| As a new type of clean energy,natural gas hydrate is widely distributed in China and has abundant reserves.It is an alternative energy source with great potential.At present,more than 230 sites around the world have discovered and successfully drilled natural gas hydrates,but various problems have arisen during the drilling process,such as hydrate dissolution.Natural gas hydrates still require basic properties studies and further complementation of hydrate sensitivity,drilling experiments and theoretical knowledge.In this paper,the relationship between the temperature and pressure of natural gas hydrate during crystallization and decomposition,the influence factors of temperature and pressure,and the relationship between gas production and pressure are studied experimentally.At the same time,the different rotation speeds in the drilling process are analyzed.The influence of temperature and pressure and the influence of drilling speed on the environment of the whole reactor;further study the influence of speed and drilling speed on the non-drilling horizon.It is found through experiments that the decomposition rate of natural gas hydrate has a great relationship with temperature and pressure.The lower the pressure,the higher the temperature,the faster the decomposition rate and the more sensitive the hydrate temperature is to the environment than the hydrate pressure.The impact of the change.Through the drilling experiment,the temperature and pressure variation in the kettle are increased with the increase of the rotational speed and the drilling speed.In addition,the gas hydrate temperature and pressure curve analysis shows that the natural gas hydrate is concentrated in the upper part of the reactor,and the amount of the lower part is very high.Less conclusions.Through the hydrate experiment and data analysis results,we can help people to have a deeper understanding of the law of gas hydrate phase change,and provide a certain guiding role for the study of hydrte. |
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