Corrosion Inhibitors of the SNPKh Brand. 2. The P,N-Containing Corrosion Inhibitor for Protection of Oil-Field Equipment

摘要

Series of functionalized pyridinium alkyl[poly(oxyethylene)] phosphites, isoquinolinium alkyl[poly(oxyethylene)] phosphites, pyridinium aryl[poly(oxyethylene)] phosphites, and isoquinolinium aryl[poly(oxyethylene)] phosphites were obtained and their properties were studied systematically. Some of them were found to be effective corrosion inhibitors in aqueous CO_2- and H_2S-containing media. Isoquinolinium dodecyl- and dodecylphenyl[dodeca(oxyethylene)] phosphites proved to be the best inhibitors. The isoquinolinium aryl[poly(oxyethylene)] phosphites obtained were used to create a new corrosion inhibitor. Most of the oil fields in the Russian Federation are currently in their late exploitation and intensive methods are commonly used to increase the oil yield from oil pools. As a result, well products contain more water and are more corrosive. The use of inhibitors is an effective and efficient method of corrosion control [1-3].