Oil well acidizing is a common practice used to boost oil well productivity in the industry. This practice, however, exposes the mild steel components of the wells to extremely harsh corrosive environments. Under such conditions, highly efficient inhibitors are used to minimize corrosion attack. In the present study, corrosion inhibition of mild steel in simulated acidic medium saturated with CO₂ and H₂S gases by a newly synthesized polyurea‐based material (PUCorr‐1) was investigated. Electrochemical studies supported with quantum chemical density‐functional theory calculations and surface characterization revealed that PUCorr‐1 adsorbs onto mild steel through a chemisorption mechanism yielding a stable protective film. The polyurea exhibited an excellent efficiency of 99.9% at a temperature of 50°C and a low concentration of 100 ppm, yielding a corrosion current density of 0.3 µA/cm². In the presence of CO₂ and H₂S gases, PuCorr‐1 exhibited a remarkable performance (>93% efficiency) making it a potential corrosion inhibitor in industrial processes that involve the use of acid solutions in the presence of CO₂ and H₂S gases.

中文翻译：

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一种新型的基于聚脲的材料在CO2和H2S饱和酸性介质中抑制轻度钢腐蚀

油井酸化是提高行业油井生产率的常用方法。但是，这种做法会使孔的低碳钢部件暴露在极其恶劣的腐蚀环境中。在这种情况下，使用高效的缓蚀剂可最大程度地减少腐蚀。在本研究中，低碳钢在模拟酸性介质中的CO ₂和H ₂饱和腐蚀抑制对新合成的聚脲基材料（PUCorr-1）中的S气体进行了研究。电化学研究得到了量子化学密度泛函理论计算和表面表征的支持，表明PUCorr-1通过化学吸附机理吸附在低碳钢上，从而产生稳定的保护膜。聚脲在50℃的温度下表现出99.9％的优异效率，并且在100ppm的低浓度下表现出0.3μA/ cm ²的腐蚀电流密度。在存在CO ₂和H ₂ S气体的情况下，PuCorr-1表现出卓越的性能（效率> 93％），使其成为工业过程中潜在的腐蚀抑制剂，该过程涉及在存在CO ₂和H ₂的情况下使用酸溶液。S气体。