【摘要】 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。更多还原

【Abstract】 Plunger lift technology is efficient for rising the energy of a gas liquid well. The dynamics of plunger during uptravel are analyzed. Considering kinds of factors including the effect of gas liquid producing on the rising of plunger and liquid, the dynamic models of up travel and down travel of plunger are established. Moreover, according to the production status of gas wells, an optimal design model is accomplished. It can be used to calculate the velocity of liquid accumulation, the optimal lift velocity of plunger and the maximum casing pressure that is needed to lift liquid column from bottom hole to land surface. Therefore, the number of operation period and the liquid volume are forecasted. The results of field tests indicate that the model can combine the plunger operation performance with the well production status. It is applicable to the changes of fluid, hole condition and character or parameters of reservoir. The calculation agrees with the practical results generally.更多还原