东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (11): 1069-1071.DOI: -

• 论著 • 上一篇    下一篇

常用油管钢的CO_2局部腐蚀速率

李建平;赵国仙;郝士明;路民旭   

  1. 东北大学材料与冶金学院;中国石油管材研究所;东北大学材料与冶金学院;北京科技大学材料科学与工程学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-11-15 发布日期:2013-06-24
  • 通讯作者: Li, J.-P.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50231020)

Local corrosion rate of conventional tubing steels

Li, Jian-Ping (1); Zhao, Guo-Xian (2); Hao, Shi-Ming (1); Lu, Min-Xu (3)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Tubular Goods Res. Ctr. of CNPC, Xi'an 710065, China; (3) Coll. of Mat. Sci. and Eng., Univ. of Sci. and Technol. Beijing, Beijing 100083, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-11-15 Published:2013-06-24
  • Contact: Li, J.-P.
  • About author:-
  • Supported by:
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摘要： 通过模拟国内某油田腐蚀环境中的高温高压试验,研究了N80,P105,SM110油管钢的局部腐蚀速率·结果表明,N80,P105和SM110油管钢均表现出了较高的腐蚀速率·在影响局部腐蚀速率的各个因素中,流速和油水比对局部腐蚀速率的影响最明显,对比N80钢,含水100%的腐蚀速率比含水30%及70%时高出15倍及5倍以上·P105和SM110钢也如此,P105钢变化最大,含水100%时腐蚀速率比含水30%时高出50倍·CO2分压和氯离子浓度也会在一定程度上影响油管钢的局部腐蚀的趋势·

关键词: 油管, CO2腐蚀, 局部腐蚀, 原油, 流速

Abstract: The local corrosion rate of tubing steels N80, P105 and SM110, which were usually used in a domestic oil were studied via simulation. The results show that all of the tubing steels exhibit high corrosion rate and that the flow-rate and ratio of crude to water affect most evidently the local corrosion rate. When the water content is up to 100%, the corrosion rates of steel N80 are 15 times and 5 times larger than those when the water content is 30% and 70%, respectively in this respect the steels P105 and SM110 are similar to N80, especially the corrosion rate of PI 05 when water content is 100% is 50 times larger that when water content is 30%. Moreover, it is found that the CO2 partial pressure and Cl- concentration also affect the corrosion rate to a certain extent.

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