corrosionprotectionПрактика противокоррозионной защитыTheory and Practice of Corrosion Protection1998-57382658-6797Association "CARTEC"10.31615/j.corros.prot.2025.117.3-1corrosionprotection-178Research ArticleМАТЕРИАЛЫ И ОБОРУДОВАНИЕ ДЛЯ ПРОТИВОКОРРОЗИОННОЙ ЗАЩИТЫMATERIALS AND EQUIPMENT FOR CORROSION PROTECTIONИнгибирование углекислотной коррозии стали в имитатах пластовых вод газовых месторожденийInhibition of Carbon Dioxide Corrosion of Steel in Model Stratum Waters of Gas FieldsЦыганковаЛ. Е.TsygankovaL. E.

Цыганкова Людмила Евгеньевна, д.х.н., профессор, зав. кафедрой химии

392000, г. Тамбов, ул. Интернациональная, д. 33

Liudmila E. Tsygankova, Doctor of Chemistry, Professor, Head of Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

vits21@mail.ruВагаповР. К.VagapovR. K.

Вагапов Руслан Кизитович, д.т.н., начальник лаборатории защиты от атмосферной и внутренней коррозии

142717, Московская обл, г.о. Ленинский, пос. Развилка, ул. Газовиков, зд. 15, стр. 1

Ruslan K. Vagapov, Doctor of Technical Sciences, Cand. Sci. in Chemistry, Head of Laboratory

15, bld. 1, Gazovikov St., Razvilka, Leninsky municip., Moscow region, 142717

АбрамовА. Е.AbramovA. E.

Абрамов Алексей Евгеньевич, старший преподаватель кафедры химии

392000, г. Тамбов, ул. Интернациональная, д. 33

Alexey E. Abramov, Senior Lecturer of the Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

РодионоваЛ. Д.RodionovaL. D.

Родионова Людмила Дмитриевна, аспирант кафедры химии

392000, г. Тамбов, ул. Интернациональная, д. 33

Lyudmila D. Rodionova, postgraduate student of the Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

СеменюкТ. В.SemenyukT. V.

Семенюк Татьяна Витальевна, аспирант кафедры химии

392000, г. Тамбов, ул. Интернациональная, д. 33

Tatyana V. Semenyuk, postgraduate student of the Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

ГорловД. А.GorlovDenis A.

Горлов Денис Анатольевич, студент химического отделения

392000, г. Тамбов, ул. Интернациональная, д. 33

Denis A. Gorlov, student of Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

ЛомакинаИ. А.LomakinaI. A.

Ломакина Ирина Андреевна, студент химического отделения

392000, г. Тамбов, ул. Интернациональная, д. 33

Irina A. Lomakina, student of Department of Chemistry

33, Internatsyonalnaya st., Tambov, 392000

Тамбовский государственный университет имени Г.Р. ДержавинаРоссияDerzhavin State UniversityRussian FederationООО «Газпром ВНИИГАЗ»РоссияLLC Gazprom VNIIGAZRussian Federation202520012026303621Copyright © Цыганкова Л.Е., Вагапов Р.К., Абрамов А.Е., Родионова Л.Д., Семенюк Т.В., Горлов Д.А., Ломакина И.А., 20262026Цыганкова Л.Е., Вагапов Р.К., Абрамов А.Е., Родионова Л.Д., Семенюк Т.В., Горлов Д.А., Ломакина И.А.Tsygankova L.E., Vagapov R.K., Abramov A.E., Rodionova L.D., Semenyuk T.V., Gorlov D.A., Lomakina I.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.corrosion-protection.ru/jour/article/view/178

Исследована защита углеродистой стали от углекислотной коррозии ингибитором, представляющим собой алкиламины в органическом растворителе, в имитатах пластовых вод МВ3 и МВ4 методами гравиметрии, потенциодинамической поляризации и импедансной спектроскопии. Более насыщенная солями среда МВ4+СО2 характеризуется более низкими скоростями коррозии, чем среда МВ3 +СО2. При скорости коррозии в отсутствие ингибитора 0,1688 г/(м2∙ч) в среде МВ4, наличие 300 мг/л ингибитора приводит к ее снижению до 0,0485 г/(м2∙ч) (Z=71%), по данным гравиметрических суточных испытаний при комнатной температуре. В среде МВ3 в аналогичных условиях снижение скорости коррозии меньше (0,0723 г/(м2∙ч)) (Z=62%) против 0,1894 г/(м2∙ч) в отсутствие ингибитора). При 80 ºС и в динамических условиях в присутствии 10% углеводородной фазы скорости коррозии выше и величины защитного эффекта (Z, %) ингибитора выше.Методами потенциодинамической поляризации и импедансной спектроскопии показано, что ингибитор замедляет анодный процесс коррозии стали, адсорбируясь на поверхности. Параллельно ингибитор затормаживает диффузию водорода, образующегося при коррозии, вглубь металла.

The protection of carbon steel against carbon dioxide corrosion by an inhibitor, which is alkylamines in an organic solvent, in model stratum waters MW3 and MW4 was studied using gravimetry, potentiodynamic polarization and impedance spectroscopy methods. The more salt-saturated environment MW4+CO2 is characterized by lower corrosion rates than the environment MW3+CO2. With the corrosion rate in the absence of inhibitor of 0.1688 g/(m2∙h) in the MW4 environment, the presence of 300 mg/L of inhibitor leads to its decrease to 0.0485 g/(m2·h) (Z =71%), according to gravimetric daily tests at room temperature. In the MW3 environment under similar conditions, the decrease in the corrosion rate is less (0.0723 g/(m2·h) (Z = 62%) against 0.1894 g/(m2·h) in the absence of inhibitor). At 80 °C and under dynamic conditions in the presence of 10% hydrocarbon phase, the corrosion rates are higher and the protective effect values (Z,%) of the inhibitor are higher. Using potentiodynamic polarization and impedance spectroscopy methods, it was shown that the inhibitor slows down the anodic process of steel corrosion by adsorbing on the surface. At the same time, the inhibitor slows down the diffusion of hydrogen formed during corrosion into the metal.

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The authors declare that there are no conflicts of interest present.