Hydrochemistry of Hydrothermal Fluids Geothermal Reservoirs of West Sabalan - North-West of Iran
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The geothermal source of the northern West of Sabalan, due to its presence in the active volcanoes of the present century, has a thermal source at a depth of several thousand meters and has a reservoir temperature of 150 °C (approximately 240 °C) and injection of magma under the layers below the reservoir In the category of convective geothermal systems, it has a high enthalpy that predominates in terms of the liquid phase relative to the vapor phase. In this study, wells Sampling and chemical composition and isotopic composition of these samples have been evaluated on the site of hydrothermal energy utilization in Sabalan North-West (NWS-1, NWS-3, NWS-4). Meshkinshahr water under the line of equilibrium in the range of immature water in the corner of the Mg and the fluids of the wells is close to the line of full equilibrium. The water (immature) has an approximate temperature of 250 ° C and fluids in the wells at about 280 ° C for a geothermal reservoir. According to the lithology of the region, the most important chemical method for the thermometry of hydrothermal waters in this area is the Na- K method, in the northwest sources of geometric measurements, the temperature is about 270-220, 140, 50, 30-30, 160-90 Centigrade degree. Tritium levels in these fluids indicate mixing with young groundwater. The range of δD and δ18O for the springs north of Sabalan are from 8 to 13, and 85 to 70, respectively. These are in the range of methionine water. According to the δ13C data obtained from the analysis of CO2 collected from the region's fluids, it is likely that the CO2 originates from the Sabalan region of limestone.
Language:
Persian
Published:
Journal of Hydrogeology, Volume:4 Issue: 1, 2019
Pages:
80 to 96
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