油气“倒灌”论质疑

油气运移是石油地质学的重要课题,而油气“倒灌”成藏则是备受争议的议题之一。该文以3个盆地4个油气藏（层）（四川盆地威远气田、鄂尔多斯盆地的西峰油田与靖远气田、松辽盆地扶杨油层）为例,分析了在这些盆地油气藏存在深部油气向上运移成藏的可能性。相比之下,油气“倒灌”违背物理学基本定律,即油气总是在浮力作用下自下而上运移的。确立油气深部来源的观点,可以解放思想,拓宽勘探领域,特别是为基岩油气藏的勘探提供了理论基础。

Query about petroleum downward migration

Petroleum migration is an important issue in petroleum geology, and petroleum downward migration is a controversary figure. Taking the Weiyuan Gasfield in Sichun Basin, Xifeng Oilfield and Jinybian Gasfield in Ordos Basin and Fuyang reservoir in Songliao Basin as examples, the probability of deep source oil and gas which could migrate upward and accumulate in some traps is analyzed. The concept of petroleum downward migration violates the fundamental law of physics by which the oil and gas always migrate upward from below due to the buoyancy action. If the viewpoi nt of petroleum deep source is recognized, the petroleum exploration targets could be expanded, which provides theoretical foundation for the exploration of basement reservoirs.