Evolution of Coal-Derived Hydrocarbon Based on the Analysis of Fluid Inclusions in the Permo-Carboniferous Strata of Liulin Area in the Ordos Basin
详细信息
- 责任者：Li Yong (Coalbed Methane Reservoir Laboratory of National Engineering Center ; School of Energy Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Tang Dazhen
- 刊名：Geological Journal of China Universities
- 出版年：2012
- 卷期：18(3)
- 关键词：煤成气 ; coal-formed gas ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.419-426
- 图表：3 illus., 1 table， 12 refs。
- 分类号：1003
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
Four types of fluid inclusions occur in the coal seam roof in the Liulin area including the brine liquid hydrocarbon, liquid-gas hydrocarbon and gas hydrocarbon. Based on the thermodynamic of fluid inclusions, the fluid inclusions in the Shanxi Formation were classified as types of low-temperature and low salinity and of high-temperature and high salinity, while those in the Taiyuan Formation were defined as types of low-temperature and composite-salinity and of high-temperature and high salinity fluids. Types of the fluid inclusions in the Taiyuan Formation testified the superimposed impact of the paralic coal-forming environment to the connectivity with surface freshwater in the later period.