[1]周 昊,陈 虎,刘 雯,等.油套管钢两相流冲刷腐蚀行为及协同效应研究[J].常州大学学报(自然科学版),2020,32(06):60-68.[doi:10.3969/j.issn.2095-0411.2020.06.010]
 ZHOU Hao,CHEN Hu,LIU Wen,et al.Research on Erosion-Corrosion Behavior and Synergistic Effect of Oil Casing Steel in Two-Phase Flow[J].Journal of Changzhou University(Natural Science Edition),2020,32(06):60-68.[doi:10.3969/j.issn.2095-0411.2020.06.010]
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油套管钢两相流冲刷腐蚀行为及协同效应研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第32卷
期数:
2020年06期
页码:
60-68
栏目:
计算机与信息工程
出版日期:
2020-11-28

文章信息/Info

Title:
Research on Erosion-Corrosion Behavior and Synergistic Effect of Oil Casing Steel in Two-Phase Flow
文章编号:
2095-0411(2020)06-0060-09
作者:
周 昊1陈 虎1刘 雯1马鸿雁2王树立1杨足膺3王 磊4
1.常州大学 石油工程学院,江苏 常州 213164; 2.建东职业技术学院,江苏 常州 213032; 3.常州大学 商学院,江苏 常州 213164; 4.中国石油西南油气田公司 输气管理处,四川 成都 610000
Author(s):
ZHOU Hao1 CHEN Hu1 LIU Wen1 MA Hongyan2 WANG Shuli1 YANG Zuying3 WANG Lei4
1. School of Petroleum Engineering, Changzhou University, Changzhou 213164, China; 2. Jiandong College of Vocation &Technology, Changzhou 213032, China; 3. School of Business, Changzhou University, Changzhou 213164, China; 4. Department of Gas Transportation Management,PetroChina Southwest Oil and Gas Field Company,Chengdu 610000, China
关键词:
N80钢 冲刷腐蚀 失重法 电化学法 协同效应
Keywords:
N80 steel erosion-corrosion weight loss method electrochemical tests synergism
分类号:
TG 172.8
DOI:
10.3969/j.issn.2095-0411.2020.06.010
文献标志码:
A
摘要:
针对油套管材料存在的多相流冲刷腐蚀问题,采用旋转圆柱电极冲刷腐蚀实验装置并结合电化学工作站,通过电化学测试方法和失重法,研究了N80钢在不同pH条件下的含砂、含NaCl液固两相流流体中的冲刷腐蚀行为及流速、Cl-质量浓度对协同效应的影响规律。结果表明:随着pH的增大,N80钢的极化电阻变大,容抗弧半径增大,腐蚀电流密度呈下降趋势,腐蚀速率变小; N80钢在不同pH的液固两相流流体中均呈活化溶解特性,整个腐蚀过程受阴极氧的去极化反应控制; 流速、Cl-质量浓度分别变化时,协同效应为材料损失的主要原因,协同效应随各个影响因素的变化趋势和总冲刷腐蚀速率变化趋势一致。
Abstract:
Aiming at erosion-corrosion of oil casing material in multi-phase flow, the erosion-corrosion behavior of N80 steel in liquid-solid two phase flow fluid which containing silica sand and sodium chloride at different pH values and the influence of flow velocity and concentration of chloride ion on the synergistic effect were investigated by using a rotating cylindrical electrode device and an electrochemical workstation combined with electrochemical testing method and weight loss method. The results show that with the increase of pH value, the polarization resistance of N80 steel increases, and the radius of capacitive reactance arc on EIS increases, the corrosion current density and the corrosion rate decreases simultaneously. N80 steel exhibits activation dissolution characteristics in liquid-solid two-phase flow fluids with different pH values. The whole corrosion process is controlled by cathodic reduction reaction. Synergism is the main cause of material mass loss when the flow rate and concentration of chloride ion change respectively. The variation trend of synergism with each influencing factor is consistent with that of total erosion-corrosion rate.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:2020-08-04。
基金项目:国家自然科学基金资助项目(41801194,51706024); 江苏省油气储运重点实验室开放课题项目(SCZ1311700006/004)。
作者简介:周昊(1979—),男,四川自贡人,硕士,讲师。E-mail: zhouhao@cczu.edu.cn
更新日期/Last Update: 1900-01-01