Study of the selection of effective corrosion inhibitors for various acids
https://doi.org/10.31615/j.corros.prot.2021.102.4-3
Abstract
Corrosion is one of the complications in the acidizing of the bottomhole zone of the well. Corrosion damage can lead to accidents and product loss. One of the most effective ways to protect metal equipment from corrosion is the use of corrosion inhibitors. Cationic surfactants are mainly used because they are capable of forming protective films on the surface of metals. In this work, studies were carried out to determine the effectiveness of industrial corrosion inhibitors in hydrochloric and sulfamic acids in concentrations of 5, 10, 15 (% wt.). As a result, it was found that in hydrochloric acid, corrosion damage is suppressed due to the adsorption of the inhibitor on the metal surface, while in sulfamic acid there are competing processes of adsorption of sulfamate ions and surfactants.
About the Authors
L. F. DavletshinaRussian Federation
Luciya F. Davletshina, Ph.D. in Technical Sciences, Associate Professor of the Department of Technology of Chemical Substances for the Oil and Gas Industry
65, Leninsky av., Moscow, 119991
L. I. Tolstyh
Russian Federation
Larisa I. Tolstykh, Ph.D. in Chemical Sciences, Associate Professor of the Department of Technology of Chemical Substances for the Oil and Gas Industry
65, Leninsky av., Moscow, 119991
K. A. Poteshkina
Russian Federation
Kira A. Poteshkina, Ph.D. in Technical Sciences, Associate Professor of the Department of Technology of Chemical Substances for the Oil and Gas Industry
65, Leninsky av., Moscow, 119991
V. D. Kotekhova
Russian Federation
Viktoriia D. Kotekhova, junior scientist branch of the worldclass scientific center «Rational development of the planet’s liquid hydrocarbon reserves»
65, Leninsky av., Moscow, 119991
A. N. Galkina
Russian Federation
Alexandra N. Galkina, graduate student of the Department of Technology of Chemical Substances for the Oil and Gas Industry
65, Leninsky av., Moscow, 119991
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Review
For citations:
Davletshina L.F., Tolstyh L.I., Poteshkina K.A., Kotekhova V.D., Galkina A.N. Study of the selection of effective corrosion inhibitors for various acids. Theory and Practice of Corrosion Protection. 2021;26(4):32-41. (In Russ.) https://doi.org/10.31615/j.corros.prot.2021.102.4-3