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Previous issue date: 2016-12-16 / A avalia??o do comportamento hidrodin?mico e hidroqu?mico de aqu?feros em ?reas sob a influ?ncia da atividade petrol?fera s?o essenciais para a prote??o e gest?o do recurso h?drico subterr?neo.
Neste sentido, s?o analisadas neste trabalho as rela??es entre as cargas hidr?ulicas dos aqu?feros Barreiras-Janda?ra e A?u na ?rea de Fazenda Bel?m, setor oeste da Bacia Potiguar, Estado do Cear?, e suas implica??es na qualidade das ?guas subterr?neas. Foram definidas as superf?cies potenciom?tricas das unidades aqu?feras Barreiras-Jandaira e A?u em diferentes per?odos desde seu estado original, antes da influ?ncia da atividade petrol?fera, at? os dias atuais, bem como identificadas as modifica??es hidroqu?micas nessas unidades ao longo desse per?odo. Foi poss?vel concluir que os aqu?feros A?u e Barreiras-Janda?ra correspondem a sistemas aqu?feros individualizados e sem comunica??o hidr?ulica entre si. Os tipos hidroqu?micos distintos definidos para as ?guas dos dois sistemas aqu?feros ratificam o isolamento hidr?ulico caracterizado, sugerindo a inexist?ncia de mistura de ?guas entre os mesmos, desde seu estado original at? o presente. O estudo constatou ainda um rebaixamento localizado da superf?cie potenciom?trica do Aqu?fero A?u, o que aponta para a necessidade de se propor medidas de controle, mediante o monitoramento cont?nuo dos n?veis d??gua desse aqu?fero e da qualidade de suas ?guas / The evaluation of the hydrodynamic and hydrochemistry behavior of the aquifers
in areas under the influence of the oil exploration activity is essential to the protection
and management of the groundwater resource. In this sense, were analyzed in this work the relationship between hydraulic loads of aquifers Barreiras-Janda?ra and A?u, in the oil production concession area of
Fazenda Bel?m, West sector of the Potiguar Basin, State of Cear?, and its implications
on the quality of groundwater. The A?u Aquifer is composed by Units 2 and 3 of A?u Formation, composed
predominantly of thick sandstones at the base, with decreasing grain size to the top,
with metrics and decimetrics beds of mudstone and silt. On top of the A?u Aquifer
occurs a 70 meters thick package of mudstone and silt of Unit 4 of A?u Formation,
which covers and seals the Units 2 and 3 of A?u Aquifer, giving a confined character to
it. The Aquifer system Barreiras-Janda?ra is represented by sandstones and
conglomerates of the Barreiras Formation and Quaternary Sediments, which cover the
carbonates of Janda?ra Formation (packstones and wackstones) and expose the
groundwater of this Aquifer at atmospheric pressure. The potentiometric surfaces of the two aquifers systems for different periods, since its original state, before the influence of the oil exploration activity, until the
present day were set, as well the variations in hydrochemistry of these units, throughout
this period and the saturated thickness of the two Aquifer units. With this amount of information is possible to presume that the A?u and Barreiras?Janda?ra aquifers correspond to individual aquifers systems without hydraulic communication with each other. The distinct water chemical classes of the two aquifers
confirm the isolation between them indicating the absence of water mix between the two
systems, since its original state until the present. The study has identified a local fall in the potentiometric surface of the A?u aquifer, which points to the need to propose measures of control, through the
continuous monitoring of water levels of the aquifer and the quality of its waters.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/22582 |
| Date | 16 December 2016 |
| Creators | Braga J?nior, Maurilo Gon?alves |
| Contributors | 05154782453, http://lattes.cnpq.br/0211642116790211, Diniz Filho, Jos? Braz, 22219943453, http://lattes.cnpq.br/7412136542629826, Leal, Luiz Rog?rio Bastos, 39873927549, http://lattes.cnpq.br/6409332830031336, Melo, Jos? Geraldo de |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM GEODIN?MICA E GEOF?SICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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