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. 如果进行凝析气驱，注入井中的原始液体与注入气在起初是不可能混相的，但过一定时间混相则可能发生。
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. 含气范围内的同一气层连通性较差，气水分布受区域构造控制，局部明显存在边底水，也没有整体活塞式气驱水作用形成的区域性气水界面。
