Hydrate Formation Conditions of Methane Hydrogen Sulfide Mixtures

Abstract

The objective of the study is to determine hydrate formation conditions of methane-hydrogen sulfide mixtures. An experimental work is carried out with different H₂S concentrations and both brine and distilled water. The Black Sea conditions, which are suitable for methane-hydrogen sulfide hydrate formation, are examined. Effects of H₂S concentration and salinity on the hydrate formation conditions are also obtained during the study. It is concluded that an increase in the salinity shifts the methane-hydrogen sulfide hydrate equilibrium condition to lower equilibrium temperatures at a given pressure. With an increase in H₂S concentration, the methane hydrogen sulfide hydrate formation conditions reach higher equilibrium temperature values at a given pressure.

Keywords::

• gas hydrates
• H₂S concentration
• hydrate formation conditions
• methane-hydrogen sulfide mixtures
• salinity