Many gas condensate wells show a significant decrease in productivity once the pressure falls below the dew point pressure. A widely accepted cause of this decrease in productivity index is the decrease in gas relative permeability due to build up of condensate in the near wellbore region. Predictions of well inflow performance require accurate models for the gas relative permeability. Since these relative permeabilities depend on fluid composition and pressure as well as condensate and water saturations, a model is essential for both interpretation of laboratory data and for predictive field simulations as illustrated in this paper.
G.A. Pope, W. Wu, G. Narayanaswamy, M. Delshad, M. Sharma, P. Wang, "Modeling Relative Permeability Effects in Gas-Condensate Reservoirs," SPE 49266 Proceedings of the 1998 SPE Annual Technical Conference and Exhibition, New Orleans, LA, 27-30 September.
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Last updated: April 25, 2002