The global market for corrosion-resistant alloy oil casing is expected to exceed $1 billion by 2022

Corrosion Resistant Alloy Oil Tubing (OCTG) is the highest grade of steel used to manufacture OCTG tubes.Due to the technical complexity of the commercial production of these steel grades, only a few producers have entered the market.These grades range from dual phase steel (22% chromium) to super dual phase steel (25Cr) to nickel alloy (up to 28% chromium, but also quite high nickel content, over 29%).The advantages of these steel grades in corrosion resistance and protection against well failure enable them to be used in the most extreme drilling environments with high hydrogen sulfide and carbon dioxide content, often accompanied by high pressure and high temperature (HPHT) conditions.Nickel-alloy OCTG is widely used in sulphur-bearing Wells in the Persian Gulf and Central Asia (Kazakhstan), while dual-phase steels are more common in Wells offshore in Brazil, West Africa, Australia and Southeast Asia.In addition, all of these corrosion resistant alloy steel grades are common in Wells in the North Sea, the Gulf of Mexico and Australia, where there are high-pressure and high-temperature Wells.Conversely, although the United States and Russia are two of the largest OCTG markets, because they do not have extreme drilling environments, these OCTG steel grades are not commonly used in onshore drilling activities in those markets.