Initial pressure distribution the geothermal field of Los Humeros, Puebla, Mexico

To obtain the undisturbed distribution of pressures of a field flow, a significant amount of data concerning geological, geochemical, geophysical, and field drilling and engineering aspects, from 42 wells located at the geothermal field of Los Humeros, was analyzed. Based on the studied data, models of the field pressure distribution in its initial state were developed. The models reveal the existence of at least two deposits. One of them. the most superficial, is located between 1025 and 1600 meters over the sea level, and from its excellent congruence with the pressure profile of a boiling water column, it may be considered as a predominantly liquid field. The pressure profile of this field is that of a boiling water column, at a temperature of about 300-330 degreesC. The second field is below 850 meters over the sea level and from the known data it reaches at least 100 meters over the sea level. It is considered a low-liquid saturated field. The temperatures of the wells supplied by this field were estimated to be about 300-400 degreesC.