Hydrocarbon Source, Accumulation Mechanism and Exploratory Potential of Igneous Reservoir

• 责任者：Meng Fanchao (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Liu Jiaqi
• 刊名：Xinjiang Petroleum Geology
• 出版年：2010
• 卷期：31(1)
• 关键词：火成岩油气藏 ; igneous reservoir
• 页码：p.102-106
• 图表：1 table, 32 refs.
• 分类号：1003
• issnNo：ISSN1001-3873
• isbnNo：CN65-1107/TE

The study progresses of igneous petroleum reservoirs at home and abroad are reviewed. The results show that the commercial igneous reservoirs are dominated by those with biogenic hydrocarbons, but inorganic petroleum reservoirs should be paid great attention to. It is illustrated that primary mantle outgassing, the rebalancing of C-O-H fluid within the closed system in late-magmatic stage of less than 500℃ and the mineral-fluid Fischer-Tropsch (FT) reactions in post-magmatic stage are the main sources of inorganic hydrocarbons. The source rocks in faulted period of basins in eastern China are well developed, with mantle-derived hydrocarbons in regional volcanic mantle inclusions and volcanic spring gas. The combinations of Alkaline-peralkaline granites and basic/ultrabasic igneous rocks are of suitable for FT reactions.