For effectively designing and operating plunger lift system and grasping the changes of the plunger dynamics and tubing and casing pressure, the dynamics of the upstroke and after flow and buildup stage is simulated.

• 为了有效的对柱塞举升系统进行设计和操作管理,需要正确预测分析把握柱塞在上下行程中的动态和油套压等参数的变化情况,本文通过对柱塞举升单个周期内的举升阶段、续流阶段和关井压力恢复阶段进行了动态模拟,所做的主要工作如下: