Modelagem fuzzy para definição de potencial de corrosividade em dutos de petróleo

Abstract

Pipelines, in the global context of the oil industry, are the main modal for transport of this product. The possibility of transporting large volumes of oil at a low cost is one of the reasons. However, the pipelines carry with them risks of environmental accidents if their structural integrity is not well monitored, also with regard to the phenomenon of corrosion, to which it is the main cause of damage to its integrity. With this concern, this work was developed in order to create a model using Fuzzy logic that allows inferring the internal corrosion rate in the pipeline, and consequently, the potential of corrosiveness acting in those whose corrosion mechanism is predominantly caused by microbiological action. With the model created, using operational parameters of a pipeline operated by the operating company Petrobras Transporte (TRANSPETRO), it was possible to obtain results of corrosion rate, and consequent potential of corrosiveness, which in most cases, when compared with those obtained by conventional techniques, were very coherent, but with the advantage of enabling the anticipation of mitigating actions, since conventional monitoring processes require a longer time for their performance and analysis of results. Thus, the model proved to be adequate to what was proposed.