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现代地质 ›› 2015, Vol. 29 ›› Issue (5): 995-1001.

• 天然气水合物调查评价专辑 • 上一篇    下一篇

青海木里三露天冻土天然气水合物气源性质研究

卢振权1，2，唐世琪1，3，王伟超4，谭盼盼2，3，李清海4，刘文进4，刘昌岭5，李永红4   

  1. (1.中国地质调查局 油气资源调查中心，北京100029； 2.中国地质科学院 矿产资源研究所，北京100037；
    3.中国地质大学(北京)地球科学与资源学院，北京100083； 4.青海煤炭地质一0五勘探队，青海 西宁810007；
    5.中国地质调查局 青岛海洋地质研究所，山东 青岛266071)
  • 出版日期:2015-10-29 发布日期:2015-12-24
  • 作者简介:卢振权，男，研究员，1972年出生， 地质学、地球化学专业，从事天然气水合物地质地球化学勘查等研究。 Email：luzhq@vip.sina.com。
  • 基金资助:

    神华青海能源开发有限责任公司“青海省天峻县聚乎更煤矿区三露天天然气水合物调查评价项目”(SHQHNY201307001)；中国地质调查局“祁连山冻土区天然气水合物资源勘查”项目(GZH201400302)；中国地质调查局“陆域天然气水合物环境监测及效应研究”项目(GZH201400308)；中国地质调查局“南祁连盆地油气资源战略调查”项目(1211302108021-3)。

Study on the Nature of Gas Source for Permafrost-associated Gas Hydrate in Sanlutian of Muli, Qinghai

LU Zhen-quan1,2, TANG Shi-qi1,3, WANG Wei-chao4, TAN Pan-pan2,3, LI Qing-hai4, LIU Wen-jin4, LIU Chang-ling5, LI Yong-hong4   

  1. (1.Oil & Gas Survey, China Geological Survey, Beijing 100029,China; 2.Institute of Mineral Resources, Chinese Academy of Geological Sciences,
    Beijing 100037,China; 3.School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    4.Qinghai No.105 Coal Geological Exploration Team, Xining, Qinghai 810007,China;
    5.Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, Shandong 266071,China)
  • Online:2015-10-29 Published:2015-12-24

PDF (PC)

689

被引次数

13

摘要：

祁连山木里地区自2008年首次钻获到天然气水合物实物样品以来，其气源问题一直成为焦点。此次重点对神华青海能源开发有限责任公司投资项目实施的青海木里三露天天然气水合物系列钻井的岩心解析气的组成与甲烷碳及氢同位素、岩心顶空气的组成等进行了分析，结合不同钻井天然气水合物本身的气体组成和甲烷碳及氢同位素特征，进一步探讨了该区天然气水合物气源的成因与性质。结果显示：研究区内气源为混合成因，其中东部地区气源以微生物成因气为主，并混合少量热成因气；中西部地区气源以热成因气为主，其热解气具有原油裂解气特征，少部分具微生物改造气特征，同时还混合有部分微生物气及少量煤成气。

关键词: 冻土区, 天然气水合物, 气源, 性质, 青海木里三露天

Abstract:

Since the first drilling discovery of gas hydrate samples in Muli of Qilian Mountain permafrost in 2008, the gas source problem has become the focus. On the basis of previous work, the analysis of gas composition and methane carbon and hydrogen isotopes in adsorbed gases from cores, and of gas composition in headspace gas from cores was conducted in the paper. Those samples were collected from the gas hydrate drillings which were invested by Shenhua project in Sanlutian of Muli. Combined with gas composition and methane carbon and hydrogen isotope feature of gas hydrate in the relevant drillings, the analytical results are to further explore the genesis and properties of gas source for gas hydrate in this area. The results show that the gas source in the study area is of mixed genesis. The gas source is mainly composed of microbial gas partially mixed with a small amount of thermo-genic gas in the eastern part of the study area. The gas source is mainly composed of thermo-genic gas and secondarily of some microbial gas with a small amount of coal-derived gas in the middle to east of the study area. The thermo-genic gas is characteristic of crude oil cracking gas, and partly of microbial transformation gas.

Key words: permafrost, gas hydrate, gas source, nature, Sanlutian of Muli in Qinghai

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