南海天然气水合物取样技术现状及发展建议

为了进一步完善南海天然气水合物钻探取样技术，在前期取样工具研发和现场试验的基础上，分析了南海取样环境和天然气水合物特性对天然气水合物钻探取样技术的需求，总结了天然气水合物取样技术的现状，分析了取样工具研发过程中工具尺寸、低温保温、密封阀和取样作业方式等方面遇到的技术难点，提出了满足实际需求采取的技术措施，研制了适用于南海天然气水合物取样的绳索保温保压取样工具，并探讨了天然气水合物取样技术今后的研究方向。研究结果为南海天然气水合物取样技术的进一步发展和完善提供了技术参考。 

Current Status and Development Recommendations for Gas Hydrate Sampling Technology in the South China Sea

In order to further improve gas hydrate drilling and sampling technology in the South China Sea, the requirements of the South China Sea sampling environment and gas hydrate characteristics of gas hydrate drilling and sampling technology were analyzed based on pre-development and field testing, which provided a detailed introduction to the sampling technology. Through an analysis of the difficulties encountered in developing sampling tools in key aspects such as tool size, low temperature insulation, sealing valve, sampling operation mode, etc., the countermeasures were studied according to the actual needs, by which a rope pressure-temperature-preserving sampling tool that suitable for gas hydrate sampling in the South China Sea was developed, along with recommendations having to do with the future research direction of gas hydrate drilling sampling technology. The result is a technical reference and a best practices guide for the further development and improvement of gas hydrate sampling technology in the South China Sea.