天然气水合物钻探的关键技术  

The Key Technologies for Natural Gas Hydrate Drilling

作　　者：姚彤宝[1] 

机构地区：[1]中国煤炭地质总局,北京100039

出　　处：《地质装备》2010年第5期30-33,共4页Equipment for Geotechnical Engineering

摘　　要：钻探取样技术因能直观、准确地揭露天然气水合物的赋存状态,成为国内外天然气水合物勘查与研究的必要手段之一。本文根据天然气水合物的热物理力学特性,通过计算机模拟了0℃以上甲烷水合物和二氧化碳水合物在不同温度-压力条件下的分解过程,探讨了天然气水合物钻探的关键技术,针对青藏高原高寒永冻地区,给出了天然气水合物钻探技术的初步建议。Coring drilling has become one of the necessary methods to natural gas hydrate prospecting and studying, because it can directly and accurately uncover the occurring state of the hydrate. Based on thermal physical mechanics of natural gas hydrate and simulated methane hydrates and carbon dioxide hydrates under different temperature（0℃ all above） /pressure condition, this paper discussed natural gas hydrate drilling,then gave certain preliminary recommendations for gas hydrate drilling in Qinghai-Tibet Plateau alpine permafrost regions.

关 键 词：天然气水合物 热物理力学 钻探取样 

分 类 号：P744.4[天文地球—海洋科学]