Analysis of Reasons for Subsea Pipeline Perforation
摘 要
采用宏、微观形貌观察,化学成分、腐蚀产物分析等方法对某油田平台注水穿孔海底管道的穿孔原因进行了分析。结果表明:穿孔弯管段碳含量超标,管道内壁疏松的腐蚀产物为Fe2O3和Fe3O4,是氧腐蚀产物;弯管段穿孔由冲蚀和垢下腐蚀共同作用引起,垢层下的穿孔则是由于垢下腐蚀导致的。
Abstract
Macrograph and microstructure observation, chemical composition and corrosion product analysis were used to analyze the reasons for subsea pipeline perforation in an oil field platform. The results show that the carbon content of the perforated elbow exceeded standard, the lose corrosion products in the inner surface of subsea pipeline were composed of Fe2O3 and Fe3O4. The perforation reason of elbow was erosion and under-deposit corrosion. The perforation reason of subsea pipeline covered by fouling layer was under-deposit corrosion.
中图分类号 TG172 DOI 10.11973/fsyfh-201608017
所属栏目 失效分析
基金项目
收稿日期 2016/4/15
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备注徐一龙(1981-),工程师,硕士,主要从事海洋钻井工艺技术的研究
引用该论文: XU Yi-long,WEI Long-gui,LIU Zhi-qin,SUN Ai-ping,LIN Jun,XUE Yan,LI Ting,ZHANG Jia-mei,ZHANG Xiao-dong,LEI Dan. Analysis of Reasons for Subsea Pipeline Perforation[J]. Corrosion & Protection, 2016, 37(8): 683
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参考文献
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【5】张晓波. 外部电位对碳钢局部腐蚀不同阶段闭塞区行为的影响[J]. 淮海工学院学报,2001,10(3):8-12.
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【7】毛红艳,蔡庆伍,武会宾,等. 合金元素和碳含量对E36船板钢腐蚀行为的影响[J]. 腐蚀与防护,2013,34(6):499-502.
【8】王力伟,杜翠薇,刘智勇,等. Fe3C和珠光体对低碳铁素体钢腐蚀电化学行为的影响[J]. 金属学报,2011,47(10):1227-1232.
【9】刘会,赵国仙,韩勇,等. Cl-对油套管用P110钢腐蚀速率的影响[J]. 石油矿场机械,2008,37(11):44-48.
【10】朱元良. 碳钢垢下腐蚀行为与缓蚀机理研究[D]. 武汉:华中科技大学,2008:3-5.
【11】SARIN P,SNOEYINK V L,BEBEE J,et al. Physico-chemical characteristics of corrosion scales in old iron pipes[J]. Water Research,2001,35:2961-2969.
【12】LIN J P,MARK E,ROBERT A. Study of corrosion material accumulated on the inner wall of steel water pipe[J]. Corrosion Science,2001,43:2065-2081.
【13】TANG Z J,HONG S K,XIAO W Z,et al. Characteristics of iron corrosion scales established under blending of ground, surface, and saline waters and their impacts on iron release in the pipe distribution system[J]. Corrosion Science,2006,48:322-342.
【14】谭伟,徐滨士,韩文政,等. 水陆装甲车车体锈层分析[J]. 腐蚀科学与防护术,2003,15(2):113-116.
【15】BROWN B F. Concept of the occluded corrosion cell[J]. Corrosion,1970,26(8):249-250.
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【17】GAN Y,LI Y,LIN H C. Experimental studies on the local corrosion of low alloy steels in 3.5% NaCl[J]. Corrosion Science,2001,43:397-411.
【18】方坦纳,格林. 腐蚀工程[M]. 左景伊,译. 北京:化学工业出版社,1982:74-79.
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