Aqueous trapping display in two aspects, one is the reduction of mobile gas and the degression of gas permeability, the other is the decline of gas production rate and the decrease of gas recovery.
水相圈闭损害主要表现在两个方面，内部表现为可动气量的减少和气相渗透率的下降，外部表现为产气量的下降和气藏采收率的降低。
But if matrix permeability is low, higher recovery rate is not allowed to use due to its low imbibition displacement velocity.
如果基质渗透率较低，因其吸渗排油速度低，不宜采用较高的采油速度。
At last, this paper evaluates some parameters which may have influence on recovery of air injection, reservoir temperature, injecting rate, water saturation, permeability and grid size.
最后通过数值模拟评价了一些影响注空气采收率的参数，油藏温度、注入速度、含水饱和度、渗透率和模型网格大小。
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