ABSTRACT Inhibition effect of oleic acid hydrazide (OAH), a green corrosion inhibitor on API X70 steel in an Indian oilfield produced water was investigated for the first time under flow condition. The test was carried out at a more critical location (90-degree pipe elbow) in a circulating loop system with the fixed flow velocity. This location is deliberately chosen because, at this location, catastrophic failure of a low alloy steel piping system usually takes place under highly corrosive turbulent flow with higher wall shear stress and flow velocity. The corrosion examination was carried out by varying the concentrations (0.05, 0.15, 0.30 g L−1) of the OAH inhibitor under flow condition. The maximum inhibitor efficiency is found 87.7% at 0.30 g L−1 concentration. The formation of protective film was confirmed by SEM, XPS, Raman spectroscopy and FTIR spectra.

中文翻译：

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绿色缓蚀剂对API X70管线钢在合成油田水中流动加速腐蚀的影响

摘要 首次在流动条件下研究了一种绿色缓蚀剂油酸酰肼（OAH）对印度油田采出水中 API X70 钢的缓蚀效果。测试在循环回路系统中更关键的位置（90 度弯管）进行，流速固定。这个位置是故意选择的，因为在这个位置，低合金钢管道系统的灾难性故障通常发生在具有较高壁面剪切应力和流速的高腐蚀性湍流下。通过在流动条件下改变 OAH 抑制剂的浓度（0.05、0.15、0.30 g L-1）来进行腐蚀检查。在 0.30 g L-1 浓度下发现最大抑制剂效率为 87.7%。通过SEM、XPS、