Modelagem física e computacional da perda de carga na elevação multifásica de petróleo: validação Beggs and Brill

Abstract

The main objective of this work is to understand the pressure drop behavior during the oil rise. A physical model developed by students of Petroleum Engineering able to simulate multiphase fluid and gas production was used. There were multiple tests in order to check the types of flow usually observed in elevation of hydrocarbons, determining the pressure drop for each system. The flows in transition, slug, churn and annular were observed, each with their unique characteristics. The experiments allowed to observe and verify various claims made in the literature. The analysis obtained with the implementation of the experimental procedure allowed to infer that the largest contribution to pressure drop in elevation of the fluid comes from the potential energy. Furthermore, it was observed that the pressure drop is linked directly the density of the multiphase mixture and flow pattern. It is worth noting that the efficiency of the experimental measurements was satisfactory because the pressure drop obtained by correlation Beggs and Brill were validated with a coefficient of determination (R²) worth 0.860. This validation was performed by using the modeling of the observed properties and applied the Bernoulli energy conservation law. It was concluded that there is a wide range of variables , such as pressure , flow rates and surface speeds that should be analyzed and studied carefully because they interfere directly in the behavior of the oil well pressure drop