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Revista mexicana de ciencias geológicas
versión On-line ISSN 2007-2902versión impresa ISSN 1026-8774
Resumen
RAMAJO, Hipólita et al. New SexI tools to evaluate the evolution and anthropic disturbance in geothermal fields: The case of Los Azufres geothermal field, México. Rev. mex. cienc. geol [online]. 2010, vol.27, n.3, pp.520-529. ISSN 2007-2902.
Lee's classification (Lee, K.C., 1996, Proceedings, Twenty-First Workshop SGP-TR-151 on Geothermal Reservoir Engineering: Stanford, California, Stanford University, 85-92; Lee, K.C., 2001, Geothermics, 30(4), 431-442), based on the specific exergetic index (SExI) has been sparsely used in geological sciences as a way to classify a natural energetic resource. Although useful, it does not take into account the modifications induced to a geothermalfield by human exploitation, where exergy is not controlled anymore by natural-driven variables but by the anthropic ones. In this paper we propose a new way to evaluate the energy-exergy dichotomy, taking into account both geochemical (chlorinity) and anthropic (water flow rate, effective well radius) variables applied to a geothermalfield (Los Azufres) where intensive data has been gathered during the past three decades. This original approach will allow to understand the past and present, as well as to evaluate the future behavior of a geothermal well and to plan a better exploitation strategy that prevents geothermal fluid exhaustion.
Palabras llave : geothermalfields; classification; exergy; flow rate; chlorinity; anthropic effects; Los Azufres; Mexico.