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对芳深 9、芳深 7、芳深 6井的天然气组成及甲烷同位素分析表明 ,松辽盆地北部昌德CO2 气为幔源无机气 ,该CO2 气是以由徐家围子连锁断层系下延与局部岩浆房相接作为通道 ,幔源热流底辟体中的CO2 气顺断层上移至合适的火山岩圈闭中而成藏的
The natural gas composition and methane isotopic analysis of Fangshen 9, Fangshen 7 and Fangshen 6 show that the Changde CO2 gas in the northern part of Songliao Basin is mantle-derived inorganic gas, which is derived from the lower extension of Xujiaweizi fault system Connected with the local magma chamber as a channel, the CO2 gas-shoal fault in the mantle-derived heat flow diapiric body moves upwards into the appropriate volcanic trap to accumulate