天然气水合物勘探-开发-储运-环境响应研究新进展--第五届天然气水合物国际会议简介

主要根据第五届天然气水合物国际会议(ICGH5)的资料,介绍了天然气水合物勘探、开发、储运和环境响应研究的新进展.在勘探、开发方面,主要使用多维地震和核磁共振等方法来研究天然气水合物的分布情况,并根据天然气水合物声阻抗与沉积物孔隙度之间的关系来估算天然气水合物的资源量;在储运方面,与传统的液化天然气方法相比,以天然气水合物丸粒形式储运天然气所需的费用和所消耗的总能量以及所释放出的CO2相对较少;在环境响应方面,对深海储存CO2以及CH4流体对海洋和大气影响的研究,为解决天然气水合物可能引起的环境问题提供了新的思路.最后,介绍了各国天然气水合物的研究情况,并对天然气水合物研究中尚需解决的问题进行了展望.

Developments in Exploration, Resources, Storage-Transportation and Environment of Natural Gas Hydrate

This paper introduces the new research developments of gas hydrates on exploration, resources, storage-transportation and environment based on the Proceeding of the Fifth International Conference on Gas Hydrates(ICGH5). Multi-dimension seismic survey and NMR methods are applied to show regional distribution of gas hydrate while acoustic impedance for rock property information has been used to calculate the amount. On the other hand, it illustrates that the transportation of natural gas in the form of natural gas hydrate (NGH) pellet is a new means of natural gas transport, which is seemingly superior to the traditional way of liquefied natural gas(LNG). Hydrates for deep ocean storage of CO_2 and study of methane flow provide a new conception to solve the environmental problems due to gas hydrates. Finally, it discusses the researches on gas hydrate of different countries and gives an expectation of challenging problems in gas hydrate.