Abstract: Scale inhibitor compositions and methods for treating a subterranean hydrocarbon producing formation and/or oilfield equipment are disclosed. The scale inhibitor composition comprises a scale inhibitor comprising at least one copolymer, a corrosion inhibitor comprising at least one acid, a neutralizing agent, and an optional solvent. The methods inhibit corrosion of metal surfaces by contacting at least one metal surface with at least one scale inhibitor composition and treat the subterranean formation by contacting a subterranean zone of the subterranean formation with the scale inhibitor composition such that corrosive effects of an acidizing composition on metal surfaces in contact therewith are reduced.