当关井时，柱塞沿生产管柱向下降落。
When the well is shut-in, a plunger is dropped down the production string.
为此，结合生产实际提出了有效的防治措施：（1）简化井下生产管柱；
Thereby the following measures are put forward: (1) simplifying the production string;
为此，结合生产实际提出了有效的防治措施：（1）简化井下生产管柱；
Thereby the following measures are put forward: (1) simplifying the production string;
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