物探与化探2017，Vol.41Issue(6)：1075-1080,6.DOI:10.11720/wtyht.2017.6.12
祁连山冻土区天然气水合物游离气测量技术试验
Test of natural hydrate free-gas measuring technique in permafrost region of Qilian Mountain
摘要
Abstract
The field measuring test of free-gas methane was carried out in Muli known hydrate region of Qinghai through west portable soil flux measuring instrument and G2132-iAnalyzer Methane-carbon isotope analyzer.The spatial distribution of free-gas methane characteristic values and geochemical anomaly reveals that there exist good free-gas methane geochemical anomalies above the hydrate deposit,while the spatial distribution of the anomalies is controlled by ore-controlling fractures and underground mineral resources,show ing corresponding relation.The research on organic geochemistry and carbon isotope indicates that the gas hydrates in Qilian permafrost region is of thermal origin.The free-gas methane field analysis shows that the free-gas methane geochemical anomaly is mainly of thermal and microorganism origin,and the free-gas methane experiment in winter can reduce the interference of the surface microbial action.The study results indicates that the free-gas methane field measuring technique is applicable to the natural gas hydrate exploration,which can not only indicate the hydrate deposits but also serve as the mutual supplement to other hydrates geochemical exploration techniques,with the best sampling time being winter.关键词
游离气/甲烷通量/冻土区/天然气水合物/祁连山Key words
free-gas/methane flux/permafrost region/natural gas hydrate/Qilian Mountain分类
天文与地球科学引用本文复制引用
周亚龙,张富贵,杨志斌,唐瑞玲,孙忠军,张舜尧,王惠艳..祁连山冻土区天然气水合物游离气测量技术试验[J].物探与化探,2017,41(6):1075-1080,6.基金项目
国家127专项项目(GZHL20110324) （GZHL20110324）
中央公益性科研院所基本科研业务专项基金(AS2015J02) （AS2015J02）
