Abstract
PVT data are essential in conducting reservoir engineering studies, and whenever experimentally derived PVT data are not available, correlations are commonly used. These correlations are applicable in a limited range of reservoir fluid properties and some are based on local geographical regions. Murzuq basin crude oils are characterized by their low bubble point pressures and low gas oil ratios. This paper evaluates the most frequently used PVT correlations for application in crude oils of the Murzuq Basin in Libya. The oil formation volume factor was predicted with reasonable accuracy by most of the correlations without modifications to the original forms. Most of the tested correlations for predicting bubble point pressure and solution gas oil ratio, however, were not comparable with the experimental data. Modified forms were generated and gave better estimates of the bubble point pressures and solution gas oil ratios than the original published correlations. These modified forms could now be used to predict oil properties for crude oils with low bubble point pressures and low gas oil ratios.
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