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Geothermal water-rock equilibria at Palinpinon, Philippines: Insights from major reactive gas constituents. (Articolo in rivista)

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Geothermal water-rock equilibria at Palinpinon, Philippines: Insights from major reactive gas constituents. (Articolo in rivista) (literal)

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Gherardi F. [1], Magro G. [1], Bayon F. E. B.[2] (2013)
Geothermal water-rock equilibria at Palinpinon, Philippines: Insights from major reactive gas constituents.
in Procedia earth and planetary science; Elsevier, Amsterdam (Paesi Bassi)
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Paper presented at Proceedings of the Fourteenth International Symposium on Water-Rock Interaction, WRI 14, Avignon, France, 9-14 June 2013. (literal)

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[1] Consiglio Nazionale delle Ricerche (CNR), Istituto di Geoscienze e Georisorse (IGG), Via G.Moruzzi 1, Pisa, 56124, Italy [2] Energy Development Corporation (EDC), Ortigas Business Center, Philippines (literal)

Titolo

Geothermal water-rock equilibria at Palinpinon, Philippines: Insights from major reactive gas constituents. (literal)

Abstract

Eleven producing wells of the Palinpinon geothermal field have been monitored for major reactive gas components over the period 1998-2010. Based on H2O, CO2, H2S, H2, and CH4 relative concentrations, we estimated redox conditions (controlled by the Fe(II)-Fe(III) buffer), a possible equilibrium mineralogical assemblage (made up by epidote-prehnite-quartz-calcite-pyrite-pyrrhotite), deep equilibration temperatures (up to 350°C), and CO2 partial pressures (up to 12 bar) for the deepest, liquid-dominated portions of the reservoir. (literal)

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