Abstract
Lean gas cycling and gas injection scenarios are widely used to avoid liquid formation and to revaporize the liquid drop-out in gas condensate reservoirs. In this study, the performance of methane, carbon dioxide, and nitrogen as injecting gases into fractured retrograde gas reservoirs for revaporization of condensates is discussed. The investigation is performed from two perspectives: comparison of the condensate revaporization potency of injecting gases and comparison of the mixing performance of injecting gases. The results show that carbon dioxide has the best performance for condensate revaporization, whereas nitrogen has a greater diffusion coefficient (i.e., the best mixing performance).
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