海底天然气水合物取样器冷却技术研究现状

Research Status of Cooling Technology for Submarine Natural Gas Hydrate Sampler

天然气水合物是一种潜力巨大的替代性能源,其可以稳定地存在于一定的低温高压条件之下。在天然气水合物钻探作业中,冷却保温技术是天然气水合物钻探的关键技术之一。低温可以抑制天然气水合物分解,这对获取水合物样品有着十分重要的作用。本文首先概述了海底天然气水合物取样器保温冷却技术研究现状,并对取样器冷却保温技术进行深入的调查研究和分析。然后对日本的PTCS取样器中的冷却保温技术和国内具有冷却保温功能的取样器进行了详细介绍,并对相关技术进行分析和总结,最后对海底天然气水合物取样器冷却保温技术的发展做了总结与展望。

Natural gas hydrate is a potential alternative energy source that is stable under the conditions of certain low tem- peratures and high pressures. In the gas hydrate drilling, cooling and temperature insulating technology is one of the key technologies. Low temperature can inhibit the decomposition natural gas hydrate, which is very important for hydrate sam- ples obtaining. This paper summarizes the research status of submarine natural gas hydrate sampler in cooling and tempera- ture insulating technology at the first, the thorough investigation and analysis are made. Then the cooling and temperature insulating technology of Japan PTCS sampler and the sampler technology in China are described in detail, the related tech- nologies are analyzed and summarized. Finally, the development of the cooling and temperature insulating technology for the natural gas hydrate sampler is summarized and predicted.