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Abstract:  It seems intuitive that propped fracture performance should correlate with fluid recovery after a fracturing treatment.  Yet, this is often not the case.  However, it has been observed that the dilution profile of the fracturing fluid in the produced water after the fracturing treatment embeds significant information regarding the quality of the resulting propped fracture.  This presentation will demonstrate how the Dilution Method can be used to extract useful information about the cleanup process, the quality of the propped fracture, the recovery of gelling agent, and other interesting observations.