液氮冷源外置式天然气水合物孔底冷冻绳索取样器的研制  

The Development of Wire-line Sampling Drilling Tool for Gas Hydrates by Hole Bottom Freezing with Development of Wire-line Sampling Drilling Tool for Gas Hydrates by Hole Bottom Freezing with Liquid Nitrogen as External Cold Source

作　　者：王元[1] 郭威[1] 孙友宏[1] 贾瑞[1] 刘华南[1] 薛军[1] 

机构地区：[1]吉林大学建设工程学院,吉林长春130026

出　　处：《探矿工程（岩土钻掘工程）》2013年第6期1-3,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局项目(GZHL20110320;GZHL20110326)

摘　　要：针对天然气水合物存在环境和性质的特殊性,研制了新型天然气水合物孔底冷冻取样器。取样器采用冷源外置式,通过绳索取心方式,实现孔底冷冻岩样。介绍了新型取样器的冷冻方式、工作原理和主要结构特点。According to the characteristics of existing environment and natures of gas hydrates, a new gas hydrates sampler with hole bottom freezing is developed. The sampling was realized by wire-line coring with liquid nitrogen as external cold source. The paper describes the freezing method, operating principle and the main structure features.

关 键 词：天然气水合物 孔底冷冻 绳索取心 液氮 冷源外置 

分 类 号：P634.43[天文地球—地质矿产勘探]