Effect of inhibitor mixture composition on the protective properties in carbon-dioxide corrosion of steel

• A. A. Markosyan¹, E. A. Kiyanitsa¹, V. V. Chernyavina¹, A. G. Berezhnaya¹ and V. I. Mishurov²

¹ Southern Federal University, Zorge st., 7, Rostov-on-Don, 344090 Russian Federation
² Don State Technical University, Gagarin sq., 1, Rostov-on-Don, 344010, Russian Federation

Abstract: The problem of corrosion control is one of the cardinal problems in the gas-and-oil producing industry. Because of it, defects occur during operation of oil-field equipment that lead to financial expenses and environmental pollution. The use of inhibitors is the simplest and cheapest method of corrosion protection [1, 2]. The presence of carbon dioxide in stratal water contributes to carbon dioxide corrosion of equipment. The specific features of this kind of corrosion require the selection of specific inhibitors in development and operation of wells. They must have high protective properties at minimal concentrations, have a positive impact on the processes of extraction, preparation, transportation and processing of oil and gas [3–8]. This paper presents the results on the effect of the composition and concentration of inhibitor mixtures on their protective properties in the corrosion of St3 steel in CO2 saturated solution of sodium chloride.

Keywords: carbon dioxide corrosion, phosphorus surface active substances, chloride solutions saturated with CO2

Int. J. Corros. Scale Inhib., 2015, 4, no. 2, 110-115 PDF (600 K)
doi: 10.17675/2305-6894-2015-4-2-110-115

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