抗H<sub>2</sub>S腐蝕管線管的開發(fā)

抗H₂S腐蝕管線管的開發(fā)

摘要: 介紹了我國油氣田用戶對抗H₂S腐蝕管線管的需求情況。簡述了H₂S對鋼管的腐蝕機理,通過對不同生產(chǎn)工藝生產(chǎn)的不同鋼級或者組織狀態(tài)的管線管的抗HIC和抗SSC腐蝕性能的分析,選定生產(chǎn)抗腐蝕管線管的最佳化學成分和工藝路線。針對不同鋼級和不同工藝路線,確定低鋼級管線管采用直接熱軋及在線正火工藝,高鋼級管線管采用調(diào)質(zhì)熱處理工藝。

Abstract: The urgent demand by users from domestic oil/gas fields for the anti-H₂S corrosion linepipe is de-scribed,and so is the mechanism of H₂S corrosion on steel tubes.Based on the result of analyses of the HIC/SSC resistant properties of linepipes made with different rolling processes and in different steel grades and of different structures,the optimum chemical composition and manufacturing process flow of the anti-H₂S corrosion linepipe are determined.In the light of individual steel grade,different rolling processes and heat treatments are applied,i.e.,direct hot-rolling and in-line normalization are employed for low grade linepipes,and quenching-and-tempering process is for hi-grade ones.