Universalism of Hydrogen Sulfide and Carbon Dioxide Corrosion Inhibitors in Conditions of Oil Production and Processing

Resumo

Qualitative criteria for the universalism of hydrogen sulfide and carbon dioxide corrosion inhibitors and their quantitative indices for the corrosion of carbon steel are proposed. They include the maximum value of the total corrosion rate in the presence of H₂S and CO₂ and with simultaneous limitation of the concentration of the inhibitors themselves. The criteria define a minimum reduction in hydrogenation of steel, suppression of hydrogen diffusion into the metal, contain requirements for the bactericidal ability of inhibitors by limiting the number of cells of sulfate-reducing bacteria and producing hydrogen sulfide, and the requirements for their biodegradability. It is shown that a number of domestic inhibitors of hydrogen sulfide and carbon dioxide corrosion of the new generation of the INKORGAZ series fully satisfy the proposed criteria for universalism.