Gas hydrate formation condition: Review on experimental and modeling approaches

Hydrate behavior has been under continuous investigation and so far numerous experimental and modeling examinations have been published since its discovery. In addition, the emergence of new hydrate applications – e.g. energy recovery, gas separation, storage, and transportation – had led scientists toward conducting new and more detailed studies on different aspects of it. It is estimated that in the months at the very beginning of 2013, over 150 hydrate entitled papers were published. In case of studying each hydrate related fields; the issue which should be considered first is formation condition of hydrate. Therefore, this topic has allocated an immense number of articles to itself. This review is intended to overview and classifies the critical studies on hydrate equilibrium condition and reveals the aspects in which still further investigations are required.