摘要
深海油气管道的安全运行对海洋油气开发至关重要。深海环境较为恶劣,对管线钢腐蚀行为的影响十分复杂。通过综述管线钢在静水压力、溶解氧、流动冲刷3种主要深海环境因素中腐蚀行为的研究现状,重点剖析了静水压力对离子活性、腐蚀产物组成、点蚀、应力腐蚀开裂以及腐蚀电化学过程中热力学与动力学行为的影响,并厘清了溶解氧对电化学阴极反应中的氧去极化与氢去极化、流动冲刷中冲刷与腐蚀之间的关系。总结了3种主要因素对腐蚀行为的影响规律,并讨论了静水压力与溶解氧、流动冲刷与溶解氧、静水压力与流动冲刷耦合作用对管线钢腐蚀行为的影响。在此基础上,对未来关于管线钢多因素耦合腐蚀行为的研究方向与重点进行了展望。(图4,表1,参133)
The safe operation of deep-sea oil and gas pipelines is important for the development of offshore oil and gas.The harsh deep-sea environment has a very complex impact on the corrosion behavior of pipeline steel.This study reviewed the research status on the corrosion behavior of pipeline steel affected by three main factors in deep-sea environment,i.e.,the hydrostatic pressure,dissolved oxygen and flow erosion.The focuses of the study were the influence of hydrostatic pressure on the ionic activity,corrosion product composition,pitting corrosion and stress corrosion cracking of pipeline steel,as well as the thermodynamics and kinetics of electrochemical corrosion.Then,the relationship of dissolved oxygen with the oxygen and hydrogen depolarization in electrochemical cathodic reactions,as well as that of pipeline steel erosion and corrosion with the flow erosion,was clarified.In addition,the influence rule of the three factors on the corrosion behavior was summarized.Discussion was carried out on the influence of the coupling effects between the hydrostatic pressure and the dissolved oxygen,between the flow erosion and the dissolved oxygen and between the hydrostatic pressure and the flow erosion on the corrosion behavior of pipeline steel.Finally,future research direction and focus on multi-factor coupled corrosion behavior of pipeline steel were prospected.(4 Figures,1 Table,133 References)
作者
任鹏炜
唐兴颖
覃祖安
陈思思
杨健乔
REN Pengwei;TANG Xingying;QIN Zu'an;CHEN Sisi;YANG Jianqiao(School of Marine Sciences,Guangxi University//Guangxi Laboratory on the Study of Coral Reefs in the South China Sea;School of Resources,Environment and Materials,Guangxi University;School of Energy and Power Engineering,Xi'an Jiaotong University)
出处
《油气储运》
CAS
北大核心
2023年第5期492-508,共17页
Oil & Gas Storage and Transportation
基金
国家自然科学基金资助项目“超临界水氧化环境中镍基合金磷化腐蚀膜形成机理及腐蚀行为研究”,22068003
广西科技重大专项“复杂海洋环境下高抗蚀建设工程材料开发与示范应用”,桂科AA18242007。
关键词
深海环境
静水压力
溶解氧
冲刷
管线钢
deep-sea environment
hydrostatic pressure
dissolved oxygen
erosion
pipeline steel
