English

Vol. 12 3, 2022 p 262 - 267

Pages

Article name, authors, abstract and keyword

262-267

Application of zinc coating to protect the inner surface of main oil pipeline

leg R. Latypov a, Dina R. Latypova a, Khurshetzhon K. Dzhumabaev a, Rezeda R. Tlyasheva a

a Ufa State Petroleum Technological University, 1 Kosmonavtov Str., Ufa, 450062, Russian Federation

DOI: 10.28999/2541-9595-2022-12-3-262-267

Abstract: An analysis of underground pipeline monitoring data shows that aqueous phase accumulation occurs on the inner surface of the pipe on the lower sections of the route profile, caused by emulsion separation and water vapor condensation. The purpose of the study is to develop an effective method for protecting the inner surface of an underground oil pipeline against corrosion under conditions of differential polarization during the separation of an oil-water emulsion. The tasks were set to study the development of the corrosion process on the inner surface of the pipe wall, which is in contact with the produced formation water and to assess the fundamental possibility of using a galvanic coating to protect against electrochemical corrosion. It is shown that occurrence of potential difference on the surface of metal in contact with different phases of water-oil emulsion contributes to the development of galvanic cell, and the anode section is formed on metal surface in formation water. The interaction of steel (20) with zinc in formation water contributes to the displacement of the electrode potential of the metal by 0.3 V to the cathode area and reaches reversible values. Zinc anodic coating is recommended as a method of protecting of oil pipeline against internal corrosion.

Keywords: electrochemical corrosion, differential polarization, electrode potential difference, galvanic protection

For citation:
Latypov . R., Latypova D. R., Dzhumabaev H. K., Tlyasheva R. R. Application of zinc coating to protect the inner surface of main oil pipeline. Science & Technologies: Oil and Oil Products Pipeline Transportation. 2022;12(3):262267. https://doi.org/10.28999/2541-9595-2022-12-3-262-267

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