Surface Condensate Molecular Weight

In gas condensate reservoirs, well stream fluid gravity represents the average molecular weight of the produced mixture (relative to air) and is readily calculated from the producing-oil (condensate)/gas ratio, average surface-gas gravity; surface-condensate gravity; and surface-condensate molecular weight.

When surface condensate molecular weight is not available, Several correlations are proposed to calculate it.

Reference: Phase Behavior, Curtis H. Whitson and Michael R. Brule