天然气水合物保真取样钻具的试验研究

由于天然气水合物生存环境及特性特殊,所以了解其物化特性最有效的方法是通过钻探取样。天然气水合物钻探取样的关键是要有满足要求的钻探设备、钻探工具、钻探工艺及特殊的冲洗液。介绍了天然气水合物取样钻具的结构、原理、特点、钻进工艺及试验结果。根据海洋钻井的特点,提出了中国实施天然气水合物钻探经济实用的施工方案。

Test Research on In-situ Sampler for Gas Hydrate

Since the existence environment and the characteristic of the gas hydrate are special, the most effective way to really get to know the physics and chemical natures of gas hydrate is to depend on the drilling sampling. Drilling equipment, drilling tool, drilling technologies and special drilling fluid are the most important factors to meet the requirement of the drilling and sampling engineering. The structures and principles, features, drilling technology and trial result of the sampling drilling tools for gas hydrate are introduced in the paper. And also, according to the characteristic of ocean drilling, the practical and economical drilling program for gas hydrates drilling in China is presented.