Key Applications of MEG in Oil & Gas:

• Hydrate Inhibition: MEG is used in subsea pipelines to prevent the formation of methane hydrates—solid ice-like structures that can plug pipelines due to high pressure and low temperatures.
• Natural Gas Dehydration: MEG acts as a desiccant, removing water from natural gas to prevent corrosion and hydrate formation during transportation.
• Flow Assurance & Pipeline Safety: By reducing the freezing point of water, MEG prevents blockage in pipes, ensuring uninterrupted production, lowering maintenance costs, and extending equipment lifespan.
• Wax Management: MEG can help in managing wax deposition in pipelines, assisting in flow assurance. 

Process and Efficiency:

• Injection & Recovery: MEG is injected at the wellhead (“rich” MEG), and after separating from the hydrocarbons, it is collected and processed through a reclamation unit to remove water, salt, and contaminants.
• Regeneration: The wet, rich MEG is regenerated (distilled) to produce lean MEG, usually at over 99% purity, allowing it to be reused for up to 18–24 months.