深海天然气水合物钻探取心的难点与对策

Difficulties and countermeasures of gas hydrates coring drilling of marine deep water

王智锋 许俊良

WANG Zhifeng XU Junliang

中国石油大学石油工程学院，山东东营　 257061 胜利石油管理局钻井工艺研究院，山东东营　257017

College of Petroleum Engineering, China University of Petroleum, Dongying 257061, China Drilling Technology Research Institute, Shengli Petroleum Administration Bureau, Dongying 257017, China

文中简要介绍了天然气水合物的性质、形成、稳定条件、分布情况以及国内外勘查研究新动向，从钻探风险、储存温度、岩样获取、钻探设备等方面分析了天然气水合物钻探取心的难点，提出了天然气水合物钻探取心有关技术问题和解决的对策，提出了国内开展天然气水合物钻探取心的工作思路，对国内开展相关技术的研究有一定的指导意义。

　In this paper, the nature, formation, stable conditions, distribution, and new trends of investigation both at home and abroad of gas hydrates are briefly introduced. The difficulties in gas hydrates coring drilling are discussed, and the countermeasures are put forward. Furthermore, the ideas of carrying out gas hydrates coring drilling in China are proposed. All these may help the research on related technologies in the country.