Hydrate inhibitors

Free water in the form of salt brine is sometimes produced along with gas in the well stream. Low temperatures and high pressures are trigging conditions for free water and natural gas to form hydrates, a slushy mass that can plug flow lines. Hydrates control is a principle concern in production of natural gas onshore and especially offshore, where the gas may travel a long distance in a pipe in cold conditions along the seabed before it is brought up to the platform. Remedies include keeping the gas above the hydrate dew point by insulating the line or injecting hydrate inhibitor additives into the gas to lower the freezing point.