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A New Correlation for Gas-condensate Dewpoint Pressure Prediction

A.A. Humoud, SPE, Saudi Aramco, and M.A. Al-Marhoun, SPE, King Fahd U. of Petroleum and Menirals

This paper was prepared for presentation at the 12^th SPE Middle East Oil Technical Conference & Exhibition held in Bahrain, 7-20 March 2001.

Abstract:

The paper presents a new empirical correlation to predict the dewpoint pressure of gas-condensate fluids from readily available field data. The new correlation relates the dewpoint pressure of a gas-condensate fluid directly to its reservoir temperature, pseudoreduced pressure and temperature, primary separator gas-oil ratio, the primary separator pressure and temperature, and relative densities of separator gas and heptanes-plus fraction. The correlation was developed based on field and laboratory PVT analysis data of several gas-condensate fluid samples representing different gas reservoirs in the Middle East. Additional data sets, not included in the development of this correlation, were used to validate the new model’s accuracy. Based on the error statistical analysis results, the new model outperforms the existing correlations.

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