Evolution of the thermal cap in two wells from the salton sea geothermal system, California

作者: Joseph N. Moore , Michael C. Adams

DOI: 10.1016/0375-6505(88)90031-4

关键词: Sedimentary rockAnhydriteFluid inclusionsEvaporiteMineralogyCalciteGeochemistryPetrographyGeologyGeothermal gradientQuartzGeotechnical Engineering and Engineering GeologyRenewable Energy, Sustainability and the Environment

摘要: Abstract The Salton Sea geothermal system is located near the center of sediment-filled Trough where temperatures locally reach 365°C at depths 2 km. reservoir overlain by a thermal cap low-permeability rocks that restricts upward movement high-temperature brines. Petrographic and fluid-inclusion studies in two wells drilled southern part field indicate consists an upper layer lacustrine evaporite deposits with low initial permeabilities lower deltaic sandstones. sandstones were incorporated into as downward percolating fluids deposited anhydrite calcite pore space rocks, reducing their permeabilities. During development cap, base-metal sulfides, potassium feldspar quartz brines from higher-temperature portions system.

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