Petrologic Evaluation of the Southern Part of Berlin Geothermal Field, El Salvador

Petrologic data has been used to determine the stratigraphical changes, mineral zoning, thermal history and permeability in Berlin geothermal field. Petrographic and mineralogical analyses showed that the caprock at wells TR-17 and TR-18 is found at higher elevation (500 masl to sea level), composed of altered fine tuff and ignimbritic deposits, confirming the vertical displacement of the Berlin caldera.Past and present thermal regimes were identified using microthermometry of fluid inclusions in different crystals. Measurement at depths indicated a temperature reversal of 256 258C in wells TR-17 and TR-18, where temperature of homogenization (Th) obtained a maximum temperature of 346C.Geochemical data was plotted in variation diagrams to see the trend of the major oxides and relate to the hydrothermal alteration processes.This paper will focus on the five production wells (TR-17, TR-17A, TR-17B, TR-18 and TR-18A) at the southern part of the field.

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Additional Info

Field Value
Citation Date 2010-01-01T00:00:00

Harvest Information

Original ID 8a337099-e3cd-42cc-9597-1ad8824c88c0
Index Date 2015-11-18T22:56:10
Original Format ISO-USGIN
Original Version 1.2

Author

Name Elizabeth Torio Henriquez
Organization World Geothermal Congress
Email horne@stanford.edu

Geographic Extent

North Bound 13.5070511
South Bound -88.5190774
East Bound -88.5374664
West Bound 13.4890447