NaCl三元复合驱采出水中碳酸钙沉积层对金属腐蚀的影响  

Effect of calcium carbonate deposition layer on metal corrosion in NaCl-ASP produced water

作　　者：唐玉姬 魏立新[1] 于鑫 张丽[2] 姜怀 张书新 高清河[2] 王超[1,2] TANG Yuji;WEI Lixin;YU Xin;ZHANG Li;JIANG Huai;ZHANG Shuxin;GAO Qinghe;WANG Chao(Northeast Petroleum University,Daqing 163318,China;Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology,Daqing Normal University,Daqing 163712,China;Daqing Oilfield Co.,Ltd.Fourth Oil Production Plant,Daqing 163000,China)

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]黑龙江省油田应用化学与技术重点实验室(大庆师范学院),黑龙江大庆163712 [3]大庆油田有限责任公司第四采油厂,黑龙江大庆163000

出　　处：《电镀与涂饰》2025年第2期93-102,共10页Electroplating & Finishing

基　　金：大庆市指导性科技计划项目(zd-2023-25)。

摘　　要：[目的]在NaCl部分取代碱/表面活性剂/聚合物(ASP)三元复合驱体系中研究不同电沉积时间所得CaCO_(3)层下20钢的腐蚀规律。[方法]采用含NaCl、CaCl_(2)和NaHCO_(3)的混合盐溶液,通过电沉积法在碳钢表面制备CaCO_(3)沉积层。通过电化学测量和失重试验,结合表面分析技术观察浸泡后碳钢的腐蚀形貌和表征腐蚀产物,考察了CaCO_(3)层对碳钢在NaCl-ASP采出水中腐蚀的影响。[结果]电沉积3 h的样品腐蚀速率最低,电沉积1 h的样品腐蚀速率最高。CaCO_(3)沉积层致密性较高的样品有较强的防腐作用。不同CaCO_(3)沉积时间的样品的腐蚀速率从小到大的排序为:电沉积3 h<电沉积30 min<裸电极<电沉积1h。NaCl-ASP体系下生成的腐蚀产物为FeOOH、Fe_(2)O_(3)等。[结论]不同电沉积时间形成的CaCO_(3)的致密性会影响碳钢的垢下腐蚀速率。[Objective]The corrosion behavior of 20 carbon steel beneath CaCO_(3)layers formed by electrodeposition for different time in NaCl-partially substituted alkali/surfactant/polymer(ASP)composite flooding system was studied.[Method]CaCO_(3)deposits were prepared on the surface of carbon steel via electrodeposition in a solution containing NaCl,CaCl_(2),and NaHCO_(3).The effect of CaCO_(3)layer on the corrosion of carbon steel in NaCl-ASP produced water was evaluated based on the observation of corrosion morphology and characterization of corrosion products of carbon steel after immersion by electrochemical measurement,weight loss test,and surface analysis techniques.[Result]The specimen with a CaCO_(3)layer electrodeposited for 3 hour exhibited the lowest corrosion rate,while that with a CaCO_(3)electrodeposition time of 1 h showed the highest.The specimens with compact CaCO_(3)deposition layers had strong anticorrosion effect.The ascending order of corrosion rates for different CaCO_(3)electrodeposition time was determined as:3 h<30 min<bare electrode<1 h.The corrosion products formed in the NaCl-ASP system were identified as FeOOH and Fe_(2)O_(3).[Conclusion]The compactness of CaCO_(3)layers electrodeposited for different time affects the under-deposit corrosion rate of carbon steel.

关 键 词：氯化钠三元复合驱采出水 碳酸钙 碳钢 垢下腐蚀 电化学 

分 类 号：TG172.5[金属学及工艺—金属表面处理]