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常用油管钢的CO_2局部腐蚀速率
引用本文:李建平,赵国仙,郝士明,路民旭.常用油管钢的CO_2局部腐蚀速率[J].东北大学学报(自然科学版),2004,25(11):1069-1071.
作者姓名:李建平  赵国仙  郝士明  路民旭
作者单位:1. 东北大学,材料与冶金学院,辽宁,沈阳,110004
2. 中国石油管材研究所,陕西,西安,710065
3. 北京科技大学材料科学与工程学院,北京,100083
基金项目:国家自然科学基金资助项目(50231020)
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  
文章编号:1005-3026(2004)11-1069-03
修稿时间:2004年3月18日

Local Corrosion Rate of Conventional Tubing Steels
LI Jian-ping,ZHAO Guo-xian,HAO Shi-ming,LU Ming-xu.Local Corrosion Rate of Conventional Tubing Steels[J].Journal of Northeastern University(Natural Science),2004,25(11):1069-1071.
Authors:LI Jian-ping  ZHAO Guo-xian  HAO Shi-ming  LU Ming-xu
Institution:LI Jian-ping~1,ZHAO Guo-xian~2,HAO Shi-ming~1,LU Ming-xu~3
Abstract:The local corrosion rate of tubing steels N80, P105 and SM110, which are 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 P105 when water content is 100% is 50 times larger that when water content is 30%. Moreover, it is found that the CO_2 partial pressure and Cl~- concentration also affect the corrosion rate to a certain extent.
Keywords:tubing steel  CO_2 corrosion  local corrosion  crude  flow-rate
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