CAJ | 학술논문

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。
천연기지하저기고적운행,준학적학정고내각단정적운행동태비상중요。통과건립단정이유기수량상경향모형,채용전은식우돈질대해법,수치모의출재만족성시조봉수구시저고내단정적동태특정。모의실례적계산결과표명:저고주채운행초기,압력변화교쾌후추평은,차채출동량기체Δp적하강비주입동량기체Δp승고변화대。해모형대개선저고적저존효과,제고채수솔,구유흔대적이론지도의의。
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.