ABSTRACT Corrosion was correlated with fluid-structure based on a comparative investigation of the corroded surface morphology of mild steel and the microscopic feature of oil–water mixture. It was found that the corrosion rate increased with increasing water cut and flow rate, while the corrosion morphology closely relied on the mixing state of oil and water. In high-pressure CO2 saturated water-in-oil emulsions, the corrosion product particles grew gradually with enlarging water droplets at a low flow rate, but at a high flow rate an abrupt propagation of corrosion damage occurred when the water droplets were larger than a critical size, which could be attributed to the changed fluid behavior of water droplets near the steel surface. It provides a deep insight into the corrosion phenomena at the steel/fluid interface, which is helpful for the risk evaluation of aggressive multiphase fluids.

中文翻译：

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控制低碳钢在油水混合物中腐蚀行为的流体结构

摘要 基于对低碳钢腐蚀表面形态和油水混合物微观特征的比较研究，腐蚀与流体结构相关。发现腐蚀速率随着含水率和流量的增加而增加，而腐蚀形貌与油水混合状态密切相关。在高压 CO2 饱和油包水乳液中，腐蚀产物颗粒在低流速下随着水滴的增大逐渐增大，但在高流速下，当水滴大于临界尺寸，这可归因于钢表面附近水滴的流体行为改变。它提供了对钢/流体界面腐蚀现象的深入了解，