Evaluation and development of correlation for formation volume factor and gas solubility of Yemeni oil

Abstract EN

Reservoir fluid properties such as oil formation volume factor and solution gas oil ratio are of primary importance in reservoir engineering computations such as material balance calculation, while viscosity of crude oil and density required for controlling the oil’s flow through porous media and pipes and play an essential role in production engineering and in well problem analysis.

This study evaluates all available published oil formation volume factor and gas oil ratio empirical correlations against a set of Yemeni PVT data.

The study presents new tuned empirical correlations for Yemeni crude oils for oil formation volume factor and solution gas oil ratio at bubble point pressure based on huge Yemeni data sets.

Excel program techniques such as solver function are also used for predicting oil formation volume factor and solution gas oil ratio at bubble point pressure.

To compare the performance and accuracy of the new reservoir fluid properties correlations, statistical error analysis is performed.

The statistical analysis results indicate that, the new tuned oil formation volume factor and solution gas oil ratio correlations outperforms the most common empirical correlations with least average absolute error, least standard deviation and highest correlation coefficient.

Key words: Reservoir fluid, material balance, viscosity, density, empirical correlations, Yemeni PVT, bubble point, Excel program.