An Overview of Methane Gas Hydrate Formation

This article reviews the formation of methane gas hydrate. Gaseous hydrates are solid and crystalline grids of water molecules that are hydrogen bonded together and trap low molecular weight gas molecules in their cavities. The type of these gases depends on the gaseous composition of the environment. Methane of thermogenic and biogenic origin is the most common gas stored in gas hydrates and makes up about ۹۹% of the gases that make up gas hydrates. Gaseous hydrates are very different from ice and, unlike ice under high pressure conditions, also form at temperatures above zero degrees Celsius. Understand the conditions under which gaseous hydrates are formed and remain stable to determine the extent. This source of energy is essential. Gaseous hydrates are very sensitive to environmental conditions and changes in pressure, temperature, water salinity, type and amount of saturated gas forming hydrate inside the pores of the sediment, cause the growth and stable conditions of gas hydrates. Gaseous hydrates are formed in systems that include water and gas, a network of water molecules (host molecules), paraffin’s such as methane, ethane, propane, isobutene, carbon dioxide, etc. (guest molecules). High pressures trap in their cavities. Gaseous hydrates are non-stoichiometric solids that are similar in appearance to ice (or snow) but completely different in structure.

کلیدواژه ها:

hydrate ، Methane ، Sediment ، Water ، Carbon dioxide