Aplicação da análise de curva de declínio ao campo de Gavião Real

Abstract

Knowing the expected production of oil fields is extremely important to plan investments or even how wells and installations in these areas will be abandoned. The Gavião Real Field, in the Parnaíba Basin, has huge reserves of natural gas, which represents a huge exploration potential, therefore, estimating its future production flow, and the rate at which this flow will decline, is a strategic planning tool. which will help to better manage these reserves. For this reason, the Decline Curve Analysis method was applied with the available production data. First, it was necessary to determine how the production decline curve of this field behaved, or was closer, having as parameters the three models presented in the literature. This determination was made by two methods: the e Arps Method and the Numerical Production Decline Method. Afterwards, it was possible to apply the data to the corresponding equations to obtain the rate of decline, which was calculated using three methods: Arps Method, Numerical Production Decline Method and Multiple Linear Regression Method. For the analyzed production period, the decline curve was closer to an exponential curve, the rate of decline that was closest to the real data was a=0.0175, however, several aspects can lead to the variation of this rate in the future.