Compositional model improves gas-lift optimization for Iranian oil field

02/06/2006
A simulation with a compositional model improved the accuracy when compared with a black-oil model for predicting the performance of gas-lift wells in the Aghajari oil field in Iran.The Marun oil field gas compressor station supplies the lift gas, which is drier and has a lower molecular weight than the gas from the Aghajari field separators. These differences in gas cause inconsistencies in black-oil model calculations.The black-oil method is fast but not accurate when one must take into account compositional differences.The study evaluated the gas-lift system with black oil and compositional models combined with multiphase flow correlations. The compositional modeling employs the Peng-R...
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