Inhibited treating acid

Claim 1

The inhibited treating acid of claim 1 wherein said acid corrosion inhibitor is present in a concentration of from about 0.1 percent to about 2.5 percent by volume of said treating acid.

Claim 4

The method of protecting a ferrous metal surface against acid corrosion which comprises the step of: contacting said surface with an inhibited treating acid consisting essentially of: a treating acid selected from the group consisting of hydrochloric acid, sulfuric acid, mixtures of hydrochloric acid and acetic acid, hydrofluoric acid and hydrochloric acid, sulfuric acid and acetic acid, sulfuric acid and hydrofluoric acid, and mixtures thereof; an acid corrosion inhibitor selected from the group consisting of acetylenic alcohols and mixtures thereof, and mixtures of organic nitrogen compounds and acetylenic alcohols; and cuprous iodide present in a concentration in the range of about 25 ppm by weight of treating acid to about 25,000 ppm by weight of treating acid wherein said contacting of said surface is conducted at temperatures of up to about 450*F.

Claim 7

The method of protecting a ferrous metal surface against acid corrosion which comprises the steps of: contacting said surface with an inhibited treating acid consisting essentially of a treating acid selected from the group consisting of hydrochloric acid, sulfuric acid, mixtures of hydrochloric acid and acetic acid, hydrofluoric acid and hydrochloric acid, sulfuric acid and acetic acid, sulfuric acid and hydrofluoric acid, and mixtures thereof a solution prepared by combining an acid soluble salt of iodine and an acid soluble salt of copper, and an acid corrosion inhibitor selected from the group consisting of acetylenic alcohols and mixtures thereof and mixtures of organic nitrogen compounds and acetylenic alcohols; and allowing said salts to form cuprous iodide in a concentration in the range of about 25 ppm by weight of treating acid to about 25,000 ppm by weight of treating acid. wherein said contacting of said surface is conducted at temperatures of up to about 450*F.

Claim 8

The method of inhibiting acid corrosion of ferrous metal surfaces at temperatures below about 150*F, which comprises The steps of: contacting a ferrous metal surface with an inhibited treating acid consisting essentially of: a solution prepared by adding an acid soluble salt of iodine and an acid soluble salt of copper to an acid selected from the group consisting of hydrochloric acid, sulfuric acid, mixtures of hydrochloric acid and acetic acid, hydrofluoric acid and hydrochloric acid, sulfuric acid and acetic acid, sulfuric acid and hydrofluoric acid, and mixtures thereof; and allowing said salts to form cuprous iodide, wherein said cuprous iodide is allowed to form in concentrations of from about 50 ppm to about 3,000 ppm by weight of acid, and further, wherein there is utilized an excess of from about 5 percent to about 15 percent by weight of said acid soluble salt of iodine.

Claim 12

The method of protecting a ferrous metal surface against acid corrosion which comprises the steps of: contacting said surface with an inhibited treating acid consisting essentially of a treating acid selected from the group consisting of hydrochloric acid, sulfuric acid, mixtures of hydrochloric acid and acetic acid, hydrofluoric acid and hydrochloric acid, sulfuric acid and acetic acid, sulfuric acid and hydrofluoric acid, and mixtures thereof, a solution prepared by combining an acid soluble salt of iodine, and an acid soluble salt of copper, wherein there is utilized an excess of from about 5 percent to about 15 percent by weight of said acid soluble salt of iodine, and an acid corrosion inhibitor selected from the group consisting of acetylenic alcohols and mixtures thereof; mixtures of organic nitrogen compounds and acetylenic alcohols; and organic nitrogen compounds selected from mono, di, and tri-alkyl amines having from two to six carbon atoms in each alkyl moiety, six membered N-heterocyclic amines, alkyl pyridines having from one to five nuclear alkyl substituents per pyridine moiety wherein said alkyl substituents have from one to 12 carbon atoms, rosin amines, and mixtures thereof, and allowing said salts to form cuprous iodide in a concentration in the range of about 25 ppm by weight of treating acid to about 25,000 ppm by weight of treating acid, wherein said contacting of said surface is conducted at temperatures of up to about 450*F.