Based on analyzed thermal physical and mechanics properties of natural gas hydrate and its formation, and discussed mechanical regime of stability of bore well in gas hydrate formation, its influencing factor and stabilization technique in detail with reference to the theory and method of oil and gas well bore stability.

Application and prospect on Japanese food making of deep seawater;

Characteristics of deep seawater resource and its application in beverage processing and wine brewing;

This paper,based on a systematic introduction of the excellent characteristics of deep seawater as resources,summarizes the many applications of deep seawater in the world,and the latest achievements in algae breeding,fish breeding,vegetable growth,food making,wine making,refrigeration,salt making,ice making,and drink production etc.

Sedimentary identification indicators of marine gas hydrate mean indicators closely related with sedimentation during the formation of gas hydrate sediments,and are important indicators to identify marine gas hydrate.

This paper summarizes the new developments and progress on simulation experiments of marine gas hydrate.

To study phase equilibrium conditions of gas hydrate in porous media is very important for scientists to understand the formation mechanism of marine gas hydrate, because it can provide information of formatio.