Numerical methods are used to simulate difficult cases of exploration geophysics, and, for this reason, it is always necessary to develop fast and efficient computational algorithms to achieve these results. In this article, we worked in a one-dimensional computational algorithm, in order to simulate conductivities well logs, which were collected in areas considered as complex geological environments. The developed program was used to analyse effects in induction well logs, choosing several sequences of thin horizontal parallel intercalated layers with high contrast of conductivities (shalesand) as model, which is a very common geological situation of oil reservoirs and, always, in accord with by the petroleum industry, presents difficulties in interpretation. In this form, to perform our modelling, we used ILD, 2C40 and 6FF40 tools, all developed by SCHLUMBERGER and commonly utilised in oil industry. Thus, our results show that focalized tools as 6FF40 has better responses in the studied cases, but among of them, the values of conductivities and thickness of the layers were always very far from the theoretical models.Keywords: one-dimensional, numerical, simulation, induction, oil, reservoirs RESUMOOs métodos numéricos são comumente utilizados na simulação de casos difíceis da geofísica de exploração, e, para esta razão, é sempre necessário desenvolver algoritmos computacionais rápidos e eficientes para atingir esses objetivos. Neste artigo, trabalhamos num algoritmo computacional unidimensional com a finalidade de simular perfis condutivos em poço, que foram coletados em ambientes geológicos complexos. O programa foi usado para analisar efeitos nos perfis de indução, escolhendo como modelo diversas seqüências intercaladas de camadas paralelas horizontais finas (folhelho-areia), com alto contraste de condutividades, o que caracteriza uma situação geológica muito comum nos reservatórios, e, sempre, de acordo com a indústria de petróleo, apresenta dificuldades de interpretação. Dessa forma, para realizar nossa modelagem, utilizamos as ferramentas ILD, 2C40 e 6FF40, desenvolvidas pela SCHLUMBERGER e muito usadas na perfilagem de poços. Nossos resultados mostram que as ferramentas focalizadas do tipo 6FF40 possuem melhores respostas nos casos analisados, mas, na maioria das sondas, os valores de condutividades e espessuras das camadas ficam muito longe dos modelos teóricos.Palavras-chave: Perfilagem de indução, modelamento numérico, modelos sintéticos em camadas delgadas
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