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通过建立底水驱枯竭气藏型天然气地下储气库的注采动态数学模型，采用分数步长解法，以储库平均地层压力和含水饱和度的动态变化特征为目标函数，数值模拟出储气的历史过程，预测储库的储存容量，研究储库注采的动态特征。
By establishing dynamic mathematical model of injection and production of underground gas storage and depletion gas reservoir, using fractional step solution method, taking the dynamic change of reservoir average formation pressure and water saturation as objective function, numerical simulation of gas storage The history of the process to predict the storage capacity of the reservoir, study the dynamic characteristics of reservoir injection.