Multiple Reservoirs in the Mofete Field, Naples, Italy

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Mofete field, located near Naples, in southern Italy, lies within the large Campi Flegrei caldera. Drilling for geothermal fluids was carried out unsuccessfully in 1939-1954. AGIP, in joint venture with the national utility ENEL, after intensive exploration efforts, resumed drilling at the end of 1978; several new deep wells indicate the presence of a water dominated field in Mofete with three reservoirs (only the shallowest of which was reached by previous wells). The deepest aquifer, tapped by well Mofete 5 at the depth of about 2700 m, contains hypersaline fluids (about 516000 ppm TDS at atmospheric conditions corresponding to about ... continued below

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Carella, R. & Guglielminetti, M. December 15, 1983.

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Mofete field, located near Naples, in southern Italy, lies within the large Campi Flegrei caldera. Drilling for geothermal fluids was carried out unsuccessfully in 1939-1954. AGIP, in joint venture with the national utility ENEL, after intensive exploration efforts, resumed drilling at the end of 1978; several new deep wells indicate the presence of a water dominated field in Mofete with three reservoirs (only the shallowest of which was reached by previous wells). The deepest aquifer, tapped by well Mofete 5 at the depth of about 2700 m, contains hypersaline fluids (about 516000 ppm TDS at atmospheric conditions corresponding to about 150000 ppm in the reservoir) with a bottom hole temperature of about 360{degrees}C. The intermediate level, reached by well Mofete 2 at 1900 m depth, is characterized by low salinity fluids (about 38000 ppm TDS at the surface corresponding to 18000 ppm calculated in the reservoir) with a reservoir temperature of 340{degrees}C. The uppermost reservoir, tapped by wells Mofete 1, 3D, 7D, 8D and 9D ranges between 550 and 1500 m depth and has water with salinity ranging from 40000 to 76000 ppm TDS at the surface corresponding to 28000 to 52000 ppm in the reservoir with a bottom temperature of 230-308{degrees}C. The uppermost aqifer is in fractured volcanic rocks while the other two are in a metamorphosed volcano-sedimentary complex. Long term production and injection tests will be carried out shortly to ascertain the main characteristics of the field.

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  • Proceedings, Ninth Workshop Geothermal Reservoir Engineering, Stanford University, Stanford Calif., December 13-15, 1983

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  • Report No.: SGP-TR-74-5
  • Grant Number: AT03-80SF11459
  • Office of Scientific & Technical Information Report Number: 889480
  • Archival Resource Key: ark:/67531/metadc876255

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  • December 15, 1983

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  • Sept. 21, 2016, 2:29 a.m.

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  • Oct. 31, 2016, 7:02 p.m.

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Carella, R. & Guglielminetti, M. Multiple Reservoirs in the Mofete Field, Naples, Italy, article, December 15, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc876255/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.