常州大学学报（自然科学版）2024，Vol.36Issue(2)：19-30,12.DOI:10.3969/j.issn.2095-0411.2024.02.003
氯离子质量浓度对N80稠油管柱腐蚀机理研究
Effect of Cl- concentration on the corrosion mechanism for N80 tubing steel
摘要
Abstract
This article used a high-temperature and high-pressure Hastelloy reactor to simulate the harsh corrosion environment.The effects of different Cl-concentrations(0,5 000,10 000,15 000 mg/L)on the corrosion mechanism of N80 tubing steel in the extraction fluid was studied.The corrosion rate,corrosion morphology and corrosion film structure of N80 tubing steel was analyzed using a combination of macroscopic and microscopic means.The variability of corrosion in different Cl-content environments was clarified.The results showed that the corrosion rate rose significantly with the elevation of Cl-concentration,and the pits on the surface of the corrosion products gradually increased.The large amount of Cl-enrichment destroyed the originally dense corrosion film,exposing N80 tubing steel to the corrosion solution.The presence of trace O2 made the concentration difference battery occur,accelerating the corrosion process.关键词
氯离子质量浓度/N80油管钢/点蚀/腐蚀产物膜Key words
Cl-concentration/N80 tubing steel/corrosion behavior/corrosion film分类
能源科技引用本文复制引用
赵永刚,李欢,杨杰,张禹,何岩峰,雷云,彭浩平..氯离子质量浓度对N80稠油管柱腐蚀机理研究[J].常州大学学报（自然科学版）,2024,36(2):19-30,12.基金项目
中国石油-常州大学创新联合体资助项目(2021DQ06) （2021DQ06）
国家自然科学基金资助项目(52201064). （52201064）
