H2S分压对镍基合金G3应力腐蚀开裂的影响  

Effects of H2S Partial Pressure on Stress Corrosion Cracking of Nickel-based Alloy G3

作　　者：陈松 计玲 CHEN Song;JI Ling(Yanchang Petroleum Group Pipeline Company,Yan’an 716000,China)

机构地区：[1]陕西延长石油(集团)管道运输公司

出　　处：《石油化工腐蚀与防护》2020年第1期17-19,共3页Corrosion & Protection In Petrochemical Industry

摘　　要：针对高含H2S和CO2油气田开发过程中油井套管腐蚀严重的问题,探讨了镍基合金在H2S-CO2-Cl^-环境中的腐蚀机理。采用慢应变速率拉伸试验法(SSRT)研究了G3镍基合金在高含H2S-CO2-Cl^-环境中的腐蚀情况,特别是H2S分压对应力腐蚀开裂(SCC)的影响。For serious corrosion of tubing and casing occurred in the oil and gas field with high H2 S and CO2 contents, corrosion mechanism of nickel-based alloy in H2S-CO2-Cl- environment was discussed. Slow strain rate tensile test(SSRT) was used to study the corrosion of nickel-based alloy G3 in high H2S-CO2 environment, especially the effects of H2S partial pressure on stress corrosion cracking(SCC).

关 键 词：镍基合金G3 慢应变速率拉伸试验 应力腐蚀开裂 

分 类 号：TE983[石油与天然气工程—石油机械设备]