油田某注水井油管腐蚀失效分析  

Failure Analysis of Tubing Corrosion in Water Injection Well

作　　者：杜晓杰 杨阳 杨中娜 冯电稳 冯云 Du Xiaojie;Yang Yang;Yang Zhongna;Feng Dianwen;Feng Yun(CNOOC(Tianjin)Pipeline Engineering Technology Co.,Ltd.,Tianjin 300452,China;Tianjin Beihai Oil Human Resource Consulting Service Co.Ltd.,Tianjin,300452,China)

机构地区：[1]中海油(天津)管道工程技术有限公司,天津300452 [2]天津北海油人力资源咨询服务有限公司,天津300452

出　　处：《涂层与防护》2021年第4期18-22,23,24,28,共8页Coating and Protection

摘　　要：采用宏观分析、材质成分分析、金相组织分析、腐蚀产物分析、腐蚀模拟试验等方法对某注水井油管的腐蚀穿孔原因进行了失效分析。结果表明,油管中的D类厚系超尺寸夹杂物造成了材料的破坏。该井水质易产生CaCO_(3)、SrSO_(4)、BaSO_(4)、FeCO_(3)垢,并附在油管内壁底部,产生了较严重的垢下腐蚀,进而导致内穿孔,某些位置则由于外腐蚀导致穿孔。A failure analysis of the tubing perforation of water injection well pipe is carried out by macro-analysis,material composition analysis,gold phase tissue analysis,corrosion product analysis and corrosion simulation test.The results show that the production water is prone to form CaCO_(3),SrSO_(4),BaSO_(4),FeCO_(3) scales.These scales attach to the bottom of the inner wall of the tringe,resulting in more serious corrosion under the scales,which leads to internal perforation.In addition,some positions are perforated due to the external corrosion.

关 键 词：注水井油管 腐蚀穿孔 垢下腐蚀 失效分析 

分 类 号：TQ630.72[化学工程—精细化工]