Gas Source of Carbon Dioxide and Its Degassing Model in Songliao Basin
详细信息
- 责任者：Li Zhensheng (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Zhang Wenjun
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(1)
- 关键词：二氧化碳 ; carbon dioxide ; 气藏 ; gas reservoirs ; 松辽平原 ; Songliao Plain
- 页码：p.29-37
- 图表：2 illus., 1 table, 34 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
Based on comprehensive analysis of carbon dioxide natural gas and regional geology, gas source of carbon dioxide and its degassing model are discussed. Study reveals that carbon dioxide in Songliao Basin can be from mantle-derived magma, volcanic rocks, carbonate rocks and organic matters. Mantle-derived magma in crystalline basement, especially Cenozoic alkali basaltic magma, is the most significant gas source. Volcanic rocks in sedimentary cover are another significant gas source, and medium-acidic volcanic rocks of Yingcheng and Denglouku Formations could be principal gas source in east Changde gas pool. Carbonic-Permian carbonate rocks in metamorphic basement need more attention to study as gas source in future exploration.