Introduction
Methane hydrates (also called methane clathrates) is a resource in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice. For information of flow assurance, chemistry, and PVT related topics, refer to Hydrates & Flow Assurance
As a resource, Per unit volume, gas hydrates contain a high amount of gas. For example, 1 cubic yard of hydrate disassociates at atmospheric temperature and pressure to form approximately 160 cubic yards of natural gas plus 0.8 cubic yards of water.
Generally, methane clathrates are common constituents of the shallow marine geosphere, and they occur both in deep sedimentary structures and form outcrops on the ocean floor