Physical chemistry and interfacial properties of corrosion inhibitors: Understanding fundamental processes to support inhibitor selection and successful field deployment

This research program proposal focuses on improving the understanding of the physical and interfacial properties of corrosion inhibitors in oilfield environments relevant to improving the State of Qatar operations. This proposal outlines a systematic series of laboratory studies using ‘model’ field inhibitor/water chemistries and test conditions with a view to bridging the gap between fundamental processes and field application. The program of research is divided into three Scientific Phases (Phases 2-4), which run sequentially in increasing complexity, with progression only being endorsed once a particular phase is fully comprehended. This positive approach ensures both a fundamental understanding and explanation of the physical processes every step of the way, with the ultimate goal of improving operational integrity. There is a clear rationale for the research program; improving the understanding of the underlying physical and interfacial properties of corrosion inhibitors provides the basis for their successful qualification, selection, and deployment in the field. In summary, this proposal outlines two complementary pieces of research: i. Understanding and quantifying the physical properties and behavior of inhibitors in process fluids (specifically, critical micelle concentration (CMC) and partitioning); examining their inter-relation and the influence this has on corrosion inhibition performance. ii. Understanding the fundamental interfacial properties of corrosion inhibitors and how the presence of corrosion products interferes with chemical performance, particularly in the context of localized corrosion/pitting.

Hamad Bin Khalifa University (HBKU)