SYNTHESIS AND TESTING OF ACTIVE BASES FOR CORROSION INHIBITORS

Abstract

The results of electrochemical testing of new active bases for the creation of commercial corrosion inhibitors under conditions simulating general and local corrosion are described. General corrosion using corrosion current, working electrode geometry, State Standard 9.506-87 methodology was calculated. The anodic polarization of the working steel electrode was a physical model and the basis for calculating local corrosion. The protective effect of reagents for the model environments of the Ural-Volga region and Western Siberia oilfields (Samotlor oilfield) were determined. Comparative measurements of the corrosion rate of substituted 1,3-dioxanes, ethanolamine benzoate with a commercial corrosion inhibitor were carried out. It was found that the best protective effect against general corrosion at the level of a commercial imidazoline-type corrosion inhibitor in the model environment of the Ural-Volga region (according to State Standard 9.506-87) and Western Siberia oilfields (Samotlor oilfield) has ethanolamine benzoate. Electrochemical modeling of local corrosion and measurement of the protective effect showed that ethanolamine benzoate has an inhibitory effect on the rate of local corrosion in the model environment of Ural-Volga oilfields and is promising for modifying commercial inhibitors and expanding the efficiency of these reagents.Reducing the risk of local corrosion requires special testing under conditions of simulation of this type of corrosion for commercial reagents.