SAN CUGAT GEOTHERMAL PROJECT
ENHER is attempting to exploit the geothermal field in San Cugat del Valles, Spain. The project had the following objectives : item"-" to demonstrate the possibility of exploiting the geothermal granitic storage, item"-" to demonstrate the techno-economic feasibility of heating greenhouses in the area with geothermal energy, item"-" to study the variations which occur in the storage under short and long time test as well as the variations in temperature and chemical composition, item"-" to construct a preliminary model of the behaviour of the reservoir.par The following work was carried out: Hydrogeological surveys of the area, short time tests with various flow-rates, long time tests, determinations of the bubble point pressure, geochemical follow-up, interpretation and simulation by adapting a model of a single vertical fracture and a specific model on impermeable barriers and a market study. The most important results are: It was possible to get good calibrations on the two models tested, then, a simulation test during a long period was carried out with excellent results. From the geochemical point of view, the composition of the pumped water shows notable stability both in time and in relation to the volume of extracted water. Tritium contents indicate waters infiltrated before 1952. No sign of mixing with more recent waters was detected. The stability noted in all the geochemical isotopical data, allows to conclude that the geothermal field of St. Cugat is a relatively extensive geothermal resource which could be exploited at least for medium temperature utilisation with flow-rates more than 50 1/s without any major problems. A potential market for ornamental flowers was found in the surrounding area of the geothermal field St. Cugat.
Bibliographic Reference: EUR 11152 EN, ES (1987) MF, PP 128, ECU 8.00, BLOW-UP COPY, ECU 16.25, AVAILABILITY: EUROFFICE, LUXEMBOURG, BP 1003, GDL
Availability: Can be ordered online
Record Number: 1989126090900 / Last updated on: 1989-05-01
Available languages: en,es