L360管焊缝的耐蚀性能  

Study on Anti-Corrosion of L360 Pipe Welds in High Sour Gas Wells

作　　者：陈洪杰[1] 毛书军[1] 孙腾胜[1] 汪沈阳[1] 王丽萍[1] 

机构地区：[1]中国石油化工股份有限公司中原油田分公司,河南濮阳457001

出　　处：《石油化工腐蚀与防护》2011年第1期14-16,共3页Corrosion & Protection In Petrochemical Industry

摘　　要：模拟高酸性气田集输系统条件,通过电化学腐蚀失重、氢致开裂和硫化物应力开裂试验对L360管道焊缝进行了耐蚀性研究。结果表明,添加缓蚀剂前后焊缝的腐蚀速率分别为0.437 mm/a和0.102 mm/a,腐蚀产物包括FeCO_3,FeS,FeO(OH)和FeO,焊缝没有出现氢致开裂和硫化物应力开裂,但发现少许氢鼓泡。Under the conditions of simulated gas-gathering line system of high sour gas well, the anti-corrosion of L360 pipe welds was studied through the electrochemical test, hydrogen induced corrosion （HIC） test and sulfide stress cracking （SSC） test. The re- sults indicated the that corrosion rates before and after corrosion inhibitor addition were 0.437mnda and 0.102mm/a respectively, and the corrosion products were FeCO3, FeS, FeO （.OH）and FeO. No HIC and SSC cracks were found in the pipe welds, but some hydrogen blistering were found on the surface.

关 键 词：L360 焊缝 高酸性气田 腐蚀 

分 类 号：TG441.7[金属学及工艺—焊接] TG174.3