Download Advances in European Geothermal Research: Proceedings of the by A. Strub (auth.), A. S. Strub, P. Ungemach (eds.) PDF

By A. Strub (auth.), A. S. Strub, P. Ungemach (eds.)

The first main issue in power costs used to be unquestionably a robust stimulus for the involvement of the fee of the eu groups in study and improvement on replacement power assets. certainly, the necessity to conquer problems confronted via the neighborhood as an entire, rather these as a result of its critically unbalanced power provide, made a standard group procedure look specifically apt. This reasoning additionally applies to power R&D, making an allowance for that responses to the obstacle can be not just political or financial, but in addition clinical. 4 years have handed because the determination of the Council of Ministers to release the 1st neighborhood strength examine and improvement Programme, facing geothermal strength, solar power, hydrogen construction and utili­ sation, strength conservation and effort structures research. A seminar on geo­ thermal strength was once held years in the past to document on paintings in growth on the half-way degree of the four-year programme. the second one foreign seminar, pronounced during this quantity, was once arrang­ ed so that it will provide a chance to ascertain the ultimate consequence of this neighborhood funding in learn in geothermal strength. This complaints quantity for this reason has major goals: - to offer an review of the result of the neighborhood geothermal programme, through eighty three formal studies describing the person study programmes; - to teach how the group examine programme suits into the final context of nationwide and overseas learn on geothermal power, by way of together with the displays of six visitor audio system who brought the classes and gave keynote addresses.

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Read Online or Download Advances in European Geothermal Research: Proceedings of the Second International Seminar on the Results of EC Geothermal Energy Research, held in Strasbourg, 4–6 March 1980 PDF

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Additional resources for Advances in European Geothermal Research: Proceedings of the Second International Seminar on the Results of EC Geothermal Energy Research, held in Strasbourg, 4–6 March 1980

Sample text

The favourable area extends : - 47- - on the left side of the Rhine, over 300 km 2 , covering the Alsatian potash basin and the Graben of Dannemarie, between the Western limit of the Rhine Graben and the horst of Mulhouse. - on the right side of the Rhine, over 50 km2 , from Breisach to Mullheim, between the eastern limit of the Rhine Graben and the river Rhine. North of a line Colmar-Freiburg, the Great Oolite becomes impermeable, as it was shown by an oil exploration well in Artzenheim in september 1979.

But experience has confirmed the third thesis (muLtipLe fracturing). Whether at Los ALamos or in CornwaLL, in the Massif CentraL at Mayet de Montagne or in Bavaria at FaLkenberg or Urach, that monument to the gLory of dry geothermaL energy, aLL fieLd tests have invoLved the re-opening of existing fractures and thus confirmed the validity of the multi fracture model and of volume fracturing. What other lessons can be drawn from these experiments? An audacious test at Los Alamos has succeeded in creating a connection at a depth of 3000 m, with a heat-exchange area of 8000 m2 recently increased to 80 000 m2, with a production of 5 MWt at a stabilized temperature of 1600 C.

Only few recent DST data (around 20) and thermal water samples (around 40) give accurate information about physical and chemical caracteristics of geothermal fluids in the area. Nevertheless, and with the help of new analytical process, developped by BRGM on a EC contract and concerning 2000 oil bore holes, it was possible to establish from existing BHT and DST data, significant temperature distribution and geothermal gradient calculation. Areas with specific behaviour, in relation with deep basin tectonics, could be outlined.

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