Estimativa dos efeitos do melhoramento da eficiência hídrica de aqüíferos fissurados no semi-árido cearense

Abstract

The state of Ceará, inserted on the polygon of aridity, has its geology marked by the crystalline bedrock, which occupies approximately 75% of its territory. Although some wells installed on fractured aquifers have good productivity the great number of them has low efficiency, which causes, later, their deactivation or their disregard. This reality can be modified by using a technique, also utilized by the petroleum industry, called hydraulic fracturing. After fracturing, some wells had their conductivity increased 34 times. This means that wells whose flow is enough to supply only 3 families, if fractured would attend 105 families. The impact of the spreading of this technology in the cearense’s semi-arid certainly would be meaningful because many communities, yet nowadays, are not attended with water supply by the reason that they are geographically isolated or diffusely distributed.