Document Detail

Structural control over well productivity in the Jundiaí River Catchment, Southeastern Brazil.
MedLine Citation:
PMID:  17625684     Owner:  NLM     Status:  PubMed-not-MEDLINE    
The well productivity in crystalline terrains is extremely changeable and depends on external factors, in addition to the intrinsic properties of rocks. In the Jundiaí River Catchment, Southeastern Brazil, the main factor that influences well productivity is the existence of open discontinuities permeability in geologic environments that favor groundwater recharge. In that area, Pre-Cambrian shear and fault zones were reactivated throughout geologic time, controlling the morphostructural compartments and the Cenozoic sedimentary deposition. Superposition of productivity data and structural maps showed that more productive wells are concentrated mainly along the regional geologic structures. The structural control over well productivity is also noticeable in detailed scale. Using fine scale maps we show that the most productive wells are located in areas where brittle structures with NW-SE and E-W directions denote the action of neotectonic transtensional stress. The comprehension of evolutionary geologic history allied to fracturing analysis proved to be an efficient and a low cost technique, which is adequate for selecting areas for further developments using more expensive methods.
Mirna A Neves; Norberto Morales
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Anais da Academia Brasileira de Ciências     Volume:  79     ISSN:  0001-3765     ISO Abbreviation:  An. Acad. Bras. Cienc.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-07-12     Completed Date:  2007-12-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503280     Medline TA:  An Acad Bras Cienc     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  307-20     Citation Subset:  -    
Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, ES, 29500-000, Brazil.
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