【摘要】 天然气地下储气库的运行，准确的确定库内各单井的运行动态非常重要。通过建立单井二维气水两相径向模型，采用全隐式牛顿迭代解法，数值模拟出在满足城市调峰需求时储库内单井的动态特征。模拟实例的计算结果表明：储库注采运行初期，压力变化较快后趋平稳，且采出同量气体Δp的下降比注入同量气体Δp升高变化大。该模型对改善储库的储存效果，提高采收率，具有很大的理论指导意义。更多还原

【Abstract】  Presents the numeric simulation of dynamic characteristics of single wells in underground water－driven gas reservoirs using the two－dimensional gas and water phase radial model of single wells established and the fully－hidden Newton iteration and concludes from the results of typical calculations that the pressure change is much quicker at the initial stage of operation and gradually becomes steady at later stage and the decrease in Δp for a certain amount of gas is greater than the increase in Δp for the same amount of gas．更多还原