DIMERCAPTOTHIADIAZOLES TO PREVENT CORROSION OF MILD STEEL BY ACID GASES IN OIL AND GAS PRODUCTS

摘要

Corrosion inhibitor compositions containing at least one sulfur compound and/or at least one aqueous-soluble salt of a sulfur compound inhibit or prevent mild steel corrosion by an acid gas such carbon dioxide (CO2) and/or hydrogen sulfide (H2S) in oil and gas production processes. The sulfur compound may be a compound comprising at least three sulfur atoms, at least one of which is a thioether functional group. One suitable, but non-limiting, sulfur compound having at least three carbon atoms is 2,5-dimercapto-1,3,4-thiadiazole and salts thereof. The pH of the corrosion inhibitor composition may be optionally adjusted to be within about 5 to about 10 using an alkali metal hydroxide and/or an amine.