钻杆腐蚀性能对比分析

Comparative Analysis of Anti-corrosion Behaviors of Drill Pipe

摘要: 采用氧腐蚀试验、CO₂腐蚀试验、硫化物应力腐蚀试验，对比分析36CrNiMo4与4130H两种材质钻杆的抗腐蚀性能。分析结果表明：36CrNiMo4与4130H两种材质钻杆的氧腐蚀速率基本相同；36CrNiMo4材质钻杆的抗CO₂腐蚀性能优于4130H材质，但抗硫化物应力腐蚀开裂性能明显低于4130H材质。

Abstract: Comparative analysis of the anti-corrosion behaviors of the drill pipes made of the 36CrNiMo4 and the 4130H steels are conducted by means of oxygen corrosion test，CO₂ corrosion test and SSC test.The test results shows that the oxygen corrosion rates of the 36CrNiMo4 pipe and the 4130H pipe are basically the same，and that the CO₂ corrosion resistance of the 36CrNiMo4 pipe is better than that of the 4130H pipe，whereas the SSC resistance of the former is remarkably less than that of the later.