摘要
采用渗氮方法提高钢材耐蚀性能近年来有一定突破 ,但对J5 5渗氮管材尚缺乏系统研究。对J 5 5渗氮套管进行了质量检测 ,并用电化学方法研究了渗氮套管在不同受拉力下和套管渗氮层局部破损情况下的耐蚀性能 ,结合应力腐蚀试验和三点弯曲试验的数据 ,提出了渗氮套管的适用条件 :井深不大于 170 0m ,弯曲度小于 5°/ 30m ,为渗氮套管下井试验提供了依据。
There are some development in improving the corrosion resistance of steel by nitriding technology, systemic investigation are still lack for J55 nitriding casing tube. The quality detections of nitriding casing tubes were carried out, at the same time the anticorrosion properties under local damage and different tension was studied by electrochemical methods. Combining the data of stress corrosion crack and three-point bending test, the applicable conditions of nitriding casing tube are that the well depth is not more than 1700 m and camber is less than 5°/30 m, which offer reference to the downhole test of nitriding casing tubes in Changqing oilfield.
出处
《材料保护》
CAS
CSCD
北大核心
2004年第8期36-38,共3页
Materials Protection
关键词
腐蚀
J55油井套管
电化学研究
耐蚀性能
corrosion
J55 oil well casing tube
electrochemical study
corrosion resistance
