物探与化探2017，Vol.41Issue(6)：1167-1174,8.DOI:10.11720/wtyht.2017.6.24
音频大地电磁测深在祁连山哈拉湖坳陷天然气水合物调查中的应用
The application of audio frequency magnetotelluric sounding to the investigation of gas hydrate in the Hala Lake depression of the Qilian Mountain
摘要
Abstract
The Hala Lake depression in Qilian Mountain has similar conditions for the discovery of the gas hydrate in the Qilian area,which is the key area of the hydrate exploration in the permafrost region of the Tibetan Plateau.By analyzing 45 sections in Hala Lake and conducting audio frequency magnetotelluric survey with total length of 606.4 km,the depression structure and distribution of frozen soil were studied for their electrical characteristics.According to the east and west distribution electrical characteristics of Hala Lake area,the authors mainly analyzed structural features of the east part and the west part of Hala Lake.It is shown that the inner depression testing area of Hala Lake can be divided into 3 depression areas and 2 upwelling areas.The authors also analyzed the distribution and scales of depression areas and 2 upwelling areas.26 fractures were recognized within the depression testing zone of Hala Lake.These fractures mainly strike in NW—SE direction.The main controlling fractures in the testing area were also discussed.The authors summarized the development characteristics of frozen soil in Hala Lake area and analyzed the main factors influencing the development of the frozen soil.According to the abnormal structure,frozen soil and geochemistry of hydrocarbons,the authors indicate the favorable areas for natural gas hydrate exploration.关键词
天然气水合物/冻土/电磁法/哈拉湖坳陷Key words
natural gas hydrate/frozen soil/electromagnetic method分类
天文与地球科学引用本文复制引用
何梅兴,裴发根,方慧,张鹏辉,刘畅往,杜炳锐,吕琴音,仇根根..音频大地电磁测深在祁连山哈拉湖坳陷天然气水合物调查中的应用[J].物探与化探,2017,41(6):1167-1174,8.基金项目
国家127专项项目(GZH201400302) （GZH201400302）
中国地质调查局地质调查项目(DD20160224,DD20179352) （DD20160224,DD20179352）
国家高技术研究发展计划(“863计划”)课题(2012AA061403) （“863计划”）
