4 research outputs found
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Gaseous species in fluid inclusions: A tracer of fluids and indicator of fluid processes
Quantitative bulk analysis of fluid inclusion volatiles measures the composition of trapped geothermal liquids and vapor. Fluid-inclusion gas-analyses may identify fluid boiling and mixing, and the analyses can be used as a fluid tracer. Fluid boiling is indicated by excess gaseous species. Linear arrays of data points on gas ratio diagrams indicate fluid mixing. Nitrogen-argon ratios are used to discriminate atmospheric fiom magmatic volatiles. Crustal components in geothermal fluids are best indicated by concentrations of methane and helium. Methane strongly correlates with other organic compounds, and N2-Ar-CH4 plots are similar to N2-Ar-He diagrams. Alkene to alkane ratios of C2-7 organic species indicate the oxidation state of geothermal fluids. The Geysers inclusion analyses are an example of how inclusion fluids may be used to understand the paleo hydrology of a geothermal system
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Vapor-dominated fields: Fluid reserves and geothermometry
A vapor-dominated reservoir is modelled as a uniform porous medium containing immobile water and mobile steam. Changes in concentrations of different gas species are used to determine the porosity and liquid saturation of the reservoir. The âgrid" method provides an incomplete analysis of this type of reservoir, either for water content or reservoir temperature. It is conjectured that the reservoirs of Kamojang and Darajat in Indonesia are significantly wetter than The Geysers, and consequently have greater fluid reserves per cubic kilometre
Memorias IX Congreso GeolĂłgico Venezolano (4)
Memorias IX Congreso Geológico Venezolano (4