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孟选刚, 吴玟, 彭芬, 杨战伟, 王辽, 高莹, 王丽伟. 某超深井油管腐蚀开裂分析及对策研究[J]. 钻井液与完井液, 2021, 38(3): 380-384. doi: 10.3969/j.issn.1001-5620.2021.03.021
引用本文: 孟选刚, 吴玟, 彭芬, 杨战伟, 王辽, 高莹, 王丽伟. 某超深井油管腐蚀开裂分析及对策研究[J]. 钻井液与完井液, 2021, 38(3): 380-384. doi: 10.3969/j.issn.1001-5620.2021.03.021
MENG Xuangang, WU Wen, PENG Fen, YANG Zhanwei, WANG Liao, GAO Ying, WANG Liwei. Analysis and Countermeasures of Corrosion Cracking of an Oil Pipe[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(3): 380-384. doi: 10.3969/j.issn.1001-5620.2021.03.021
Citation: MENG Xuangang, WU Wen, PENG Fen, YANG Zhanwei, WANG Liao, GAO Ying, WANG Liwei. Analysis and Countermeasures of Corrosion Cracking of an Oil Pipe[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(3): 380-384. doi: 10.3969/j.issn.1001-5620.2021.03.021

某超深井油管腐蚀开裂分析及对策研究

doi: 10.3969/j.issn.1001-5620.2021.03.021
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    作者简介:
  • 中图分类号: TE357.12

Analysis and Countermeasures of Corrosion Cracking of an Oil Pipe

  • 摘要: 现有的酸液缓蚀剂对消除高温环境下酸性高浓度盐水对超级13Cr材质油管的应力腐蚀是无效的,实际生产应用中导致了应力腐蚀开裂,需研发新型缓蚀剂解决高温酸液及高温酸性高浓度盐水的应力腐蚀。研究已有缓蚀剂缓蚀机理的基础上,分析了其不足之处,提出了聚合成膜的缓蚀机理,即利用一些化合物在酸液环境中在一定条件下相互反应,生成含至少2个活性功能团中间产物,可在金属表面快速生成聚合物膜。基于该理论,研发了新型缓蚀剂,在高温高压动态腐蚀速率测量仪测试,180℃下,15%盐酸腐蚀速率最低为16.0 g/m2·h;四点弯曲法测试证实该缓蚀剂显著消除了酸性高浓度盐水在高温环境中对超级13Cr材质试片产生的应力腐蚀开裂。新型缓蚀剂可有效减少超级13Cr材质油管在超深高温高压气井中产生的应力腐蚀开裂。

     

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  • 收稿日期:  2021-01-30

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