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根据松辽盆地断裂纵向导流机理及判别方法,由敖古拉断裂活动期、断穿地层流变性和断裂改造作用确定了其纵向开启性及明水组沉积后期和依安组沉积末期两个主要纵向导流期;提出敖古拉断裂在纵向开启期是油气向西运移的“中转站”,在纵向封闭期其横向封堵性取决于东盘输导层对置地层的输导比。并根据敖古拉断裂西盘地层输导比计算出其静止期横向封堵率达73.4％。由此确定敖古拉断裂阻挡了大部分由齐家—古龙凹陷向西运移的油气。
Based on the longitudinal diversion mechanism and discrimination method of the fault in Songliao Basin, the vertical opening characteristics of the Aoqula fault and the stratigraphic rheology and fracture alteration of the fault zone have been established, and two The main vertical diversion period. It is proposed that the Aogela fault is the “transfer station” for oil to gas migration to the west during the vertical opening period. The horizontal sealing of the Aogela fault in the vertical closure period depends on the transmission ratio . According to the transport ratio of West Plateau formation in Aoqula fault, the horizontal blocking rate at rest was calculated to reach 73.4%. It is thus confirmed that the Aoqula fault blocked the majority of oil and gas migrating westwards from the Qijia-Gulong Sag.