.... a. Anionic FR Observations, Results, and Discussions Abstract During stimulation and production, a highly viscous and rubbery precipitation can form due to incompatibility of friction reducer polymers (cationic, anionic or amphoteric) with ferric ions, particularly in formations with high iron...

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... the porosity, permeability and strength of the proppant pack as precipitants are deposited. Factors that were believed to control the occurrence and degree of diagenesis include closure stress, reservoir temperature, proppant type and mineralogy of the rock formation. While much work has been directed...