In case of a condensing gas drive, the original reservoir fluid and the injection gas are not miscible, but miscibility may be achieved at a later time, at the injection well. 如果進行凝析氣驅，注入井中的原始液體與注入氣在起初是不可能混相的，但過一定時間混相則可能發生。
Dynamic analysis of gas formation revealed that the resisting force for the capillary tubes in the Upper Paleozoic reservoir was so high that it prevented the remigration of gas. 含氣範圍內的同一氣層連通性較差，氣水分佈受區域構造控制，局部明顯存在邊底水，也沒有整體活塞式氣驅水作用形成的區域性氣水界面。
