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Effect Of Inhibitor Component On Inhibitor Efficiency - Inhibitor Types And Intensifier-

A lot of oil and gas facilities face corrosion problems because the production fluid contains some corrosive components represented by CO2. Generally, corrosion inhibitors are used in order to mitigate corrosion problems of tubing and pipeline. Imidazoline is known as one of the active ingredients of corrosion inhibitors and widely used in the oil and gas industries. However, imidazoline-type inhibitor is easily hydrolyzed to amide if water mixes into it.

Product Number: 51322-17791-SG
Author: Hirotaka Mizukami, Ayano Yasui, Tatsuya Sei, Takashi Ito, Susumu Hirano, Toshiyuki Sunaba, Akiyoshi Kimura, Reiko Ikeda, Mitsuru Uno
Publication Date: 2022
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Imidazoline, which is known as one of the active ingredients of corrosion inhibitors, is used in a lot of oil and gas facilities in order to mitigate corrosion problems. However, it is easily hydrolyzed to amide, which leads to the change of inhibitor efficiency. Therefore, the inhibitor efficiency of imidazoline-type and amide-type inhibitors was evaluated by several tests such as electrochemical measurements, weight loss test and quartz crystal microbalance measurement. Furthermore, the effect of one intensifier for corrosion inhibitor was also evaluated by the same tests.
As a result, the large difference of inhibitor efficiency between the imidazoline-type and amide-type inhibitor was not observed by the electrochemical measurements. On the other hand, the weight loss test under turbulent flow indicated that imidazoline-type inhibitor performed higher inhibitor efficiency than that of the amide-type. This intensifier improved the inhibitor efficiency of both types.

Imidazoline, which is known as one of the active ingredients of corrosion inhibitors, is used in a lot of oil and gas facilities in order to mitigate corrosion problems. However, it is easily hydrolyzed to amide, which leads to the change of inhibitor efficiency. Therefore, the inhibitor efficiency of imidazoline-type and amide-type inhibitors was evaluated by several tests such as electrochemical measurements, weight loss test and quartz crystal microbalance measurement. Furthermore, the effect of one intensifier for corrosion inhibitor was also evaluated by the same tests.
As a result, the large difference of inhibitor efficiency between the imidazoline-type and amide-type inhibitor was not observed by the electrochemical measurements. On the other hand, the weight loss test under turbulent flow indicated that imidazoline-type inhibitor performed higher inhibitor efficiency than that of the amide-type. This intensifier improved the inhibitor efficiency of both types.

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