According to the correlation properties of natural gas hydrate

several main methods of exploitation of natural gas hydrate are compared and summarized. Based on the current theory on hydraulic lifting process of the natural gas hydrate

the minimum lifting speed of the natural gas hydrate particles is studied

and the minimum velocity was calculated by using the theory of the minimum velocity of hydraulic lifting with the natural gas hydrate particles. The theoretical modeling of the pipeline transportation system of the hydraulic lifting system is carried out

and used to study the effects of particle size. The particle diameter is studied

and compared with that on the pressure drop of gas hydrate in the pipeline system.