Abstract: The inhibition performance of the eight corrosion inhibitors used in oil and water mixture pipelines was evaluated by means of dynamic simulation method and electrochemistry via the dynamic high-temperature autoclave and electrochemical workstation. Thus, tree well-performed corrosion inhibitors were selected and optimized in terms of their dosages, and the inhibition mechanism was also discussed. The results revealed that the 6#,8# and2# inhibitors showed better inhibition performance which were satisfied the corrosion rate less than 0.076 mm/a. Taking the economic efficiency into account, the preferable dosage of corrosion inhibitor was 40 mg/L.

Key words: dynamic simulation, electrochemistry inhibitor inhibition mechanism

摘要： 针对某油田日益恶劣的腐蚀工况，利用高温高压釜和电化学工作站，通过动态模拟法和电化学测试法对 ８ 种油水混输管道用缓蚀剂进行了筛选和评价，研究了缓蚀剂在加注浓度为 ５０ ｍｇ ／ Ｌ时的缓蚀性能，对筛选出来的缓蚀率较高的 ３ 种缓蚀剂进行浓度优化，并探讨了缓蚀机理。 研究表明：在本实验条件下，６＃、８＃、２＃３ 种缓蚀剂均表现出了较好的缓蚀性能，满足腐蚀速率小于 ０.０７６ ｍｍ／ａ的要求。 从经济方面考虑，加注浓度为 ４０ ｍｇ／Ｌ 能够满足要求。

关键词: 动态模拟, 电化学, 缓蚀剂, 缓蚀机理