Inhibition Effect of Some Inhibitors on Super 13Cr Steel Corrosion in Completion Fluid

摘要

The inhibition effect of some inhibitors on super 13Cr stainless steel corrosion in CaClsub2/sub completion fluids with 1.0MPa COsub2/sub was investigated. The results indicated that the super 13Cr stainless steel was susceptible to uniform and stress corrosion cracking (SCC) without inhibitors. After addition urotropine, the uniform corrosion was inhibited, and the SCC sensitivity of super 13Cr steel decreased. Electrochemical noise results indicated that the noise resistance increased obviously after addition urotropine.