Laboratory and Theoretical investigations of Petroleum Reservoir Fluid Properties


  • Mohamed Lamoj Libyan Petroleum Institute, Petroleum PVT Department, Al-siyahia. Libya, Academy of Higher Education, Department of Oil and Gas Engineering, Janzur, Libya



Pressure Volume Temperature (PVT), API Gravity, Empirical Correlations, EOS Model


Understanding the Pressure-Volume-Temperature (PVT) properties is very important to many kinds of petroleum determinations like calculations of reservoir fluid properties; expect the future performance, selection of enhanced oil recovery methods, and for production facilities design. Models for expecting reservoir fluid properties has been increased attention during last decade by knowing reservoir pressure and temperature, oil API gravity, and gas gravity. In general, PVT properties are obtained from laboratory experiments but in some cases In this study, complete PVT lab experiments were done and evaluated the most frequently used empirical black oil PVT correlations for application in the Middle East. Empirical PVT Correlations for the Middle East crude oil was compared as a function of commonly available PVT data. Correlations compared for: Bubble point pressure, solution gas oil ratio, oil formation volume factor, oil density, and oil viscosity. After evaluating the Empirical correlations, the crude sample was characterized using different EOS to arrive at one EOS model that accurately describes the PVT behavior of crude oil produced. The multi-sample characterization method is used to arrive at one consistent model for crude oil for the whole reservoir. The fluid sample is first analyzed for consistency to ensure that they are representative of oil produced, then it is used to obtain parameters for EOS model. The tuning procedure for the EOS is done systematically by matching the volumetric and phase behavior results with laboratory results. Results showed that some correlations give good results in PVT properties compared to the laboratory and can be used with Libyan oil, while some give a high percentage of error.


Download data is not yet available.


Danesh, A. (1998). PVT and Phase Behavior of Petroleum Reservoir Fluids, 1st ed, Amsterdam, Elsevier Science B.V.

Tarek, A. (2001). Reservoir Engineering Hand Book (2nd ed), GPP.

McCain, W. D. (1990). The Properties of Petroleum Fluids (2nd ed), Tulsa, OK, USA: Pennwell Books.

Ahmed, T. (1989). Hydrocarbon Phase Behavior, Gulf Publishing Company, 7.

Al-Marhoun, M. A. (1988). PVT correlations for Middle East crude oils. Journal of Petroleum Technology, 40(05), 650-666.

Hemmati, M. N. & Kharrat, R. (2007). Evaluation of Empirically Derived PVT Properties for Middle East Crude Oils. Scientia Iranica, 14(4), 358-368.

Chew, J. & Connally, C. A. (1959). A Viscosity Correlation for Gas-Saturated Crude Oils, Trans. AIME, 216, 23-25.

Burcik, E. J. (1979). Properties of Petroleum Reservoir Fluids, USA, International Human Resources Development Corporation.

Dokla, M. F. & Osman, M. E. (1992). Correlation of PVT Properties for UAE Cruds, SPE, 80-81.

Khazam, M. M. (1995). Statistical Evaluation and Optimization of PVT Correlations for Libyan Crudes. National Oil Corporation.

Ayala, L. F. (2006). Phase behaviour of hydrocarbon fluids–the key to understanding oil and gas engineering systems. Business Briefing: Oil & Gas Processing Review.




How to Cite

Lamoj, M. . (2022). Laboratory and Theoretical investigations of Petroleum Reservoir Fluid Properties. American Journal of Energy and Natural Resources, 1(1), 1–13.