In the paper, strength properties, hydration and hardening process of high-temperature geothermal well cement are studied under different hydrothermal conditions.

Application results were equivalent to that of artificial silica flour, It exhibited good erosion resistance, and to be a good cheap refractory material.

In order to probe into laws on formation of natural gas hydrates in porous medium, natural gas hydrates have been formed through mixtures of ice powers and quartzes in experiments.