关键词: 缓蚀剂, 复杂腐蚀, 缓蚀, 协同效应, 膜补强

Abstract: In view of the complexity of the transportation and treatment media of oil/ gas field production system, DCI serial oilfield corrosion inhibitors are researched and developed by utilizing the intramolecular synergistic effect, intermolecular mutual-inlaying reinforcement and appropriate HLB value. They have features of fast forming of a protective film, strong adhesion, and the compact/ tight structure. The DCI series of oilfield corrosion inhibitors can cause the strong inhibition of the corrosion of corrosive media such as CO2, H2S, dissolved oxygen, microbes or micro-organisms under the high contents of salinity and chloride. We should determine the appropriate blending process of corrosion inhibitor according to the oil production process and corrosion conditions so as to ensure that the effectiveness of the corrosion inhibitors into full play. The total amount of the blended corrosion inhibitors should be based on corrosive environment, and be optimized and determined through indoor experiments and field tests.