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Prof. Malcolm A Kelland - December 17, 2021


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Prof. Malcolm A Kelland, University of Stavanger - Norway

Polyamine Oxides as Kinetic Hydrate Inhibitors for Gas and Oilfield Flow Assurance

Abstract. Kinetic hydrate inhibitors (KHIs) are a class of low dosage hydrate inhibitors used mainly to prevent gas hydrates from plugging of upstream gas and oil flow lines where the subcooling is not too high. The key ingredient in KHI formulations is one or more water-soluble polymers with multiple amphiphilic groups. Commercial KHI polymers all contain amide groups attached to hydrophobic moieties. The strong hydrogen-bonding afforded by the amide group is assumed to be key to the KHI performance. However, other strong hydrogen-bonding groups are available, such as the amine oxide group. In the last decade we have investigated oligomers and polymers with amine oxide groups as KHIs. Here we summarise our findings, discuss their advantages and disadvantages and how these studies can shed some light on the KHI mechanism.
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