Understanding Kinetic Hydrate Inhibitor and Corrosion Inhibitor Interactions

摘要

Kinetic Hydrate Inhibitors (KHI) are increasingly becoming more prevalent in the oil and gas industry, thus the knowledge of how they impact other oilfield chemicals becomes important. This paper will attempt to explain how these products impact both the KHIs and corrosion inhibitors (CI) performance in the presence of each other. Application: This paper will address fundamental properties of both chemistries and how their interaction can be understood at the molecular level. Ultimately, this fundamental understanding allows for a more informed selection of Kill and CI for sub-sea applications. Results, Observations, and Conclusions: A more in-depth understanding of how KHI and CI interact with each other will allow for better selection of these products and will help develop the next generation of these chemistries. By understanding at the molecular level more favorable selection can be made and problems of negative interaction can be avoided. This work will explore the possibility of two separate mechanisms that can cause KHIs and CIs to negatively impact each other. The two mechanisms will be explored by using LC/MS (Liquid Chromatography Mass Spectrum) and SFT (Surface Tension measurement) with the results from these exploratory techniques correlated to performance testing for both KHIs and CIs we hope to gain a better grasp of the underlying issue. Significance of Subject Matter: The compatibility of the KHI with the CI is not a well-understood phenomenon and this paper will address this compatibility from a chemistry point of view. Therefore, this provides a more fundamental insight into the interactions of KHI'S and CIs.