焊管2025，Vol.48Issue(2)：8-14,7.DOI:10.19291/j.cnki.1001-3938.2025.02.002
CO2-SRB共存环境下页岩气地面管材冲刷腐蚀评价研究
Research on Corrosion Assessment of Shale Gas Ground Pipelines in CO2-SRB Coexistence Environment
摘要
Abstract
To explore causes of corrosion perforation in shale gas surface pipelines under CO2 rich conditions and bacteria,a high temperature and pressure autoclave experimental setup was utilized to investigate corrosion resistance of L360N,antibacterial steel,and nitrogen-doped L360N under simulated conditions.Surface morphology and corrosion depth of the samples were analyzed using scanning electron microscopy,energy dispersive spectroscopy,and laser confocal microscopy.Results indicate that the erosion rates of L360N,nitrogen-doped L360N,and antibacterial steel are 0.301 6 mm/a,0.272 6 mm/a,and 0.136 3 mm/a,respectively,with erosion depths of 30.215 μm,23.788 μm,and 13.803 μm.Corrosion products are FeS and FeCO3.Shear of the corrosion product film by the fluid will promote the erosion of the corrosion product.The corrosion resistance performance of the three materials from strong to weak is antibacterial steel,nitrogen-doped L360N,L360N.The relevant research results provide data support and theoretical basis for the field of shale gas pipeline corrosion prevention and control.关键词
页岩气/地面管线/细菌腐蚀Key words
shale gas/ground pipeline/bacterial corrosion分类
能源科技引用本文复制引用
霍绍全,王永波,郑春焰,曾德智,李乾..CO2-SRB共存环境下页岩气地面管材冲刷腐蚀评价研究[J].焊管,2025,48(2):8-14,7.基金项目
中国石油天然气股份有限公司科技项目"页岩气规模增储上产与勘探开发技术研究"(项目编号2023ZZ21) （项目编号2023ZZ21）
中国石油西南油气田分公司科学研究与技术开发项目"页岩气田低压开采技术与腐蚀防护研究"(项目编号20230305-05). （项目编号20230305-05）
