Correlations for predicting solution gas – oil ratio, bubblepoint pressure and oil formation volume factor at bubblepoint of Iran crude oils
Advancing the chemical engineering fundamentals
Thermodynamics (T2-1P)
Keywords: experimental data, PVT correlations, reservoir fluid, multiple regression
Knowledge of the PVT parameters is a requirement for all types of petroleum calculations such as determination of hydrocarbon flowing properties, predicting future performance, designing production facilities, and planning methods of enhanced oil recovery. The PVT properties can be obtained from a laboratory experiment using representative samples of the crude oils. However, the values of reservoir liquid and gas properties must be computed when detailed laboratory PVT data is not available.
Over the last decade increased attention has been focused on models for predicting reservoir fluid properties from reservoir pressure, temperature, crude oil API gravity and gas gravity. Because of the availability of a wide range of correlations, it is beneficial to analyze them for a given set of PVT data belonging to a certain geological region.
The present study develops empirical PVT correlations based on Al – Marhoun's correlations for estimating the solution gas – oil ratio, bubble point pressure and bubble point oil formation volume factor for Iran crude oils. Multiple regression analysis was used in developing those correlations.
The evaluation is performed by using an unpublished data set of 55 bottom hole fluid samples collected from different locations in Iran. Based on statistical error analysis, the PVT correlations with their original coefficients and the modified coefficients were compared. The correlations developed in this study exhibit significantly lower average absolute error and deviation than the published ones.
See the full pdf manuscript of the abstract.
Presented Monday 17, 13:30 to 15:00, in session Thermodynamics (T2-1P).
