November 25, 2010
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№ 9 (September 2010)

EUROCORR 2010: Choosing The Right Corrosion Inhibitor

The use of corrosion inhibitors is one of the main areas of corrosion protection science all over the world. The importance of this topic for the oil&gas industry was evident during the EUROCORR 2010 conference, when the Joint EFC WP13/NACE Session on Corrosion Mechanisms and Corrosion Inhibition: Corrosion in oil&gas production took place on Thursday, September 16.

By Elena Zhuk

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Though most of the reports has the strongly academic bend that is typical for EUROCORR conferences all over the world, some of the reporters tried to focus on applied science.
Notable today was a presentation by Tong Eak Pou, ARKEMA/CECA, France. Pou said one problem encountered when making corrosion inhibitors was to ensure they were in compliance with other additives used in oilfield conditions. This, he said, could be achieved based on company R&D activities and products use.
“Scale inhibitors are anionics and corrosion inhibitors – cationics, and that causes a problem," Pou expalined, "Generally, the antiscale destroys the performance of corrosion inhibitors”. Another issue is hydrate inhibitors, the most wide spread group of which is KHI. Here, corrosion inhibitors can destroy KHI. According to Pou, this problem is important in Russia, since gas hydrates are widespread in the country. One more group causing physical compliance problems is demulsifiers.
“The choice of an inhibitor is always complicated, because depending where you are in the world, you don’t necessarily use products of the same companies at the same time. There are still many things that can be learned,” the chairman of the section Thierry Chevrot, Total S.A., told OGE.
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