (November 1, 2016): SR19—SR33. http://dx.doi.org/10.1190/int-2016-0031.1.

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The Athabasca region, located in the northeast of Alberta, Canada, hosts many ongoing projects of bitumen extraction from oil sands and Devonian carbonate and siliciclastic reservoirs, which require a vast amount of thermal energy. Geothermal energy as a green renewable source of heat can help to reduce the amount of fossil fuels used to provide the required thermal energy for these projects and consequently decrease the greenhouse gas emission. To assess the geothermal development potential in this region, an integrated regional-scale 3D model was constructed with geologic and geophysical data (approximately 7000 formation tops and approximately 800 km seismic 2D profiles). Incorporation of 2D seismic profiles that filled in the gaps between sparse geologic tops particularly for deeper formations adds to structural details of the modeled formations. The temperature and porosity fields were simulated using the sequential Gaussian simulation approach within the modeled sedimentary formations. Based on spatial distribution, thickness, formation porosity and permeability analysis, five Paleozoic formations of Keg River, Waterways, Cooking Lake, Leduc, and Grosmont were identified as potential aquifers for geothermal development. These aquifers have enough coverage and thickness in the area and possess a high amount of thermal energy content. Because the sedimentary basin in the Athabasca region is quite shallow (less than 1400 m), these aquifers are all recognized as low enthalpy geothermal reservoirs with maximum of 40°C temperature and hence direct heating applications are not feasible. Use of industrial-scale heat-pump technologies that have long been used in northern Europe with high coefficients of performance would be recommended for heat extraction from these reservoirs.
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Dwinanto, Ariya, and Sudjati Rachmat. "Aerated Underbalance Drilling Screening Assessment at “X” Geothermal Field." KnE Energy 1, no. 1 (December 1, 2015): 22. http://dx.doi.org/10.18502/ken.v1i1.339.

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<p>Fault network is a challenging problem for geothermal drilling operations. Formation fluid contains high temperature production fluid which can reach &gt;225oC on high enthalpy system. The other consequences is that almost all fault network has low pressure or subnormal pressure. This low pressure results to a loss circulation problem. This low pressure can even go lower if the geothermal field has been exploited for a long period. A miss reservoir management, that do not re-inject sufficient amount of fluid, will cause the reservoir pressure go lower. Another problem in Indonesia is the conservation area which almost all high enthalpy geothermal system exist. The pay zone that is beneath the conservation area must be reached by directional drilling as a solution. High temperature fluid, low formation pressure and conservation areas are problems for geothermal drilling. To overcome these problems, underbalance drilling method has an advantage dealing with low pressure reservoir.</p><p><br />This paper introduces a way to screen the underbalance drilling method on a certain field. This study will help the quantitative and qualitative decision whether the underbalance drilling is feasible or not. The first phase qualitative decision is based on wellbore stability, loss circulation, reservoir damage, stuck pipe incident, hard drilling and cost benefit. Then it will go to the drilling fluid decision. And at the end as a quantitative decision for constructing a feasible bottom hole pressure window area with some hole cleaning assessment. Underbalance drilling assessment will be studied on field “X” at one of Indonesia’s geothermal field. The screening of “X” geothermal field comes with conclusions that it has an opportunity underbalance drilling can be implemented with vertical aerated drilling wells on spesific gas and liquid flow rates.</p><p> </p><p><strong>Keywords</strong>: <em>Geothermal, underbalance drilling, aerated drilling </em></p>
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Menezes, Paulo T. L., Jandyr M. Travassos, Adriano J. A. Marçal, and Fernando A. Monteiro Santos. "3D magnetotelluric exploration of Sete Cidades Volcano, São Miguel Island, Azores." Interpretation 5, no. 2 (May 31, 2017): T219—T230. http://dx.doi.org/10.1190/int-2016-0018.1.

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Geothermal energy accounts for 43% of the electricity expenditure of São Miguel Island, Azores Archipelago. All production comes from the Ribeira Grande (RG) high-enthalpy geothermal field. To meet the growing energy demand in the island, it is necessary to extend the exploration efforts to new areas. We evaluated the results of a broadband magnetotelluric reconnaissance survey conducted at Sete Cidades Volcano, placed only 30 km westward of the RG field. The resistivity structure of the Sete Cidades geothermal system was obtained through a simultaneous 3D inversion of the full impedance tensor and tipper. The bathymetry and the topography of the island were treated as fixed features in the model. The geothermal reservoir at Sete Cidades is outlined as a northwest–southeast elongated resistive anomaly, geologically controlled by the Terceira Rift fracture zone. We have also identified high-conductivity zones between 1000 and 4000 m below mean sea level, probably associated with clay cap rocks overlying the geothermal reservoir.
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Fan, Pang, Liao, Tian, Hao, Huang, and Li. "Hydrogeochemical Characteristics and Genesis of Geothermal Water from the Ganzi Geothermal Field, Eastern Tibetan Plateau." Water 11, no. 8 (August 7, 2019): 1631. http://dx.doi.org/10.3390/w11081631.

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The Ganzi geothermal field, located in the eastern sector of the Himalayan geothermal belt, is full of high-temperature surface manifestations. However, the geothermal potential has not been assessed so far. The hydrochemical and gas isotopic characteristics have been investigated in this study to determine the geochemical processes involved in the formation of the geothermal water. On the basis of δ18O and δD values, the geothermal waters originate from snow and glacier melt water. The water chemistry type is dominated by HCO3-Na, which is mainly derived from water-CO2-silicate interactions, as also indicated by the 87Sr/86Sr ratios (0.714098–0.716888). Based on Cl-enthalpy mixing model, the chloride concentration of the deep geothermal fluid is 37 mg/L, which is lower than that of the existing magmatic heat source area. The estimated reservoir temperature ranges from 180–210 °C. Carbon isotope data demonstrate that the CO2 mainly originates from marine limestone metamorphism, with a fraction of 74–86%. The helium isotope ratio is 0.17–0.39 Ra, indicating that the He mainly comes from atmospheric and crustal sources, and no more than 5% comes from a mantle source. According to this evidence, we propose that there is no magmatic heat source below the Ganzi geothermal field, making it a distinctive type of high-temperature geothermal system on the Tibetan Plateau.
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Dissertations / Theses on the topic "High enthalpy geothermal reservoirs"

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Armani, Silvia. "High-enthalpy geothermal reservoir model calibration using PEST." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13293/.

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The main purpose of this thesis work is focused on the use of PEST (Parameter Estimation) to calibrate numerical models of High Enthalpy Geothermal Reservoirs (HEGR). PEST is a parameter estimation and analysis of the uncertainties of complex numerical models tool, that can be instructed to work with a standalone simulator. So, the T2Well-EWASG was used as coupled wellbore-reservoir simulator for multiphase-multicomponent HEGR. The idea of this thesis work is that the possibility to implement some automation degrees in the wellbore-reservoir model calibration task would improve substantially the Reservoir Engineers work. To become familiar with PEST, it has been necessary a preliminary training to learn how to manage its input files, its keywords, and the utility programs having the function of verifying the correctness and consistency of the created files. Then, one of the examples of PEST manual (which Fortran source code is supplied) was reproduced and analyzed, and subsequently modified. In particular, starting from this example, a simple linear model with two free parameters, some changes have been performed: "fixing" a parameter to inhibit its change during the calibration; reading a more complex model output file respect to the original example; inserting dummy data that should not be processed and instructing PEST to consider only the data of interest; changing the model adding parameters to be calibrated, and including them in the analysis changing the PEST inputs files. Finally, these skills were applied to use PEST with T2Well-EWASG to calibrate a numerical model, relative to a real HEGR, previously calibrated via a trial and error approach in a PhD thesis work. Among the real data used there were also short production-tests done in a geothermal field located in the Dominica Commonwealth. The preliminary results show that the PEST-T2Well-EWASG calibration system works fine, and that it is a useful tool that can improve the work of reservoir engineering.
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Miele, Roberto. "Thermal rock properties of geothermal reservoirs and caprocks in the Danish Basin – prerequisites for geothermal applications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16250/.

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The Danish subsurface provides a large potential for the use of low-enthalpy geothermal heat and, thereby, to change the national district heating structure by providing a base load power to the system. In the past decade, new exploration and research campaigns were performed to remove geological, technical and commercial obstacles for a significant use of these geothermal resources. One of the obstacles is the lack of knowledge on the thermophysical rock properties. Subsurface thermal conditions as well as the production capacity and lifecycle of geothermal district heating plants largely depend, among other, on these properties. For the Danish Basin only few published data sets are available and mostly limited to thermal conductivity. Values of thermal diffusivity and specific heat capacity are mostly unknown. In order to overcome this gap, new laboratory measurements were conducted. Thermal conductivity and thermal diffusivity were measured on drill cores sections, while specific heat capacity was calculated based on these values and on rock density. Geological targets for the study are Mesozoic reservoir sandstones (Gassum Fm., Frederikshavn Fm., Haldager Sand Fm.), but also mud-/claystones and limestones of seal rocks (Fjerritslev Fm., Vedsted Fm.). The rock suite of 43 specimens studied was sampled in six wells. The measurements are performed under dry and saturated conditions using the optical scanning method. Furthermore, the values of conductivity and thermal diffusivity of the matrix were obtained by geometric mean averaging. Therefore, the ranges of characteristic values for each lithology were identified and a qualitative survey on the mineralogical composition of the samples on the basis of the matrix data was assembled. Further observations on the behaviour of thermal diffusivity and the relative application of the geometric mean model are also provided. This study was possible thanks to the "GEOTHERM" project, funded by the Innovation Fund Denmark.
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Violay, Marie. "Réservoirs hydro-géothermaux haute enthalpie : apport des propriétés pétrophysiques des basaltes." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2010. http://tel.archives-ouvertes.fr/tel-00591798.

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La géothermie est considérée comme une source d'énergie propre et inépuisable à échelle humaine. Actuellement, le rendement des centrales géothermiques est limité à l'exploitation de fluides de températures inférieures à 350 °C. L'association de l'activité tectonique et volcanique aux dorsales océaniques fait de l'Islande un lieu où l'extraction de fluides supercritiques (T> 375 °C) peut être envisagée. Cette exploitation pourrait multiplier par dix la puissance électrique délivrée par le système géothermal. Ces fluides peuvent-ils circuler dans la croûte océanique ? Ce travail propose de contraindre les observations géophysiques et de prédire le fonctionnement des réservoirs géo-hydrothermaux de très haute température par l'étude des propriétés physiques des basaltes. La première approche est focalisée sur l'étude de roches ayant accueilli une circulation hydrothermale par le passé. L'étude de ces roches au site ODP 1256, montre que leur porosité est associée à la présence de minéraux d'altération hydrothermale du facies amphibolite (T> 500 °C). La seconde approche a consisté à recréer, en laboratoire, les conditions des systèmes hydrothermaux, à très haute température, afin de prédire les propriétés mécaniques et électriques des basaltes dans ces conditions. Les résultats mécaniques indiquent que la transition fragile/ductile, souvent associée à une forte décroissance de perméabilité, intervient à une température d'environ 550 °C. La mise en place d'une cellule de mesure de la conductivité électrique de haute température a fourni les premiers résultats utiles à l'analyse des données géophysiques. Appliqués aux conditions de la croûte basaltique Islandaise, ces résultats indiquent que des fluides hydrothermaux pourraient circuler au moins transitoirement à l'état supercritique jusqu'à ~ 5 km de profondeur.
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Le, Lous Morgan. "Transferts de pression, de masse et d'énergie au sein des systèmes aquifères grandes profondeurs : application à la géothermie haute énergie." Thesis, Bordeaux 3, 2017. http://www.theses.fr/2017BOR30003.

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Utilisée depuis des milliers d’années sous ses manifestations naturelles par l’Homme, cette ressource fait l’objet d’une exploitation commerciale depuis seulement le XXe siècle, à destination du chauffage de bâtiments, de certains usages industriels ainsi que de la production d’électricité. La France compte parmi les pionniers concernant l’usage direct de la chaleur alors qu’aucune filière industrielle n’est véritablement effective pour la production d’électricité d’origine géothermique. Le projet sélectionné, intitulé FONGEOSEC, a pour objectif la conception et la réalisation d’un démonstrateur innovant préindustriel d’une centrale géothermique haute enthalpie exploité par cogénération d’électricité et de chaleur. Un travail de recherche et développement, conduit par un consortium composé de partenaires industriels et scientifiques, vise au lancement de la filière industrielle géothermique haute température en France. L’objectif général des travaux de thèse porte sur une meilleure compréhension globale des comportements hydrauliques, massiques et thermiques des formations profondes en réponse à une sollicitation anthropique de longue durée. Il s’agit d’identifier les paramètres clés régissant la réponse du complexe réservoir à la suite d’une exploitation géothermique. Un point particulier sera consacré à caractériser la part de chacun des modes de transport de chaleur en milieu poreux – conduction thermique, convection libre et forcée – dans l’établissement des performances thermiques de l’ouvrage considéré. Plusieurs dispositifs techniques d’exploitation seront proposés afin de réduire les incertitudes associées au système géothermique souterrain et garantir le succès du projet FONGEOSEC. L’impact des mécanismes thermo-convectifs au voisinage des forages d’exploitation géothermique de grande profondeur reste peu documenté, a fortiori dans le cas de dispositifs déviés adoptant une complétion particulière. L’outil retenu pour l’évaluation des performances du dispositif au contact de l’encaissant est la modélisation numérique distribuée. La variabilité des propriétés physiques de l’hydrosystème, de la conception et des modalités d’exploitation du dispositif sur le comportement hydraulique et thermique de l’exploitation est envisagée selon différentes approches développées à partir de modèles numériques 3D
Used for thousands of years under its natural manifestations, this resource has been commercially exploited since the twentieth century, for the heating of buildings, certain industrial uses and the production of electricity. France is one of the pioneers in the direct use of heat, whereas no industrial cluster is truly effective for the production of geothermal electricity. The selected project, FONGEOSEC, aims to design and produce an innovative pre-industrial demonstrator of a high enthalpy geothermal power plant operated by cogeneration of electricity and heat. A research and development project, led by a consortium of industrial and scientific partners, aims to launch the high-temperature geothermal industrial sector in France. The general objective of this thesis is to improve the understanding of the hydraulic, mass and thermal behavior of deep porous formations in response to long-term anthropogenic stress. The aim is to identify the key parameters governing the response of the reservoir complex related to geothermal operation. A particular point will be devoted to characterize the part of each mode of transport of heat in porous medium – thermal conduction, free and forced convection – in the establishment of the thermal performances of the geothermal power plant. Several technical operating devices will be proposed to reduce the uncertainties associated with the underground geothermal system and guarantee the success of the FONGEOSEC project. The impact of thermo-convective mechanisms in the vicinity of deep geothermal borehole remains poorly documented, especially in the case of deviated wells with a complex inner geometry. The evaluation of the hydraulic and thermal performances of the device, based on 3D numerical modeling, is conducted according to different approaches
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Limpasurat, Akkharachai. "Artificial Geothermal Energy Potential of Steam-flooded Heavy Oil Reservoirs." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8323.

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This study presents an investigation of the concept of harvesting geothermal energy that remains in heavy oil reservoirs after abandonment when steamflooding is no longer economics. Substantial heat that has accumulated within reservoir rock and its vicinity can be extracted by circulating water relatively colder than reservoir temperature. We use compositional reservoir simulation coupled with a semianalytical equation of the wellbore heat loss approximation to estimate surface heat recovery. Additionally, sensitivity analyses provide understanding of the effect of various parameters on heat recovery in the artificial geothermal resources. Using the current state-of-art technology, the cumulative electrical power generated from heat recovered is about 246 MWhr accounting for 90percent downtime. Characteristics of heat storage within the reservoir rock were identified. The factors with the largest impact on the energy recovery during the water injection phase are the duration of the steamflood (which dictates the amount of heat accumulated in the reservoir) and the original reservoir energy in place. Outlet reservoir-fluid temperatures are used to approximate heat loss along the wellbore and estimate surface fluid temperature using the semianalytical approaches. For the injection well with insulation, results indicate that differences in fluid temperature between surface and bottomhole are negligible. However, for the conventional production well, heat loss is estimated around 13 percent resulting in the average surface temperature of 72 degrees C. Producing heat can be used in two applications: direct uses and electricity generation. For the electricity generation application that is used in the economic consideration, the net electrical power generated by this arrival fluid temperature is approximately 3 kW per one producing pattern using Ener-G-Rotors.
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Wu, Xingru. "An investigation of partitioning tracers for characterizing geothermal reservoirs and predicting enthalpy production." Thesis, 2006. http://hdl.handle.net/2152/2672.

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Books on the topic "High enthalpy geothermal reservoirs"

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Dam, A. Ten. History and technology of the reinjection of low enthalpy oilfield brines in sandstone reservoirs in the Los Angeles Basin: Its application to the reinjection of low enthalpy geothermal brines into clastic reservoirs. Luxembourg: Commission of the European Communities, 1985.

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Book chapters on the topic "High enthalpy geothermal reservoirs"

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Stober, Ingrid, and Kurt Bucher. "Geothermal Systems in High-Enthalpy Regions." In Geothermal Energy, 227–56. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71685-1_10.

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Soengkono, Supri. "Airborne Magnetic Surveys to Investigate High Temperature Geothermal Reservoirs." In Advances in Geothermal Energy. InTech, 2016. http://dx.doi.org/10.5772/61651.

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"High and low enthalpy geothermal resources and potentials." In Central America, Two Volume Set, 829–900. CRC Press, 2012. http://dx.doi.org/10.1201/9780203947043-33.

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Birkle, Peter, and Jochen Bundschuh. "High and low enthalpy geothermal resources and potentials." In Central America. Taylor & Francis, 2007. http://dx.doi.org/10.1201/9780203947043.ch26.

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Nivolianitou, Z., E. Kondili, and G. Piperidis. "Risk analysis of high enthalpy fluid storage in geothermal power systems." In Safety and Reliability – Safe Societies in a Changing World, 1743–47. CRC Press, 2018. http://dx.doi.org/10.1201/9781351174664-218.

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PINE, ROBERT J., and DAVID A. C. NICOL. "Analytical and Numerical Modeling of High Pressure Fluid-Rock Mechanical Interaction in HDR Geothermal Energy Reservoirs." In Surface and Underground Project Case Histories, 523–46. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-08-042068-4.50028-4.

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Hashida, Toshiyuki, and Toru Takahashi. "Supercritical Water/Rock Interactions and Generation of Artificial Geothermal Reservoirs in Deep-Seated High Temperature Rock Masses." In Coupled Thermo-Hydro-Mechanical-Chemical Processes in Geo-Systems - Fundamentals, Modelling, Experiments and Applications, 661–66. Elsevier, 2004. http://dx.doi.org/10.1016/s1571-9960(04)80115-0.

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McElroy, Michael B. "Earth Heat and Lunar Gravity Geothermal And Tidal Energy." In Energy and Climate. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190490331.003.0017.

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To this point, we have discussed the current status and future prospects of energy from coal, oil, natural gas, nuclear, wind, solar, and hydro. With the exception of the contribution from nuclear, the ultimate origin of the energy for all of these sources is the sun— energy captured millions of years ago by photosynthesis in the case of the fossil fuels (coal, oil, and natural gas), energy harvested from contemporary inputs in the case of wind and solar. We turn now to a discussion of the potential for generation of electricity from geothermal sources and ocean tides. Decay of radioactive elements in the Earth’s interior provides the dominant source for the former; energy extracted from the gravitational interaction of the Earth and moon is the primary source for the latter. There are two main contributions to the energy reaching the surface from the Earth’s interior. The first involves convection and conduction of heat from the mantle and core. The second reflects the contribution from decay of radioactive elements in the crust, notably uranium, thorium, and potassium. The composite geothermal source, averaged over the Earth, amounts to about 8 × 10– 2 W m– 2, approximately 3,000 times less than the energy absorbed from the sun. As a consequence of the presence of the internal source, temperatures increase at an average rate of about 25°C per kilometer as a function of depth below the Earth’s surface. The rate of increase is greater in regions that are tectonically active, notably in the western United States and in the region surrounding the Pacific Ocean (the so- called Ring of Fire) — less in others. Of particular interest in terms of harvesting the internal energy source to produce electricity are hydrothermal reservoirs, subsurface environments characterized by the presence of significant quantities of high- temperature water formed by exposure to lava or through contact with unusually hot crustal material. The water contained in hydrothermal reservoirs is supplied for the most part by percolation from the surface through overlying porous rock. The conditions required for production of these hydrothermal systems are relatively specialized.
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Conference papers on the topic "High enthalpy geothermal reservoirs"

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Ambriz Díaz, Victor M., Carlos Rubio-Maya, Juan M. Belman-Flores, Edgar Pastor Martínez, and J. Jesús Pacheco Ibarra. "Analysis of Alternatives for a Multiproduct System Using Geothermal Energy Under Cascade Utilization Concept." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52217.

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Geothermal energy is one of the no fossil energy sources that has been utilized mainly for electricity generation, by using the so-called high enthalpy geothermal resource. Nevertheless, low and medium enthalpy geothermal resources are most abundant, but utilized in less extension due mainly to technological barriers or the thermal match between temperature of energy resources and the technology requirements. This work presents the analysis of alternatives for integrating a multiproduct system, producing sequentially electricity, ice and useful heating. For the purpose, the cascade utilization concept is considered for geothermal energy, utilizing low and medium enthalpy resources. To carry out the analysis, it is assumed availability of geothermal hot water with different temperatures typical of already drilled geothermal wells or studied geothermal reservoirs in Mexico. In order to produce electricity, ice and heating for further use (dehydration process or greenhouse heat supply), three cascade levels are proposed to operate sequentially and simultaneously. For electricity generation Organic Rankine Cycles are considered, and for ice production, thermally activated technologies are the best candidates. If necessary, supplementary heat is provided as a mean of geothermal energy upgrade; among the technologies to integrate are parabolic trough collectors, linear Fresnel collectors and biomass boiler. Particularly, with regard to Organic Rankine Cycles, are considered the ones that works with geothermal hot water in the range of 90 °C to 125 °C with rated power output between 25 kWe to 250 kWe. For ice production, two type of machines are under study, i.e. single-effect absorption machines with coefficient of performance around 0.6, and half-effect absorption machines with a value around 0.3 for the coefficient of performance. Absorption machines can be activated thermally with geothermal hot water with temperature in the range of 70 °C to 90 °C. Afterwards, a number of alternatives are proposed to integrate the multiproduct system, which are analyzed and compared both from the energy and economic point of view, obtaining in this way the main energy interactions of the systems, including electricity produced, amount of ice produced and heat availability. In the model, economic indicators are evaluated, obtaining for each alternative the capital cost, simple payback and net present value. Results shows quantitatively that cascade use of geothermal energy is a viable concept to increase the use of low and medium enthalpy geothermal resources with increase of energy performance and improvement of economical profit.
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De Montleau, P., F. Felici, M. Casini, and M. Cei. "Flow Simulation and History Matching of a High Enthalpy Geothermal Reservoir: The Larderello Case Study (Italy)." In 1st Geoscience & Engineering in Energy Transition Conference. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202021005.

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Soyer, W., R. Mackie, A. Pavesi, S. Hallinan, and F. Miorelli. "Multi-physics Imaging of a High Enthalpy Geothermal Field: the Darajat Case." In First EAGE/IGA/DGMK Joint Workshop on Deep Geothermal Energy. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201802930.

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Lvov, Serguei N., Derek M. Hall, and Isaac K. Gamwo. "Molecular Statistical Thermodynamics to Model Quartz Solubility in Ultra High-Enthalpy Geothermal Systems." In Annual International Conference on Geological and Earth Sciences. Global Science and Technology Forum (GSTF), 2015. http://dx.doi.org/10.5176/2251-3353_geos15.44.

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Brogi, A., A. Dini, P. Fulignati, D. Liotta, G. Ruggieri, and A. Sbrana. "Migration of fluids in the Boccheggiano-Montieri (southern Tuscany, Italy) fossil geothermal system: insights for the Larderello high-enthalpy active geothermal field." In 70th EAGE Conference and Exhibition - Workshops and Fieldtrips. European Association of Geoscientists & Engineers, 2008. http://dx.doi.org/10.3997/2214-4609.201405053.

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Shenghai, Jin, Yao Zujin, and Yin Miying. "The Origin of High-Enthalpy Geothermal of Non-Volcanic Environment---As a Case Study of Yangbajing Geothermal Field at Qinghai-Tibet Plateau." In 2009 International Conference on Energy and Environment Technology. IEEE, 2009. http://dx.doi.org/10.1109/iceet.2009.223.

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Garcia Estrada, G. H. "Relationship between Regional and Local Heat Flow in a High Enthalpy Geothermal Field-los Azufres, Mich, Mexico." In 5th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1997. http://dx.doi.org/10.3997/2214-4609-pdb.299.314.

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Shoeibi Omrani, Pejman, Kaj Van der Valk, Wim Bos, Eduard Nizamutdinov, Laurens Van der Sluijs, Joren Eilers, Hajo Pereboom, Koen Castelein, and Frank Van Bergen. "Overview of Opportunities and Challenges of Electrical Submersible Pumps ESP in the Geothermal Energy Production Systems." In SPE Gulf Coast Section Electric Submersible Pumps Symposium. SPE, 2021. http://dx.doi.org/10.2118/204524-ms.

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Abstract The electrical submersible pump (ESP) is an essential and critical component in most low-enthalpy geothermal wells where high volumes of hot (up to 120°C) and harsh geothermal brine is required to be transported to the surface. Despite a great deal of knowledge and experience in the design and operation of ESP in the petroleum and water sector, reliability of geothermal ESPs requires further improvement. Frequent failures have been observed that resulted from sub-optimum design, installation and operation of these systems which made the lifetime of them shorter than the expected 5-7 years. In this paper we summarize the typical conditions in low-enthalpy geothermal systems (specifically in the Netherlands) and several observed reliability challenges. Lastly, we will discuss the gaps between the petroleum, water and geothermal practices and identify a list of R&D opportunities to better understand the geothermal ESP failures and improve ESP reliability. Testing ESPs in realistic geothermal conditions and a proper monitoring of the well-ESP system is crucial to improve the reliability of existing ESP designs and can enable the development of new geothermal ESP system designs.
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Ma, YongKun. "The Effect of High-Geothermal Field on the Diagenesis and Pore Evolution of Sandstone Reservoirs in Baiyun Sag, Pearl River Mouth Basin." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2019. http://dx.doi.org/10.2523/iptc-19477-ms.

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Vinhal, Andre, Jawad Azeem, and Karen Pedersen. "Modeling of Compositional Grading in Heavy Oil Fields." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205887-ms.

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Abstract Field data for the compositional variation with depth in five petroleum reservoirs have been analyzed including one rich in asphaltenes with a very high compositional gradient. The data follows the well-known pattern with an increasing concentration of heavy components with depth. The observed compositional variation is higher than what could be explained by gravity segregation alone. An enthalpy term was added to take into account that the components have different preferences for residing at a higher or a lower temperature. It was found necessary to modify the enthalpy term to account for the impact of fluid viscosity and concentration of aromatic components on the relative rate at which smaller and larger molecules move in a fluid column. With this modification, a good match was seen of the compositional variation in the five reservoirs initially analyzed. The method was successfully tested on three other reservoirs, not part of the initial analysis, one of which had a fluid column of 970 m.
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Reports on the topic "High enthalpy geothermal reservoirs"

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Wannamaker, Philip E., James E. Faulds, and Burton Mack Kennedy. Integrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1457571.

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