Temperature model and tracer test analysis for the Ribeira Grande geothermal system, São Miguel Island, Azores

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dc.contributor Jarðhitaskóli Háskóla Sameinuðu þjóðanna is
dc.contributor.author Rangel, Maria da Graça Vaz de Medeiros is
dc.date.accessioned 2015-10-15T13:53:32Z
dc.date.available 2015-10-15T13:53:32Z
dc.date.issued 2015
dc.identifier.issn 1670-7427
dc.identifier.uri http://hdl.handle.net/10802/10535
dc.description Í: Geothermal training in Iceland 2014, s. 615-642 is
dc.description Myndefni: kort, gröf, töflur is
dc.description.abstract On São Miguel Island (Azores - Portugal) EDA Renováveis, S.A., exploits the resources of the Ribeira Grande geothermal field, a 240ºC liquid-dominated reservoir, and operates two binary ORC (organic Rankine cycle) geothermal power plants, Ribeira Grande and Pico Vermelho, with a combined capacity of 23 MWe. At present, the production from the geothermal resource represents 43% of the total power production of the island and 22% of the archipelago of the Azores. In 2008, a numerical model of the Ribeira Grande geothermal reservoir was recalibrated using up-to-date temperature, pressure, production and tracer test data. Forecasts of reservoir performance under several injection configurations were made, providing important information on how power production may be maximized, while minimizing the potential cooling impact caused by the return of injected water. Based on these forecasts, EDA Renováveis, S.A., decided to relocate the injection area in the Pico Vermelho sector, by drilling new injection wells farther from the production area. is
dc.description.abstract The present work was developed under the scope of the final project for the Geothermal Training Programme of the United Nations University, in Iceland. An updated model of the temperature and pressure distribution in the Pico Vermelho sector of the Ribeira Grande geothermal field was developed based on warm-up temperature and pressure data from new wells PV9, PV10, PV11 and RG5, suggesting some continuity of the reservoir to the northeast, as previously indicated by AMT/MT surveys. A simulation and interpretation of the tracer test data conducted in the same sector of the field in 2007-2008, using the programs of the software package ICEBOX, is also part of this final project. The results show an overall strong hydraulic connection between the injection and production wells in this sector of the geothermal field. is
dc.format.extent 28 s. is
dc.language.iso en
dc.publisher United Nations University is
dc.publisher Orkustofnun is
dc.relation.ispartofseries United Nations University., UNU Geothermal Training Programme, Iceland. Report ; 2014 : 29
dc.relation.uri http://os.is/gogn/unu-gtp-report/UNU-GTP-2014-29.pdf
dc.subject Jarðhiti is
dc.subject Jarðhitakerfi is
dc.subject Portúgal is
dc.subject Asoreyjar is
dc.title Temperature model and tracer test analysis for the Ribeira Grande geothermal system, São Miguel Island, Azores en
dc.title.alternative Geothermal training in Iceland en
dc.type Tímaritsgrein is
dc.identifier.gegnir 991006292699706886


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