硫酸盐还原菌作用下Cl-浓度对20号钢在高矿化度油田卤水中腐蚀行为的影响
Influence of Chloride Concentration on Corrosion Behavior of 20# Steel in High Salinity Oilfield Brine Containing Sulphate-reducing Bacteria Media
摘 要
采用腐蚀挂片和电化学试验研究了20号钢在不同Cl-浓度的高矿化度溶液中的腐蚀行为。结果表明,20号钢在高矿化度条件下不利于硫酸盐还原菌(SRB)的繁殖,在高浓度盐溶液中微生物腐蚀倾向低,钢的表面未产生微生物膜,以全面腐蚀为主。在低浓度的盐溶液中发生微生物腐蚀倾向大,且能形成不连续的、分布不均匀的微生物膜。
硫酸盐还原菌
电化学测试
Cl-浓度
microbiological corrosion
sulfate-reducing bacteria
electrochemical test
Cl- content
Abstract
Corrosion coupon test and electrochemical experiment were used to research the corrosion behavior of 20# steel in high salinity solutions with different concentrations of Cl-. The results showed that 20# steel in high salinity conditions was not conductive to the growth and reproduction of SRB. Microbial corrosion tendency was low on the surface of 20# steel in high concentration salt solution. And there was no microbial film formed. Microbial corrosion tendency was high in low salinity conditions and un-continuous,microbial membrane of uneven distribution was formed.
中图分类号 TG174
所属栏目 试验研究
基金项目 国家自然科学基金(41276074)
收稿日期 2014/8/3
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联系人作者李言涛(ytli98@163.com)
备注李言涛(1968-),研究员,博士,从事海洋金属与防护研究,0532-82898742.
引用该论文: YU Yong,WANG Yuan-chun,FAN Xue-hua,YANG Li-hui,LI Yan-tao. Influence of Chloride Concentration on Corrosion Behavior of 20# Steel in High Salinity Oilfield Brine Containing Sulphate-reducing Bacteria Media[J]. Corrosion & Protection, 2015, 36(1): 45
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参考文献
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【8】GB/T 16545-1996金属和合金的腐蚀腐蚀试样上腐蚀产物的清除[S].
【2】赵海,李安命,万波,等. 一株中度嗜盐硫酸盐还原菌的分离及生理特性研究[J].应用与环境生物学报,1995,1(1):61-67.
【3】SALVAREZZA R C,VIDELLA H A,ARVIA A J. The electrochemical behaviour of mild steel in phosphate-borate-sulphide solutions[J].Corrosion Science,1983,23:717-732.
【4】SALVAREZZA R C,VIDELLA H A. Passivity breakdown of mild steelin seawaterin the presence of sulfate reducing bacterial[J].Corrosion,1980,36:550-554.
【5】RINGAS C,ROBOINSON F P A. Corrosion of stainless steel by SULFATE-reducing bacteria-electrochemical techniques[J].Corrosion,1988,44:386-396.
【6】STAROSVETSKY D,KHASELEV O,STAROSVETSKY J. Effect of iron exposure in SRB,media on pitting initiation[J].Corrosion Science,2000,42:345-359.
【7】POSTGATE J R. The sulphate-reducing bacteria[M].Cambridge:Cambridge University Press,1984.
【8】GB/T 16545-1996金属和合金的腐蚀腐蚀试样上腐蚀产物的清除[S].
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