| N80油井注水管腐蚀失效分析 |
| |
| 引用本文： | 张俊,李连波,石志强.N80油井注水管腐蚀失效分析[J].腐蚀与防护,2008,29(4):226-228. |
| |
| 作者姓名： | 张俊 李连波 石志强 |
| |
| 作者单位： | 中国石油大学(华东)机电工程学院,山东东营,257061 |
| |
| 摘 要： | 对一例腐蚀穿孔的表面氮化N80注水管进行了腐蚀产物X射线衍射分析和金相组织分析,结果表明失效注水管的腐蚀产物是Fe3O4和FeOOH,钢管近内壁母材存在大量的非金属夹杂物和带状组织,内壁表面粗糙度较大导致渗氮层不连续,是造成注水管发生严重氧腐蚀的主要原因,油井污水内含有大量的氯离子对注水管的腐蚀穿孔起到加速作用。
|
| 关 键 词： | 注水管 氮化 腐蚀 失效分析 |
| 文章编号： | 1005-748X(2008)04-0226-03 |
| 修稿时间： | 2007年4月4日 |
Analyses of Corrosion Failure of N80 Water Injection Tubing |
| |
| ZHANG Jun,LI Lian-bo,SHI Zhi-qiang.Analyses of Corrosion Failure of N80 Water Injection Tubing[J].Corrosion & Protection,2008,29(4):226-228. |
| |
| Authors: | ZHANG Jun LI Lian-bo SHI Zhi-qiang |
| |
| Abstract: | A failed surface nitrided N80 water injection tubing was analyzed through microstructure examination and X-ray diffraction(XRD).The results showed that the corrosion products were Fe3O4 and FeOOH.There were a lot of non-metallic inclusions and banded structure in the metal adjacent to the inner surface of the tubing,and rough surface of the internal wall resulted in a discontinuous nitriding layer.Those might be the main reasons of the tubing corrosion.A mass of Cl-in the contaminated well water also accelerated the corrosion of the tubing. |
| |
| Keywords: | water injection tubing nitriding corrosion failure analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
