合肥盆地石炭系—二叠系储层流体包裹体特征与油气运移研究

合肥盆地石炭系—二叠系具有油气勘探潜力，但研究薄弱。根据盆地中部安参1井石炭系—二叠系储层中流体 包裹体的岩相学分析及显微测温，主要讨论了油气运移特征。结果表明，储层石英微裂隙及次生加大边中与油气包裹 体伴生的盐水包裹体均一温度主要在145.2~150.2℃，155.6~160℃及169.9~177.9℃等三个温度区间。结合储层埋藏史-热 史，发现储层主要经历了3期流体充注，时间在162.1~157.2 Ma之间（晚侏罗世）。通过包裹体冰点的测定，得到每一 期流体的盐度特征，结合构造演化、烃源岩发育背景，推测油气主要是在石炭系—二叠系地层内部运移，同时也可能 有新元古界、下古生界等深部的热液通过深大断裂运移到石炭系—二叠系，参与了油气的运聚，这在研究区今后的油 气成藏研究中需要注意。
Research about the Carboniferous-Permian reservoir in Hefei Basin with good petroleum potential is lacking. We mainly discuss the petroleum migration features through petrology and microthermometry analysis of the widely developed fluid inclusions in the well AnCan 1. The results show that the homogenization temperature of these aqueous inclusions in quartz micro-cracks and quartz secondary enlargement edge are mainly at 145.2~150.2℃, 155.6~160℃ and 169.9~177.9℃ . Combined with the burial history-thermal history, we speculate that the reservoir experienced three major oil and gas filling stages during 162.1~157.2 Ma (Late Jurassic). By