强氧化剂添加对油套管在焦磷酸钾溶液中耐蚀性的影响
The Effect of Oxidizing Agent on Corrosion Behaviour of Tubing and Casing Materials in Phosphate Completion Fluid Environment
摘 要
通过高温高压腐蚀模拟浸泡试验和电化学试验，结合扫描电子显微镜（SEM）等分析手段，研究了强氧化剂K2CrO4对超级13Cr马氏体不锈钢及P110碳钢在K4P2O7磷酸盐完井液溶液中耐蚀性的影响。结果表明：K2CrO4的加入可以提升超级13Cr马氏体不锈钢和P110碳钢的耐蚀性。K2CrO4可以抑制P110碳钢表面疏松腐蚀产物的生成，增加13Cr马氏体不锈钢的钝化特性。
碳钢
磷酸盐完井液
强氧化剂
super 13Cr stainless steel
carbon steel
phosphate completion fluid
oxidizing agent
Abstract
The effect of strong oxidant K2CrO4 on the corrosion resistance of super 13Cr stainless steel and P110 carbon steel in K4P2O7 phosphate completion fluid solution was studied by high temperature and high pressure corrosion simulation immersion test and electrochemical test, combined with scanning electron microscopy (SEM) and other analytical methods. The results showed that the addition of K2CrO4 could improve the corrosion resistance of super 13Cr martensitic stainless steel and P110 carbon steel. K2CrO4 could inhibit the formation of loose corrosion products on the surface of P110 carbon steel and increase the passivation characteristics of 13Cr martensitic stainless steel.
中图分类号 TG174 DOI 10.11973/fsyfh-202107001
所属栏目 试验研究
基金项目 国家重大科技专项（2016ZX05051003）
收稿日期 2019/12/15
修改稿日期
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引用该论文: MA Lei,YUE Xiaoqi,ZHAO Mifeng,ZHANG Huijuan,XING Xing,WANG Hua,ZHANG Lei,LU Minxu. The Effect of Oxidizing Agent on Corrosion Behaviour of Tubing and Casing Materials in Phosphate Completion Fluid Environment[J]. Corrosion & Protection, 2021, 42(7): 1
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参考文献
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【3】YOHAI L,VÁZQUEZ M,VALCARCE M B. Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments[J]. Electrochimica Acta,2013,102:88-96.
【4】BURSTEIN G T,MARSHALL P I. The coupled kinetics of film growth and dissolution of stainless steel repassivating in acid solutions[J]. Corrosion Science,1984,24(5):449-462.
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