Published March 2026, Pg. 51-58
Section: Сorrosion protection
UOT: 622.197
DOI: 10.37474/0365-8554/2026-03-51-58
Study of external factors influencing the corrosion process of hydraulic structures operated in marine conditions
K.A. Mammadov PhD in Tech. Sc. - Azerbaijan State Oil and Industry UniversityThe article is dedicated to the study of external factors affecting the corrosion processes of hydraulic structures operating in marine conditions.
Hydraulic structures operating in marine environments are exposed to highly aggressive conditions, requiring special scientific approaches in their design features and protective measures. Such structures must ensure both technological reliability and resistance to corrosion and mechanical wear. To guarantee long-term and safe operation, it is essential to regularly study the external factors affecting corrosion aggressiveness, including the chemical composition of seawater, temperature fluctuations, wind speed and direction, wave dynamics, and humidity indicators.
Research conducted at the “Neft Daşları” Oil and Gas Production Department the corrosion rates of steel samples in atmospheric and intermittent immersion zones. Considering the impact of global climate change, the intensity of the corrosion process on metal samples was evaluated over a year with respect to temperature, humidity, and wind variations. The results indicate that samples in the intermittent immersion zone corrode 1.5–2 times faster compared to those in the atmospheric zone. This difference is primarily due to the periodic effect of seawater, climate variability, and seasonal changes in environmental parameters.
Based on the research findings, it is concluded that reliable corrosion protection of equipment operating in marine conditions requires considering the impact of external factors, reinforcing or replacing structural metal elements according to monitoring results, applying electrochemical protection systems in submerged parts, and implementing insulation measures in the splash zone. These measures contribute to extending the service life of structures, minimizing accident risks, and optimizing eco-operational performance.
References:
1. Ahmadov Y.E., Asadov S.B. Xezer denizinde hidrometeoroloji parametlerin gostericilerine iqlim deyiskenliyi tesirinin qiymetlendirilmesi // Azerbaycan neft teserrufati, 2012, № 6, s. 36-39.
2. Hesenov F.Q., Asadov S.B. Xezer denizinin neft-qaz cixarilan akvatoriyalarinda hidrometeoroloji parametlerin tedqiqi // Azerbaycan neft teserrufati, 2015, № 2, s. 39-43.
3. Melchers R., Jeffrey R. Early corrosion of mild steel in seawater. Corros. Sci., 2005, № 47, pp. 1678-1693.
4. Mammadov K.A., Aliyev S., Nurullayev V. Application of new corrosion inhibitor for gathering pipelines for improving the ecological. News of The National Academy of Sciences of The Republic of Kazakhstan, series Chemistry and Technology, 2021, vol. 4, № 448, pp. 32-39.
5. Mammadov K.A., Hamidova N.S., Huseynova U.K. Diagnosis of the corrosion state of hydraulic structures in the Caspian Sea to prevent environmental damage. Bulletin of the National Academy of Sciences of the Republic of Kazakhstan, 2020, vol. 3, № 385, pp. 111-118.
6. Aliyev S.T., Mammadov K.A. Maden daxili boru kemerlerinde korroziya-erroziya ve mexaniki yeyilmenin qarshisini almaqla ekoloji veziyyetin yaxshilashdirilmasi // Azerbaycan neft teserrufati, 2019, № 8, s. 37-41.
7. Mamedov K.A., Hamidova N.S., Aliyev T.S. Development of new resource-saving technologies to improve the efficiency of the oil product transportation system. Problems of Collecting, Preparing and Transporting Oil and Oil Products, 2019, No.1 (117), pp. 82-88.
8. Mamedov K.A., Hamidova N.S. Prevention of corrosion damage to oil field equipment with a composition based on technical phosphatides // SOCAR Proceedings, 2021, No. 4, pp. 96-101.
9. Mammedov K.A., Hamidova N.S., Aliyev T.S. Development of a new multifunctional inhibitor for the protection of oilfield equipment // Chemical and Petroleum Engineering, 2019, 55(3), pp. 340-346.
10. Mammadov K.A., Hamidova N.S. Development of a multifunctional corrosion inhibitor, possessing the properties of a microemulsion. News of the National Academy of Sciences of the Republic of Kazakhstan, series of Geology and Technical Sciences, 2020, vol. 1, № 439, pp. 64-72.
11. Mammadov K.A. Study of the effect of a new combined inhibitor and a permanent magnetic field on corrosion and salt deposition. News of The National Academy of Sciences of The Republic of Kazakhstan, series Chemistry and Technology, 2020, vol. 2, № 440, pp.145-152.
12. Mamedov K.A., Kyazimov F.K., Seyfiyev F.G. Corrosion inhibitor for the protection of oilfield equipment operated in various aggressive environments. Steel in Translation, 2024, vol. 54, No.11, pp. 1130-1133.
13. Mamedov K.A., Safarov N.M., Aliyev S.T. Ob izuchenii osnovnykh faktorov, vyzyvayushchie korrozionno-errozionnye iznosy v truboprovodakh. Mezhdunarodnoy nauchno-prakticheskoy konferentsii “Kazakhstanskaya neft: proshloe, nastoyashchee i budushchee”, Almaty, 2019, s. 276-280.
14. Ismaylov F.S., Kurbanov M.M. Problemy korrozii gidrotekhnicheskikh sooruzheniy, neftepromyslovogo oborudovaniya i truboprovodov na sushche i na more // Korroziya territorii neftgaz, 2011, № 5, s. 14-21.
15. Vyakhirev R.I., Nikitin B.A., Mirzoev D.A. Obustroystvo i osvoenie morskikh neftegazovykh mestorozhdeniy. – Moskva: Izdatelstvo Akademii gornykh nauk, 1999, 374 s.