Abstract: A process for enhanced oil recovery includes the steps of providing an alkali metal borohydride; providing an alkali metal bisulfite; combining the alkali metal borohydride and the alkali metal bisulfite along with water to provide an oxygen-scavenger composition; combining the oxygen-scavenger composition and an aqueous composition to provide an oil recovery solution; and introducing the oil recovery solution into an earthen formation at a pressure to provide for enhanced oil recovery.

Abstract: A fracturing fluid may include water; at least one polymeric viscosifier; at least one proppant; and a solution of peracetic acid in an amount effective to inhibit bacterial growth. Other embodiments are directed to methods for inhibiting bacterial contamination in a fracturing fluid and/or ballast water.

Abstract: In one aspect, embodiments disclosed herein relate to a process for enhanced oil recovery. The process includes the steps of providing an alkali metal borohydride; providing an alkali metal bisulfite; combining the alkali metal borohydride and the alkali metal bisulfite along with water to provide an oxygen-scavenger composition; combining the oxygen-scavenger composition and an aqueous composition to provide an oil recovery solution; and introducing the oil recovery solution into an earthen formation at a pressure to provide for enhanced oil recovery.