石油学报 ›› 1996, Vol. 17 ›› Issue (1): 154-158.DOI: 10.7623/syxb199601022

• 石油工程 • 上一篇    下一篇

硫酸盐还原菌对油田套管腐蚀的研究

俞敦义, 彭芳明, 郑家燊   

  1. 华中理工大学
  • 收稿日期:1994-02-02 修回日期:1995-08-07 出版日期:1996-01-25 发布日期:2010-11-23
  • 作者简介:俞敦义,1961年毕业于华东师范大学化学系。现为华中理工大学副教授。通讯处:湖北省武汉市。邮政编码:430074。

A STUDY ON CORROSION OF CASING INDUCED BY SULFATE-REDUCING BACTERIA IN OIL FIELD

Yu Dunyi, Peng Fanming, Zheng Jiashen   

  1. Huazhong University of Science and Technology
  • Received:1994-02-02 Revised:1995-08-07 Online:1996-01-25 Published:2010-11-23

摘要: 主要研究温度对硫酸盐还原菌(SRB)生长的影响和SRB对油田套管的腐蚀作用,着重分析温度、Fe2+浓度对碳钢SRB腐蚀的影响.实验表明,在37℃时SRB的活性最强,对碳钢促进腐蚀,介质中Fe2+对碳钢SRB腐蚀影响还与温度有关:37℃时加速SRB腐蚀,60℃时则相反,这与腐蚀产物生成不同的硫化物有关.实验结果与中原油田文10-1井套管内腐蚀上部严重下部轻微一致.

关键词: 硫酸盐还原菌, 套管, 腐蚀试验, 腐蚀机理, 硫化物

Abstract: The influence of the temperature on the growing of sulfate-reducing bacteria (SRB) and the effection of SRB on corrosion of sheath-tube in oil field are studied in this paper.The influences of temperature and the concentration of Fe2+ on the corrosion of carbon steel induced by SRB are analysed emphatically.Experiment shows that the activation of SRB is the strongest at 37℃, the existence of SRB increases the corrosion to carbon steel,and,the effection of SRB corrosion by Fe2+ is related with the temperature: at 37℃, Fe2+ increase the SRB corrosion,but it reverses at 60℃.These results agree with the phenomenon of inner corrosion of sheath-tube of Wen 10-1 in the Zhongyuan oil field.

Key words: sulfate-reducing bacteria, sheath-tube, corrosion test, corrosion mechanism, sulfide