經(jīng)濟型抗H<sub>2</sub>S+CO<sub>2</sub>腐蝕油管BG110S-2Cr開發(fā)

經(jīng)濟型抗H₂S+CO₂腐蝕油管BG110S-2Cr開發(fā)

摘要: 根據(jù)Cr元素對低合金鋼力學性能的影響規(guī)律,在3Cr系列經(jīng)濟型抗H₂S和（或）CO₂腐蝕鋼種基礎上,成功開發(fā)出110kpsi（758MPa）鋼級經(jīng)濟型抗H₂S+CO₂腐蝕油管BG110S-2Cr。試驗表明,大生產(chǎn)BG110S-2Cr油管具有優(yōu)良的抗H₂S應力腐蝕開裂（SSC）性能。與常規(guī)P110油套管相比,在模擬油田典型腐蝕介質(zhì)中其CO₂腐蝕速率降低了一半以上。

Abstract: On the basis of Baosteel 3Cr series economical oil pipe steels which are used to resist H₂S and（or）CO₂ corrosion and according to the effect of Cr content on low alloy steels’mechanical properties, economical 110kpsi（758MPa）grade oil tubing BG110S-2Cr, which has good H₂S+CO₂ corrosion-resistant performance, has been developed successfully. The results showed that the mass produced tubing owned excellent ability of hydrogen sulphide stress corrosion（SSC）resistance. Furthermore, In simulated media of typical oil field, CO₂ corrosion velocity of BG110S-2Cr was less than half that of common P110 tubing and casing.