物探与化探2017，Vol.41Issue(6)：1068-1074,7.DOI:10.11720/wtyht.2017.6.11
音频大地电磁测深法探测冻土区天然气水合物有效性实验
Effectiveness of audio magnetotelluric sounding for detecting gas hydrate in permafrost regions
摘要
Abstract
The permafrost area of the Tibetan Plateau has good gas hydrate ore-forming condition and prospecting vista;nevertheless,the lack of effective exploration techniques has become an serious bottleneck affecting the investigation and evaluation of land gas hydrate resources.In this paper,experimental study of the effectiveness of detection of gas hydrate by the audio magnetotelluric sounding method (AMT) was carried out,and the results show that the audio magnetotelluric sounding (AMT) method is an effective method for detecting the permafrost-associated gas hydrate.Permafrost is well developed in the study area,but the thickness varies greatly,which has a certain control over gas hydrate formation.Gas hydrate orebodies show three characteristics in electrical property.These characteristics can be used as an identification markers for gas hydrate formation.The hydrate accumulation is controlled by reverse thrust fractures (F1 and F2) on the southern margin of the depression.The fault zone is not only a gas migration channel but also a gas hydrate accumulation space.The research results have positive significance for promoting land gas hydrate exploration technology and resources investigation and evaluation in China.关键词
天然气水合物/音频大地电磁测深法/祁连山木里地区/水合物电性特征Key words
permafrost-associated gas hydrate/audio magnetotelluric sounding/Muli basin of Qilian Mountain/electrical characteristics of gas hydrate分类
天文与地球科学引用本文复制引用
方慧,裴发根,何梅兴,白大为,胡祥云,钟清,杜炳锐,张小博,卢景奇..音频大地电磁测深法探测冻土区天然气水合物有效性实验[J].物探与化探,2017,41(6):1068-1074,7.基金项目
国家高技术研究发展计划(“863”计划)课题(2012AA061403) （“863”计划）
国家127专项项目(GZHL20110324,GZH201400305) （GZHL20110324,GZH201400305）
国土资源部公益性行业科研专项项目(201111019) （201111019）
中国地质调查局地质调查项目(DD20160224) （DD20160224）
