Effect of H2S Partial Pressure on Stress Corrosion Cracking Behavior of 13Cr Stainless Steel in Annulus Environment Around CO2 Injection Well

Electrochemical characteristics and stress corrosion cracking (SCC) behavior of 13Cr stainless steel were investigated by electrochemical measurements, U-bent specimen immersion test and surface analysis technique in an artificial solution with an autoclave, which aimed to simu- late the annulus environment around CO2 injection well. The results showed that annulus solution around injection well was a complicated H2S-CO2-Cl