埋地输气管道腐蚀缺陷分析及修复对策

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作者单位:: 天津大港油田天然气公司, 天津 300380
Dagang Oilfield Natural Gas Company, Tianjin 300380, China

关键词:: 输气管道;腐蚀缺陷;修复;对策
natural gas pipeline;corrosion defect;repair;countermeasure

摘要:: 文章以天津大港油田至沧州的D529mm×7mm管道投产后的1999年至2008年的历年大修为例,分析了埋地输气管道腐蚀因素和特点,在总结该管道防腐层历年大修的基础上,根据管道腐蚀程度不同,分别提出采用防腐层更新或换管、采用内衬高密度聚乙烯管、采用100%固含量聚氨酯涂料、采用碳纤维复合修复和Clockspring复合管道修复等技术对管道进行修复和补强的方法,同时对今后管道的日常管理及防腐层大修提出了建议。
In this paper, annual overhaul of the D 529 mm × 7 mm natural gas pipeline from Tianjin Dagang Oilfield to Cangzhou during 1999 to 2008 is taken as an example to analyze corrosion factors and characteristics of buried gas pipelines. Based on the summary of the pipeline coating annual overhaul in the past 10 years, kinds of commonly used repair and strengthening methods are suggested, i.e. replacement of pipes or coatings, repair using HDPE lining pipe, carbon fiber composite pipe or Clockspring composite pipe, use of 100% solid content polyurethane coating. At the same time, constructive proposals are also offered for the future routine pipeline management and coating overhaul

2009,03(03): 41-42 收稿日期：2008-8-25

分类号：TE988.2

作者简介：王悦（1981-），女，陕西西安人，助理工程师，2004年毕业于西安石油大学油气储运专业，从事油气储运方面的技术工作。