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油田采出水中主要腐蚀离子对渗锌碳钢的腐蚀 被引量:6

The Influence of Major Ions on the Corrosion of Penetrating Zinc Steel in Oil Field Water
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摘要 采用静态腐蚀挂片失重方法,研究了胜利油田采出水中主要腐蚀离子成份(Cl-,Ca2+,HCO-3)对20#碳钢和渗锌碳钢的腐蚀行为,并对腐蚀原因做出了分析。研究表明,20#碳钢及渗锌碳钢的腐蚀速率随腐蚀介质中Cl-质量浓度的增加而呈现上升趋势;Ca2+离子的加入在一定程度促进了20#碳钢和渗锌钢的腐蚀;HCO-3对20#碳钢腐蚀具有先抑制后促进作用。在模拟的采出水腐蚀介质中,渗锌碳钢的耐蚀性能要明显好于20#碳钢,平均腐蚀速率小于石油行业腐蚀速率(0.076 mm/a)控制标准规定。 Adopting static corrosion weight-loss method, the corrosible effect Shengli oilfield produced water containing main ion ingredients (Cl^- , Ca^2+ , HCO3^- ) on the carbon steel and penetrating zinc steel metal materials was studied, and causes of corrosion were also made analysis. The results show that with the concentration of Cl^- increasing, the corrosion rate of 20^# carbon steel and the penetrating zinc carbon steel is increased. When the content of Ca^2+ ions was added, the corrosion rate of 20^# carbon steel and the permeability zinc carbon steel also has a increasing trend. HCO3^- inhibited corrosion rate of 20^# carbon steel and then increased; the corrosion resistance of penetrating zinc steel is superior to 20^# carbon steel in the simulative oilfield water, the corrosion rate is less than the petroleum industry standard 0. 076 mm/a, so penetrating zinc steel metal materials can be used in pipeline of the oilfield.
出处 《石油化工高等学校学报》 CAS 2011年第3期31-34,共4页 Journal of Petrochemical Universities
基金 辽宁省教育厅高等学校创新团队项目(LT2010059) 中国石油化工集团公司项目(308028)
关键词 油田采出水 渗锌碳钢 离子腐蚀 腐蚀速率 Oilfield water Penetrating zinc steel Ionic Corrosion Corrosion rate
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