Análise dos fatores que afetam o fator de película e a produtividade de um poço de petróleo

Abstract

There are many factors that can affect the productivity of a completed and perforated oil well. These factors include project variables, like the selected perforating parameters, as well as formation characteristics. These effects are accounted for the total skin factor, which has big influence on the production flow rate of a well. Computations were done using a commonly used semi-analytical model to analyze the variation of the total skin factor and its subcomponents when project and reservoir parameters are modified. To accomplish that, many study cases were simulated using realistic data to study the variation of the skin factor and the effects on the well productivity. The results obtained were compared and it can be observed that for wells with the greatest formation damage radius, it is very hard to reach a skin factor equal to zero or negative, indicating that is necessary to apply a stimulation method to increase the productivity in these cases. In other samples, stimulation can be done just using selected parameters for the perforation.