[1]杨 阳,罗 懿,樊荣兴,等.某海洋平台注水立管腐蚀穿孔失效分析[J].焊管,2020,43(3):50-55.[doi:10.19291/j.cnki.1001-3938.2020.03.010]
 YANG Yang,LUO Yi,FAN Rongxing,et al.Failure Analysis of Corrosion Perforation of Water Injection Riser of an Offshore Platform[J].,2020,43(3):50-55.[doi:10.19291/j.cnki.1001-3938.2020.03.010]
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某海洋平台注水立管腐蚀穿孔失效分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
43
期数:
2020年第3期
页码:
50-55
栏目:
经验交流
出版日期:
2020-03-28

文章信息/Info

Title:
Failure Analysis of Corrosion Perforation of 
Water Injection Riser of an Offshore Platform
文章编号:
10.19291/j.cnki.1001-3938.2020.03.010
作者:
杨 阳1罗 懿1樊荣兴2杨中娜1张传旭1
1. 中海油(天津)管道工程技术有限公司,天津 300452;
2. 中海石油(中国)有限公司天津分公司,天津 300450
Author(s):
YANG Yang1 LUO Yi1 FAN Rongxing2 YANG Zhongna1 ZHANG Chuanxu1
1. CNOOC(Tianjin) Pipeline Engineering Technology Co., Ltd., Tianjin 300452, China;
2. CNOOC(China) Co., Ltd., Tianjin Branch, Tianjin 300450, China
关键词:
腐蚀注水立管穿孔失效分析
Keywords:
corrosion water injection riser perforation failure analysis
分类号:
TG113.23
DOI:
10.19291/j.cnki.1001-3938.2020.03.010
文献标志码:
B
摘要:
针对某海洋平台注水立管腐蚀穿孔失效问题,通过宏观分析、尺寸测量、材质性能评价、微观分析及腐蚀产物分析等技术手段,并结合该立管实际工况,分析立管穿孔失效原因。结果表明,立管安装造成部分防腐涂层破损,由于立管与护管连接结构所致,使得立管涂层破损部位长期处于海洋大气环境,造成局部腐蚀严重,导致穿孔失效。针对该类管线,建议避免类似立管结构,立管与护管之间环空应与海水或海洋大气隔绝;考虑采用气胀封堵加疏水水泥的防护技术,外部切口处采用补强包覆技术。
Abstract:
In view of the corrosion perforation failure of the water injection riser of the offshore platform, the causes of the perforation failure of the riser are analyzed by means of the macro analysis, size measurement, material performance evaluation, micro analysis and corrosion product analysis, combined with the actual working conditions of the riser. The results show that the installation of the riser results in the damage of some anti-corrosion coating, and the damaged part of the riser coating is in the marine atmospheric environment for a long time due to the connection structure between the riser and the protective pipe, which causes the serious local corrosion, leading to the perforation failure. For this kind of pipeline, it is suggested to avoid the similar riser structure, and the annulus between the riser and the protective pipe should be isolated from the sea water or the marine atmosphere; the protective technology of the air expansion plugging and the hydrophobic cement should be considered, and the reinforcement coating technology should be used at the external incision.

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备注/Memo

备注/Memo:
收稿时间:2019-07-26
修改稿收稿时间:2020-02-27
作者简介:杨 阳(1987—),男,失效分析工程师,主要从事于海管腐蚀、断裂失效分析及海管检测评估工作。
更新日期/Last Update: 2020-04-17