Overpressured gas reservoir being a kind of special gas reservoir, can be found all over the world, whose pressure gradient is greater than 0.
异常高压气藏作为一种特殊气藏，几乎遍布于世界各地，其压力梯度可以高达0。
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In addition, this paper deduce identification method suitable for Overpressured gas reservoir waterflood by means of that of normal pressure gas reservoir.