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International Research Journal of Advanced Engineering and Technology

Open Access Peer Review International
Open Access

Effect of CO₂ Corrosion Inhibitor on Phase Separation Efficiency in Gas Condensate Processing and Justification for Demulsifier Application

DOI https://doi.org/10.55640/irjaet-v03i06-01
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Mikhail Zubkov 1 ,
4 Project consultant, South Stream Transport B.V. Istanbul, Türkiye

Abstract

The article examines the effect of a carbon dioxide corrosion inhibitor on phase-separation efficiency during gas-condensate processing and substantiates the use of a demulsifier within a multifunctional reagent formulation. The study's relevance lies in the contradiction between the need to protect field infrastructure from CO₂ corrosion and the requirement for stable separation of the water-methanol and hydrocarbon phases under the complex thermobaric conditions of gas condensate fields. The aim of the study is to assess the effect of an imidazoline inhibitor on emulsion stability and to develop a solution that preserves anticorrosion protection while restoring phase separation. The scientific novelty lies in identifying a nonlinear relationship between inhibitor concentration and separation quality, as well as in demonstrating the synergy between a polyol demulsifier and hydrodynamic modernization of buffer vessels. It was established that the base inhibitor intensifies emulsion stabilization and carryover of the water-methanol solution, whereas the polyol additive and apparatus modernization restore phase separation even at extreme reagent concentrations. The article may be useful for researchers, process engineers, specialists in gas and condensate treatment, and field corrosion protection services.

Keywords

gas condensate mixture, CO₂ corrosion, corrosion inhibitor, demulsifier, polyols, phase separation

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