Hydrochemical–isotopic and hydrogeological conceptual model of the Las Tres Vı́rgenes geothermal field, Baja California Sur, México

Portugal, Enrique; Birkle, Peter; Tello, Enrique; Tello, M.

doi:10.1016/s0377-0273(99)00195-x

Cited by 63 publications

(42 citation statements)

References 8 publications

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“…Numerous hydrothermal manifestations occur in the field and chemical compositions include: sodium chloride, sulfate, and bicarbonate water (Portugal et al 2000;Tello et al 2005;Viggiano-Guerra et al 2009;Birkle et al 2010). Geothermal water from the production wells is sodium chloride type and presents full equilibrium with a calculated reservoir temperature around 300°C and the isotopic composition indicates a magmatic contribution of at least 30% (Portugal et al 2000).…”

Section: Las Tres Vírgenes Geothermal Field (Lvtgf)mentioning

confidence: 99%

“…It varies from 0.3 to 3.0 mD, with an effective porosity from 0.4 to 5% (Contreras and García 1998). The national water authority (CONAGUA) has evaluated 4.7 hm 3 /year as the mean annual recharge of the local aquifer (CONAGUA 2011) and the average annual rainfall amounts to 62 mm with maximum values of 150 mm at the summit of La Virgen and El Azufre volcanoes (Portugal et al 2000). Climate, hydrogeological conditions, and age data of the geothermal water suggest that modern water recharge might be practically absent (Birkle et al 2010).…”

Section: Las Tres Vírgenes Geothermal Field (Lvtgf)mentioning

confidence: 99%

“…The most recent report for temperature and pressure is 275°C and 144 bars, respectively, in producing wells in the southern part of the field (Tello-Ló pez and Torres-Rodríguez 2015). However, the highest temperature calculated for the reservoir is 300°C (Portugal et al 2000). Abandonment temperature is considered to be the saturation temperature at the installed plants-150°C (Tello-Ló pez and Torres-Rodríguez 2015).…”

Section: Production History and Parameters For Volumetric Evaluationmentioning

confidence: 99%

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Rigorous Analysis of Available Data from Cerro Prieto and Las Tres Virgenes Geothermal Fields with Calculations for Expanded Electricity Generation

2016

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Changes in legislation have opened the Mexican geothermal resources for exploitation to private companies; therefore the evaluation of the known geothermal areas has a high priority to plan further exploitation and possibly the expansion of the well fields. The calculation of the remaining productivity of geothermal fields currently in exploitation can be achieved with less uncertainty using the parameters obtained from production and injection wells, as well as the production efficiency of the installed plants. No information about previous volumetric evaluation is available for the fields presently being exploited, and there is the possibility that they may support an increase in their energy output or extend further their production life. The most widely used calculation technique is the USGS volumetric method that requires the knowledge of parameters that can be measured only after exploitation started. Heat in place-volumetric evaluation was undertaken for two fields in Mexico: Cerro Prieto and the Las Tres Vírgenes geothermal fields, using all information obtained by exploration surveys and exploitation drilling. The obtained values allow planning a possible expansion of the fields based on their estimated mean potential output that is 1397 MWe for Cerro Prieto and 48 MWe for Las Tres Vírgenes compared to the presently installed capacity of 580 MWe.

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Section: Las Tres Vírgenes Geothermal Field (Lvtgf)mentioning

confidence: 99%

Section: Las Tres Vírgenes Geothermal Field (Lvtgf)mentioning

confidence: 99%

Section: Production History and Parameters For Volumetric Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

Rigorous Analysis of Available Data from Cerro Prieto and Las Tres Virgenes Geothermal Fields with Calculations for Expanded Electricity Generation

2016

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“…This is particularly obvious when looking at minor elements, such as Si, B, F, Sr (e.g. Portugal et al, 2000;Michel et al, 2002;Stüben et al, 2003;Gupta and Deshpande, 2005). Generally, increasing temperatures cause an increase in minor element concentrations (Tarcan and Gemici, 2003).…”

Section: Minor Elementsmentioning

confidence: 99%

“…Exploitation of geothermal water has been known to lead to induced mixing between different aquifers and causes high salinity in shallow groundwater and soils (e.g. Portugal et al, 2000;Gultekin and Gemici, 2003). In order to effectively protect and utilize both the thermal and non-thermal groundwater in this basin, it is necessary to study the spatial distribution, formation processes, and evolution mechanisms of the thermal groundwater, and understand mixing processes between thermal and non-thermal waters.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of groundwater hydrochemical characteristics and mixing behavior in the Daying and Qicun geothermal systems, Xinzhou Basin

Han

Liang

Jin

et al. 2010

Journal of Volcanology and Geothermal Research

116

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Environmental isotopic and hydrochemical characteristics of groundwater systems in Daying and Qicun geothermal fields, Xinzhou Basin, Shanxi, China

Han

Liang

Currell

et al. 2010

Hydrological Processes

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Abstract:The conceptual hydrogeological model of the low to medium temperature Daying and Qicun geothermal fields has been proposed, based on hydrochemical characteristics and isotopic compositions. The two geothermal fields are located in the Xinzhou basin of Shanxi, China and exhibit similarities in their broad-scale flow patterns. Geothermal water is derived from the regional groundwater flow system of the basin and is characterized by ClÐSO 4 -Na type. Thermal water is hydrochemically distinct from cold groundwater having higher total dissolved solids (TDS) (>0Ð8 g/l) and Sr contents, but relatively low Ca, Mg and HCO 3 contents. Most shallow groundwater belongs to local flow systems which are subject to evaporation and mixing with irrigation returns. The groundwater residence times estimated by tritium and 14 C activities indicate that deep non-thermal groundwater (130-160 m) in the Daying region range from modern (post-1950s) in the piedmont area to more than 9Ð4 ka BP (Before Present) in the downriver area and imply that this water belong to an intermediate flow system. Thermal water in the two geothermal fields contains no detectable active 14 C, indicating long residence times (>50 ka), consistent with this water being part of a large regional flow system. The mean recharge elevation estimated by using the obtained relationship Altitude (m) D 23Ð8 ð υ 2 H (‰) 121Ð3, is 1980 and 1880 m for the Daying and Qicun geothermal fields, respectively. The annual infiltration rates in the Daying and Qicun geothermal fields can be estimated to be 9029 ð 10 3 and 4107 ð 10 3 m 3 /a, respectively. The variable 86 Sr/ 87 Sr values in the thermal and non-thermal groundwater in the two fields reflect different lithologies encountered along the flow path(s) and possibly different extents of water-rock interaction. Based on the analysis of groundwater flow systems in the two geothermal fields, hydrogeochemical inverse modelling was performed to indicate the possible water-rock interaction processes that occur under different scenarios.

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Hydrochemical–isotopic and hydrogeological conceptual model of the Las Tres Vı́rgenes geothermal field, Baja California Sur, México

Cited by 63 publications

References 8 publications

Rigorous Analysis of Available Data from Cerro Prieto and Las Tres Virgenes Geothermal Fields with Calculations for Expanded Electricity Generation

Rigorous Analysis of Available Data from Cerro Prieto and Las Tres Virgenes Geothermal Fields with Calculations for Expanded Electricity Generation

Evaluation of groundwater hydrochemical characteristics and mixing behavior in the Daying and Qicun geothermal systems, Xinzhou Basin

Environmental isotopic and hydrochemical characteristics of groundwater systems in Daying and Qicun geothermal fields, Xinzhou Basin, Shanxi, China

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