Advances of formation dynamics of natural gas hydrate

Abstract

It is of great importance for the estimation of reserve, distribution and feasibility of exploitation to study the formation dynamics of natural gas hydrate. Appropriate low temperature and high pressure are the two key parameters for the formation of natural gas hydrate besides gas supply and migration pathway. Meanwhile, the characteristics of the sediment and the existence of the Chloridionand Sulfate ions are also important for the formation of natural gas hydrate. To analyze correctly the formation of natural gas hydrate in some area, we should first obtain detailed historical data of geology, physics and mechanics by geological survey and then build the proper mathematical model. In this paper, summary on several areas has been first processed based on the enough relative data. Next the general and special characteristics of the formation in these areas have been discussed. Then the previous mathematical models for the formation dynamics of natural gas hydrate have been reviewed. The suggestions about the development of the mathematical model for the formation and the main parameter should be focused in the future exploration have been presented.