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Influence of Major Fault Zones on 3-d Coupled Fluid and Heat Trans...

By: M. Scheck-wenderoth; V. Noack; M. Cacace; Y. Cherubini

Description: University of Potsdam, Institute of Earth and Environmental Science, Potsdam, Germany. To quantify the influence of major fault zones on the groundwater and thermal field, 3-D finite-element simulations are carried out. Two fault zones – the Gardelegen and Lausitz escarpments – have been integrated into an existing 3-D structure of the Brandenburg region in northeastern Germany. Different geological scenarios in terms of modelled fault permeability have ...

Alt-Epping, P. and Zhao, C.: Reactive mass transport modelling of a three-dimensional vertical fault zone with a finger-like convective flow regime, J. Geochem. Explor., 106, 8–23, 2010.; Amante, C. and Eakins, B. W.: ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, NOAA Technical Memorandum NESDIS NGDC-24, 19 pp., 2009.; Bächler, D., Kohl, T., and Rybach, L.: Impact of graben-parallel faults on hydrothermal convection – Rhine Graben case s...

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Assessing the Prospective Resource Base for Enhanced Geothermal Sy...

By: E. Trumpy; A. Manzella; M. P. D. Pluymaekers; J.-d. Van Wees; T. Boxem; J. Limberger; P. Calcagno

Description: Department of Earth Sciences, Utrecht University, Utrecht, the Netherlands. In this study the resource base for EGS (enhanced geothermal systems) in Europe was quantified and economically constrained, applying a discounted cash-flow model to different techno-economic scenarios for future EGS in 2020, 2030, and 2050. Temperature is a critical parameter that controls the amount of thermal energy available in the subsurface. Therefore, the first step in ass...

Agemar, T., Schellschmidt, R., and Schulz, R.: Subsurface temperature distribution in Germany, Geothermics, 44, 65–77, 2012.; Amante, C. and Eakins, B. W.: ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, NOAA Technical Memorandum NESDIS NGDC-24, http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/docs/ETOPO1.pdf, 2009.; Artemieva, I. M.: The Lithosphere: An Interdi...

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Proposal of a Consistent Framework to Integrate Geothermal Potenti...

By: G. Falcone

Description: Department of Geothermal Engineering and Integrated Energy Systems, Institute of Petroleum Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, Germany. The classification of geothermal resources is dependent on the estimate of their corresponding geothermal potential, so adopting a common assessment methodology would greatly benefit operators, investors, government regulators and consumers.

Several geothermal classification s...

Task Force on the Application of UNFC-2009: Draft Specifications for Application of UNFC-2009 to Renewable Energy Resources, presented for public comment on 12 June 2014, available at: http://www.unece.org/fileadmin/DAM/energy/se/pdfs/UNFC/unfc2009_RE_Specs_publcomm_14/RE_Specs_12.06.2014.pdf, downloaded on 16 June 2014.; ECE – Economic Commission for ...

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Effectiveness of Acidizing Geothermal Wells in the South German Mo...

By: S. Schumacher; R. Schulz

Description: Leibniz Institute for Applied Geophysics, Stilleweg 2, 30655 Hanover, Germany. In Germany, many hydro-geothermal plants have been constructed in recent years, primarily in the region of Munich. As the host formation here mainly consists of carbonates, nearly all recently drilled wells have been acidized in order to improve the well yield. In this study, the effectiveness of these acid treatments is analyzed with respect to the amount of acid used and the...

Gdanski, R.: The symmetry of wormholing, E&P, 2001.; Fournier, R. O. and Rowe, J. J.: The solubility of amorphous silica in water at high temperatures and high pressures, Am. Mineral., 62, 1052–1056, 1977.; Chigira, M. and Watanabe, M.: Silica precipitation behavior in a flow field with negative temperature gradients, J. Geophys. Res., 99, 15539–15548, 1994.; Allen, T. O. and Roberts, A. P.: Production Operations, Vol. 2, Oil & Gas Consultants International, Inc., Tulsa,...

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Reservoir Characterization of the Upper Jurassic Geothermal Target...

By: A. E. Götz; I. Sass; S. Homuth

Description: Züblin Spezialtiefbau GmbH, Ground Engineering, Europa Allee 50, 60327 Frankfurt a. M., Germany. The Upper Jurassic carbonates of the southern German Molasse Basin are the target of numerous geothermal combined heat and power production projects since the year 2000. A production-orientated reservoir characterization is therefore of high economic interest. Outcrop analogue studies enable reservoir property prediction by determination and correlation of l...

Abdulagatova, Z., Abdulagatov, I. M., and Emirov, V. N.: Effect of temperature and pressure on the thermal conductivity of sandstone, Int. J. Rock Mech. Min., 46, 1055–1071, 2009.; Bär, K., Arndt, D., Fritsche, J.-G., Götz, A. E., Kracht, M., Hoppe, A., and Sass, I.: 3-D-Modellierung der tiefengeothermischen Potenziale von Hessen: Eingangsdaten und Potenzialausweisung, Z. Dt. Ges. Geowiss., 162, 371–388, 2011.; Birner, J., Fritzer, T., Jodocy, M., Savvatis, A., Schneider...

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Overcoming Challenges in the Classification of Deep Geothermal Pot...

By: G. Falcone; K. Dzebisashvili; K. Breede

Description: Dept. of Geothermal Engineering and Integrated Energy Systems, Institute of Petroleum Engineering, Clausthal University of Technology, Clausthal, Germany. The geothermal community lacks a universal definition of deep geothermal systems. A minimum depth of 400 m is often assumed, with a further sub-classification into middle-deep geothermal systems for reservoirs found between 400 and 1000 m. Yet, the simplistic use of a depth cut-off is insufficient to u...

AGRCC: Australian Geothermal Reporting Code Committee: Geothermal lexicon for resources and reserves definition and reporting, 2nd edn. Australian Geothermal Reporting Code Committee, Adelaide, p. 67, 2010.; Atkins Ltd: Deep Geothermal Review Study, Version 5.0, 21 October 2013.; Baria, R., Bennett, T., Macpherson-Grant, G., Baumgaertner, J., and Jupe, A.: Cornish Rocks – Hotting Up? European Geothermal Congress (EGC) 2013, Pisa, Italy, 3–7 June 2013.; Barnet, P.: Large ...

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Stored-heat Assessments: a Review in the Light of Field Experience...

By: M. A. Grant

Description: MAGAK, 14A Rewi Rd, Auckland 1023, New Zealand. Stored-heat or volumetric assessments of geothermal resources are appealingly simple: the resource being exploited is heat. A stored-heat calculation simply computes the amount of heat in the resource, similarly to computing the amount of ore in an ore body. The method has theoretical support in numerical simulations of resource production. While there are significant unknowns in any resource, some of thes...

MIT: The future of geothermal energy, 2006.; Garg, S. K. and Combs, J.: Appropriate use of USGS volumetric heat in place method and Monte Carlo calculations, Proc, 35th Workshop on geothermal reservoir engineering, Stanford University, 2010.; Garg, S. K. and Combs, J.: A re-examination of USGS volumetric heat in place, method, Proc, 36th Workshop on geothermal reservoir engineering, Stanford University, 2011.; Grant, M. A. and Garg, S. K.: Recovery factor for EGS, Proc, ...

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Empirical Relations of Rock Properties of Outcrop and Core Samples...

By: S. L. Philipp; D. Reyer

Description: Georg August University of Göttingen, Geoscience Centre, Department of Structural Geology and Geodynamics, Germany. Information about geomechanical and physical rock properties, particularly uniaxial compressive strength (UCS), are needed for geomechanical model development and updating with logging-while-drilling methods to minimise costs and risks of the drilling process. The following parameters with importance at different stages of geothermal exploi...

Baud, P., Zhu, W., and Wong, T.-f.: Failure mode and weakening effect of water on sandstone, J. Geophys. Res.-Sol. Ea., 105, 16371–16389, 2000.; Aggistalis, G., Alivizatos, A., Stamoulis, D., and Stournaras, G.: Correlating uniaxial compressive strength with Schmidt hardness, point load index, Young's modulus, and mineralogy of gabbros and basalts (Northern Greece), Bull. Int. Assoc. Eng. Geol., 54, 3–11, 1996.; Betz, D., Führer, F., Greiner, G., and Plein, E.: Evolution...

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Geothermal Resources and Reserves in Indonesia: an Updated Revisio...

By: A. Fauzi

Description: PT. Geo Power Indonesia, Menara Palma #15-02A-B Kuningan, 12950 Jakarta, Indonesia. More than 300 high- to low-enthalpy geothermal sources have been identified throughout Indonesia. From the early 1980s until the late 1990s, the geothermal potential for power production in Indonesia was estimated to be about 20 000 MWe. The most recent estimate exceeds 29 000 MWe derived from the 300 sites (Geological Agency, December 2013).

This resource esti...

Fauzi, A.: Geothermal Resources and Reserves in Indonesia: A Revision; in: Proceedings, 13th Indonesia International Geothermal Convention & Exhibition 2013, Jakarta, Indonesia, 12–14 June, 2013b.; API News-Sikumbang, Let's Investing Together on Geothermal; in API (Indonesian Geothermal Association) News No. 8 – October 2012, p.5., 2012.; Australian Geothermal Code Committee: Geothermal Lexicon For Resources and Reserves Definition and Reporting, Edition 2, Adelaide, 201...

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Rearrangement of Stresses in Fault Zones – Detecting Major Issues ...

By: G. Ziefle

Description: Leibniz Institute for Applied Geophysics (LIAG), Stilleweg 2, 30655 Hannover, Germany. The South German Molasse Basin provides favourable conditions for geothermal plants. Nevertheless, micro-seismic events occur in the vicinity of the geothermal Unterhaching Gt2 well and seem to be caused by the geothermal plant.

The injection and production are located in an existing fault system. The majority of seismic events takes place at a horizontal di...

Hillis, R.: Pore pressure/stress coupling and its implications for seismicity, Explor. Geophys., 31, 448–454, 2000.; BStWIVT – Bayerisches Staatsministerium für Wirtschaft, Infrastruktur, Verkehr und Technologie: Bayerischer Geothermieatlas – Hydrothermale Energiegewinnung, 93 pp., München, 2010.; Byerlee, J. D.: Friction of rocks, Pure Appl. Geophys., 116, 615–626, 1978.; Ferrill, D. A. and Morris, A. P.: Dilational normal faults, J. Struct. Geol., 25, 183–196, 2003.; F...

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Science; Numbered Serries Volume: 40 July-Dec 1914

By: Michels, John, 1875- edt; American Association for the Advancement of Science

A weekly record of scientific progress.; Edited by J. Michels; Published: Cambridge, Mass. : Science Company, Moses King, 1883-; Lancaster, Pa. : Science Press, -1944; Lancaster, Pa. : American Association for the Advancement of Science, 1945-; Washington

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Comptes Rendus Hebdomadaires des Seances de L'Academie des Science...

By: Académie des Sciences (France); Centre National de la Recherche Scientifique (France)

CIS abstracts; Vols. 1 (1835)-31 (1850). 1 v.; Vols. 32 (1851)-61 (1865). 1 v.; Vols. 62 (1866)-91 (1880). 1 v.; Vols. 92 (1881)-121 (1895). 1 v.; Vols. 122 (1896)-151 (1910). 1 v.; Vols. 212 (1941)-241 (1955). 1 v; The proceedings for the period prior to 1835 are contained in: Acad‚mie des sciences (France). ProcŠs-verbaux des s‚ances de l'Acad‚mie tenues depuis la fondation de l'Institut jusqu'au mois d'ao–t 1835; Split into: Comptes rendus hebdomadaires des s‚ances de...

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Museum Bulletin

By: New York State Museum

Description: Title from cover

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On the Glacial and Inter-glacial Thermohaline Circulation and the ...

By: L. Brodeau; K. Döös; S. Falahat; M. Ballarotta

Description: Department of Physical Geography and Quaternary Geology, Bolin Centre for Climate Research, Stockholm University, 106 91 Stockholm, Sweden. The change of the thermohaline circulation (THC) between the Last Glacial Maximum (LGM, ≈ 21 kyr ago) and the present day climate are explored using an Ocean General Circulation Model and stream functions projected in various coordinates. Compared to the present day period, the LGM circulation is reorganis...

Adkins, J. F. and Schrag, D. P.: Pore fluid constraints on deep ocean temperature and salinity during the Last Glacial Maximum, Geophys. Res. Lett., 28, 771–774, doi:10.1029/2000GL011597, 2001.; Adkins, J. F., Mcintyre, K., and Schrag, D. P.: The Salinity, Temperature, and δ18O of the Glacial Deep Ocean, Science, 298, 1769–1773, doi:10.1126/science.1076252,...

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Abhandlungen Der Königlichen Akademie Der Wissenschaften in Berlin

By: Deutsche Akademie Der Wissenschaften Zu Berlin

Description: Jahre 1869 (publ. 1870) issued in 2 vols

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New York State Museum Bulletin

By: New York State Museum

Description: Title from cover

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Abhandlungen Der Königlichen Akademie Der Wissenschaften in Berlin

By: Deutsche Akademie Der Wissenschaften Zu Berlin

Description: Jahre 1869 (publ. 1870) issued in 2 vols

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Nature; Volume: 2 May-Nov. 1870

By: Lockyer, Joseph Norman, Sir 1836-1920, Editor

International weekly journal of science--Cover; Founded and for many years edited by Sir J.N. Lockyer; Latest issue consulted: Vol. 359, no. 6393 (24 Sept. 1992); CD-ROM and print supplements accompany many numbers; Vol. 229-246, Jan. 1971-Dec. 1973, issu

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Comptes Rendus Hebdomadaires des Seances de L'Academie des Science...

By: Académie des Sciences (France); Centre National de la Recherche Scientifique (France)

CIS abstracts; Vols. 1 (1835)-31 (1850). 1 v.; Vols. 32 (1851)-61 (1865). 1 v.; Vols. 62 (1866)-91 (1880). 1 v.; Vols. 92 (1881)-121 (1895). 1 v.; Vols. 122 (1896)-151 (1910). 1 v.; Vols. 212 (1941)-241 (1955). 1 v; The proceedings for the period prior to 1835 are contained in: Acad‚mie des sciences (France). ProcŠs-verbaux des s‚ances de l'Acad‚mie tenues depuis la fondation de l'Institut jusqu'au mois d'ao–t 1835; Split into: Comptes rendus hebdomadaires des s‚ances de...

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Kungl. Svenska Vetenskapsakademiens Handlingar

By: Kungl. Svenska Vetenskapsakademien

Description: Vols. for 1813-1854 lack vol. numbering

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