Research Progress on Hydrate Self-Preservation Effect Applied to Storage and Transportation of Natural Gas

Storage and transportation of natural gas with NGH method is a kind of novel technology developing rapidly at domestic and overseas currently. The stability and dissociation characteristic of hydrate at different temperature and pressure is a significant basis on its application and development. The existence of anomalous self-preservation effect indicates that gas hydrates have favorable stability in special low temperature range, and it provides theoretical and experimental basis for storage and transportation of natural gas with NGH method. The paper reviews study history and research development of hydrate self-preservation effect, and points out challenges for developing storage and transportation technology of natural gas with NGH.