Pitting Behavior of L245N Pipeline Steel by Microbiologically Influenced Corrosion in Shale Gas Produced Water with Dissolved CO2

被引:2
作者
Wang, Yanran [1 ]
Yu, Lei [2 ]
Tang, Yongfan [1 ]
Zhao, Wanwei [1 ]
Wu, Guiyang [1 ]
Wang, Yue [1 ]
机构
[1] PetroChina Southwest Oil & Gasfield Co, Res Inst Nat Cas Technol, Chengdu, Peoples R China
[2] PetroChina Southwest Oil & Gasfield Co, Chengdu, Peoples R China
关键词
CO2; corrosion; L245N pipeline steel; microbiologically influenced corrosion; pitting corrosion; SULFATE-REDUCING BACTERIA; IRON-OXIDIZING BACTERIA; CARBON-STEEL; SUPERCRITICAL CO2; X65; STEEL; MECHANISM; SEAWATER; BIOFILM; SOIL;
D O I
10.1007/s11665-022-07531-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The perforation of shale gas transportation pipelines occurred frequently in the form of pitting corrosion because of microbiologically influenced corrosion (MIC). In this study, the pitting corrosion behavior of L245N pipeline steel in shale gas produced water with sulfate reducing bacteria (SRB) and iron oxidizing bacteria (IOB) was studied. The results indicate that the development of pitting corrosion can be divided into three stages. The compact biofilm was formed in the second stage and facilitated the appearance of pits. The major mechanism of pit growth was electron uptake from elemental iron by sessile SRB settled in the biofilm. The corrosion prevention strategy was briefly discussed.
引用
收藏
页码:5823 / 5836
页数:14
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