Abstract
Abstract Accurate simulation of well productivity losses due to condensate buildup generally requires a finely gridded radial model and either a fully implicit or adaptive implicit solution method. Computer costs for including the grid refinement necessary to capture near well liquid dropout effects in full field, compositional simulations can be extreme even for models with local grid refinement and adaptive implicit capabilities. We propose an alternative simulation method which accurately computes condensate blockage effects in multiwell, full field simulations without local grid refinement. The method is based on the use of correlations of "pseudo skins" which can then be combined with a general well function equation to capture the effects of well productivity losses. The correlations are developed prior to running a full field model by running a series of fine radial grid and coarse Cartesian grid single well simulations to define the relationship between the true wellbore pressure (obtained from the fine grid simulation) and the well block pressure in the coarse grid.
Published Version
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