Abstract: Provided is a method for treating a sandstone formation with a well treatment composition. The method may include introducing a pre-flush pill, introducing the well treatment composition, introducing a post-flush fluid, and maintaining the wellbore such that the well treatment composition interacts with the sandstone formation. Further provided is a method that may introduce the well treatment composition as two pills, such as an organic acid pill and an inorganic acid pill. The well treatment composition may include an aqueous solution of an ammonium salt, an inorganic acid, an organic acid, and optionally one or more of a pH adjuster, a mutual solvent, a surfactant, and a corrosion inhibitor.

Abstract: Provided is a method for treating a sandstone formation with a well treatment composition. The method may include introducing a pre-flush pill, introducing the well treatment composition, introducing a post-flush fluid, and maintaining the wellbore such that the well treatment composition interacts with the sandstone formation. Further provided is a method that may introduce the well treatment composition as two pills, such as an organic acid pill and an inorganic acid pill. The well treatment composition may include an aqueous solution of an ammonium salt, an inorganic acid, an organic acid, and optionally one or more of a pH adjuster, a mutual solvent, a surfactant, and a corrosion inhibitor.