Análise de modelos geológicos utilizando percolação dinâmica

AUTOR(ES)

Ricardo Wanderley de Oliveira

DATA DE PUBLICAÇÃO

2009

RESUMO

In the present study we elaborated algorithms by using concepts from percolation theory which analyze the connectivity conditions in geological models of petroleum reservoirs. From the petrophysical parameters such as permeability, porosity, transmittivity and others, which may be generated by any statistical process, it is possible to determine the portion of the model with more connected cells, what the interconnected wells are, and the critical path between injector and source wells. This allows to classify the reservoir according to the modeled petrophysical parameters. This also make it possible to determine the percentage of the reservoir to which each well is connected. Generally, the connected regions and the respective minima and/or maxima in the occurrence of the petrophysical parameters studied constitute a good manner to characterize a reservoir volumetrically. Therefore, the algorithms allow to optimize the positioning of wells, offering a preview of the general conditions of the given models connectivity. The intent is not to evaluate geological models, but to show how to interpret the deposits, how their petrophysical characteristics are spatially distributed, and how the connections between the several parts of the system are resolved, showing their critical paths and backbones. The execution of these algorithms allows us to know the properties of the models connectivity before the work on reservoir flux simulation is started

ASSUNTO(S)

percolation caminho crítico petroleo e petroquimica modelos isotrópicos e anisotrópicos simulação de fluxo backbone linha de fluxo percolação line flow simulation flow percolation by invasion critical path backbone isotropic and anisotropic models percolação por invasão

Documentos Relacionados

• A transição de fase para modelos de percolação Bootstrap
• Modelos de percolação elétrica aplicados para compósitos poliméricos condutores
• Análise de modelos córticos isostaticamente equilibrados utilizando modelos geopotenciais globais modernos
• Métodos de estimativas de parâmetros eletromagnéticos em modelos geológicos unidimensionais
• Otimização dinâmica em tempo real utilizando modelos não-lineares simplificados