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从气井柱塞上行程的动力学分析入手 ,充分考虑地层产气、产液等因素对柱塞及液柱上升的影响 ,建立了柱塞上、下行程动态模型 ,同时结合气井生产动态 ,建立了柱塞举升排液采气优化设计模型。利用该模型能够计算气井生产时的积液速度、柱塞最佳上升速度以及将井底液柱举升至地面所需要的最高套压值 ,从而可以预测出柱塞排液的运行周期数和周期举液量。现场试验证明 ,该模型将柱塞运行动态与气井的生产动态较好地结合 ,能够适应液体、井况和油藏参数或特性的变化 ,预测结果与实际结果吻合较好 ,具有普遍的实用性。
Starting from the dynamic analysis of the upward stroke of the gas well plunger, the dynamic model of the up and down stroke of the plunger was established by fully considering the influence of gas production and liquid production on the rising of the plunger and the liquid column. Combined with the production dynamics of the gas well, Optimized Design Model of Plunger Lifting and Draining Gas Production. The model can be used to calculate the velocity of liquid production during well production, the optimum rising velocity of the plunger and the maximum casing pressure required to lift the downhole liquid column to the ground so as to predict the number of operating periods Period of liquid volume. Field tests show that the model combines the dynamic of plunger operation with the production dynamics of gas well and can adapt to the changes of fluid and well conditions and reservoir parameters or characteristics. The prediction results are in good agreement with the actual results and have universal practicability .