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WCA-3™ is a selective permeability modifier designed to effectively reduce brine water flow in the formation without affecting oil or gas production. WCA-3 contains an extremely hydrophilic synthetic polymer. When pumped into a producing zone, WCA-3 adheres to the formation. Once in place, it will reduce the formation permeability to water, yet leave the permeability to hydrocarbons (oil, gas, and condensate) unchanged.