Modelagem e simulação da recuperação secundária em reservatórios de petróleo utilizando configuração Five-Spots

• Autor(a) principal: Oliveira, Leonardo Mendonça Tenório de Magalhães
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal de Alagoas (UFAL)
• Texto Completo: http://www.repositorio.ufal.br/handle/riufal/1215
• topic: Engenharia Química; Recuperação secundária; Petróleo; Simulação fluidodinâmica; Secondary recovery; Oil; Fluid dymanics simulation; CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA

The decline of oil reserves has been observed in recent years and generates interest in developing new technologies that can make the most of existing wells and reservoirs in order to increase oil recovery. For this purpose, methods and enhanced secondary recovery of oil are used, which consist of injecting fluids targeting a certain pressure increase in the tank or changes in physical properties of oil to a larger and more efficient production. The method of secondary recovery that stands out, and the most common is the water injection. This method has proved effective for recovery of heavy oil, though the challenge of the pre-salt environment has promoted further research aimed at removing light oils. This study, then, aims to make the fluid dynamics simulation of a reservoir of oil quadratic dimensions of 80.4 mx 80.4 mx 20 m with injection model five spots (five points) using as guns fluids primarily water and later natural gas and hot water, to observe the evolution of their volume fractions inside the shell, its oil recovery factor, recovery efficiency as a whole and a qualitative analysis of useful life of the producing wells. The developed model is based on two-phase oilwater model and the simulations were carried out in commercial fluid dynamic packet ICEM CFD and ANSYS CFX 13.0 respectively. Thus, a greater than 65% recovery factor for the process of injection water was observed and an overall efficiency of 38% recovery, allowing the case to the oil basins of the pre-salt. Other methods enabled to validate the model because the profiles and characteristics found are plausible and phenomenologically similar to those in the literature.