| Abstract |
The geochemical study of the current analytical information of waters and gases as well as deep temperature data of wells of the geothermal system of Berlin, it has given as a result the conceptual model of the system. The water of the reservoir enters to the system from the bottom (upflow) porn the south and then flows with N-NW direction. While it flows in the indicated direction, the fluid is cooled by processes, predominantly of boiling and steam losses, producing the fluid that feeds the wells TR-2, TR-3, TR-9, TR-I. The evidence indicates that exists boiling in the bottom of the well TR-3 or in the fluid that feeds it, in such a way that the chemical species, at reservoir condition, have been concentrated This boiling produces steam and gases that upon ascending are mixed with an intermediate aquifer (approximately 0 masl) in which the sulfuric gas diluting provoking an increase in the sulfate concentration of the aquifer. In the same zone but to a depth of 740 mas1 approximately, part of the steam - gas mixture originated from the deeper part, is condensed in the regional aquifer. The spring 83 is the principal representative of such waters with sulfate composition. The geothermal water mixed with water at the intermediate aquifier moves toward t k NNW apparently without subsequent dilutions until emerges in the banks of the Lempa river, where is produced a IGW mixture with superficial water to produce the fluid that feeds the hot spring 20. The isotopic preliminary results support the affirmation of the fact that the deep fluid of the well TR-5 originates the fluid of the remaining wells. In the same way, the isotopic results would support the affirmation of the fact that in the surroundings of the well TR-3 exists boiling. |