PVT Publications

New correlations for formation volume factors of oil and gas mixtures

MUHAMMAD ALI A-MARHOUN, King Fahd U. of Petroleum and Minerals

Abstract:

This paper present new correlations for formation volume factors (FVF) at, above and below bubblepoint pressure for oil and gas mixtures as empirical functions of solution gas oil ratio, gas relative density, oil relative density, pressure, and reservoir temperature.  The correlations are developed from a total of 11 728 experimentally obtained FVF at, above and below bubblepoint pressure on oil-gas mixtures collected from  fields all over the world.  The data encompassed a wide range of gas-oil ratios, oil and gas relative densities, pressure and reservoir temperature.

            The newly developed correlations outperform the existing correlations for FVF of oil and gas mixtures based on high correlation coefficient and on low values of average percent relative error, average absolute percent relative error and standard deviation.

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