We investigated several steels containing up to 5% chromium (Cr) with respect to their carbon dioxide (CO2) corrosion resistance in oil and gas environments. Steels containing 3% or more Cr showed improved corrosion performance compared to Cr free steels in a wet CO2 environment. This phenomenon was made clear by immersion tests, field tests and loop tests. Furthermore, we have developed a 3% Cr Electric Resistance Weld (ERW) linepipe steel with good Heat Affected Zone (HAZ) toughness in a simulated field weld using laboratory methods.

Subject
Modeling, Flow loop, Corrosion rate, Flow velocity, Welding, Corrosion testing, Chemical composition, Corrosion products, Gas tungsten arc welding, Solutions, Steel, Corrosion resistance, Toughness
Keywords:
carbon dioxide corrosion, 3% Cr linepipe steel, ERW, GTAW
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2003
Association for Materials Protection and Performance (AMPP)
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