焊管2025，Vol.48Issue(11)：1-10,10.DOI:10.19291/j.cnki.1001-3938.2025.11.001
SRB与二氧化碳对管材协同腐蚀研究现状与挑战
Research Status and Challenges of Synergistic Corrosion of Pipes by SRB and CO2
摘要
Abstract
In the fields of oil and gas transportation and marine engineering,steel pipes are exposed to complex environments containing sulfate-reducing bacteria(SRB)and CO2.Their synergistic corrosion effect significantly exacerbates the risk of material failure,threatens facility safety,and increases maintenance costs.The corrosion mechanisms of SRB and CO2,both individually and in synergy,have been systematically reviewed:SRB induces localized chemical and microbial corrosion through metabolic production of sulfides and biofilm formation,while the acidification caused by carbonic acid resulting from CO2 dissolution accelerates the electrochemical corrosion process.Under their synergistic action,the interactions of corrosion products(such as FeS and FeCO3),dynamic changes in local pH,and the coupling effects of biofilm-corrosion product films further lead to nonlinear growth of corrosion rates and aggravation of local damage such as pitting corrosion and stress corrosion cracking.Current studies have clarified the influences of environmental parameters(temperature,pH,SRB activity),material properties,and hydrodynamic factors on synergistic corrosion,but challenges still exist in long-term dynamic mechanisms,extreme environment adaptability,and optimization of protection technologies.In the future,it is necessary to deepen the research on the molecular mechanism at the microbial-electrochemistry interface,develop new corrosion-resistant materials and intelligent monitoring technologies,and promote the construction of multidisciplinary cross models to provide theoretical support for the formulation of engineering protection strategies and standards.关键词
SRB腐蚀/CO2腐蚀/协同腐蚀/防护技术/腐蚀预测/腐蚀监测Key words
SRB corrosion/CO2 corrosion/synergistic corrosion/anti-corrosion technology/corrosion prediction/corrosion monitoring分类
金属材料引用本文复制引用
刘荣欣,余晗,鲜林云,王维东,汪海涛,毕宗岳..SRB与二氧化碳对管材协同腐蚀研究现状与挑战[J].焊管,2025,48(11):1-10,10.基金项目
中国石油天然气集团有限公司"致密气及页岩气井连续管带压完井与采气一体化技术现场试验"(项目编号2022ZS26) （项目编号2022ZS26）
中国石油集团宝石管业有限公司"连续完井管柱关键技术(一期)"(项目编号25BSGYSG001). （一期）
