Accurate determination of bubble-point of oils from PV data using a combination of Y-function and Tait equation

In this work, we provide a numerical approach, relying on robust fluid models, to accurately estimate the bubble point of oils from pressure-volume data. The proposed scheme relies on the Tait equation to accurately model the liquid data and on the efficiency on the Y-function to describe the two-phase data. This operator independent scheme has been applied to a set a black-oils and volatile oils of reliable literature experimental data. Results show that the proposed scheme yields bubble-point pressures with deviations of a few psi when compared to experiments. More precisely, we have obtained an average absolute deviation smaller than 0.3% which is one order of magnitude better than usual approaches.