CAJ | 학술논문

要:结合清管作业研究了C平台至CEP平台混输海管的内腐蚀情况.C平台至CEP平台海管腐蚀为中度腐蚀,微生物腐蚀(MIC)和“垢下”腐蚀是腐蚀防护重点;清管能有效清除管壁沉积物,破坏硫酸盐还原菌(SRB)的生长环境,化学药剂抑制了硫酸盐还原菌(SRB)的繁殖;垢样分析知主要腐蚀产物为Fe2O3和FeS;海管入口处存在H2S,应对H2S腐蚀采取相应措施.清管作业可清除管壁结垢、降低微生物腐蚀(MIC)和“垢下”腐蚀.清管加药剂的处理模式,可确保海管内腐蚀控制效果.
요:결합청관작업연구료C평태지CEP평태혼수해관적내부식정황.C평태지CEP평태해관부식위중도부식,미생물부식(MIC)화“구하”부식시부식방호중점;청관능유효청제관벽침적물,파배류산염환원균(SRB)적생장배경,화학약제억제료류산염환원균(SRB)적번식;구양분석지주요부식산물위Fe2O3화FeS;해관입구처존재H2S,응대H2S부식채취상응조시.청관작업가청제관벽결구、강저미생물부식(MIC)화“구하”부식.청관가약제적처리모식,가학보해관내부식공제효과.
@@@@Pigging can clears the scaling wall,reduce the microbiologically influenced corrosion (MIC) and"dirt"corrosion. This paper studies the internal corrosion of gathering pipeline from C platform to CEP Platform by pigging operation. The following conclusions: the corrosion of subsea pipeline from C platform to the CEP platform is moderate. Corrosion protection focus is Microbiologically influenced corrosion (MIC) and the"dirt"corrosion. The pigging can effectively clear the wall sediments, destroy the environment for the growth of sulfate-reducing bacteria (SRB). Chemicals inhibit the reproduction of the sulfate-reducing bacteria (SRB), the main corrosion product is Fe2O3 and FeS by analysising scale sample .Presence H2S at the entrance of sea,should take the appropriate measures to responding to H2S corrosion . Recommend processing mode include pigging and agents to ensure the corrosion controlled.