IBP22604 SIMULAÇÃO NUMÉRICA DE FLUXO COM POÇOS "VIRTUAIS" PARA A PREVISÃO DE COMPORTAMENTO DE REGIÕES COM FRONTEIRAS ABERTAS: SEM MODELO COMPLETO DO CAMPO

This work shows a methodology that allows simulating one region of interest (for example, in mature fields) without having that to simulate the global field. The main objectives are: (1) to make possible the modeling of specific regions of reservoirs and/or (2) to reduce the effort and the computational time with small reduction of precision. The used technique was to decompose the reservoir in smaller units and to increase the model to decrease the influence of the alterations in the boundaries (for example, "virtual" wells) in the results of the interest region. The difficulty to decompose the reservoir in smaller units is to define the boundaries conditions of the model, because the flows cross the boundary. Alternative of solutions: a) to use "virtual" wells in the boundaries to represent the flow. b) To increase the size model, with this the impact in the interest region will be minimized. This work integrated two alternatives, to approximate the model of interest region with the global fields. For the case studied, the time reduction was of approximately 70%, with an adequate precision.