Valença, Dione MariaDantas, Maria Aldilene2014-12-172009-04-152014-12-172008-04-28DANTAS, Maria Aldilene. Modellinf of data of flaws of equipmente of sub-surface in oil well of the Bacia Potiguar. 2008. 118 f. Dissertação (Mestrado em Estratégia; Qualidade; Gestão Ambiental; Gestão da Produção e Operações) - Universidade Federal do Rio Grande do Norte, Natal, 2008.https://repositorio.ufrn.br/jspui/handle/123456789/14900This master´s thesis presents a reliability study conducted among onshore oil fields in the Potiguar Basin (RN/CE) of Petrobras company, Brazil. The main study objective was to build a regression model to predict the risk of failures that impede production wells to function properly using the information of explanatory variables related to wells such as the elevation method, the amount of water produced in the well (BSW), the ratio gas-oil (RGO), the depth of the production bomb, the operational unit of the oil field, among others. The study was based on a retrospective sample of 603 oil columns from all that were functioning between 2000 and 2006. Statistical hypothesis tests under a Weibull regression model fitted to the failure data allowed the selection of some significant predictors in the set considered to explain the first failure time in the wellsapplication/pdfAcesso AbertoConfiabilidadePoço de petróleoModelo regressão WeibullReliabilityWeibull regresssion modelOnshore oil fieldsmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA DE PRODUCAO