Desenvolvimento de um elemento finito para modelagem do comportamento de poços verticais em rochas salinas

• Ano de defesa: 2012
• Autor(a) principal: Araújo, Catarina Nogueira de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Alagoas; Brasil; Programa de Pós-Graduação em Engenharia Civil; UFAL
• Palavras-chave em Português: Método dos elementos finitos; Rochas salinas; Poços – Fechamento; Finite Element Method; Salt rocks; Well closure; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: http://www.repositorio.ufal.br/handle/riufal/3504

This work describes the development of an axisymmetric finite element for the simulation of the viscous behavior of rock salt during vertical well drilling. Based on the displacement formulation of the Finite Element Method, functions on the format of the simplified elastic solution are used for the interpolation inside the element, thereby it is possible to describe the behavior of the system with a few degrees of freedom. The numerical modeling using the proposed element provides faster and more precise answers, therefore it can be used to assist both the design and making of wells, risk analysis and the calibration of the rock viscoelastic parameters in real scale situations. A model with few degrees of freedom representing the studied problem is useful for the low time required to provide results. To verify the proposed element efficiency, results and comparisons with classical finite elements are presented.