viscous sweeping fluid 高粘度清扫液
Because the filters move with the plunger, the sweeping action of the fluid on the downstroke cleans the filters and keeps sand suspended within the production fluid.
因为滤渣器与泵塞是连轴一起移动的，在下冲程期间进入的液体可以起到冲刷作用，利用液体的冲刷来清理滤渣器，使砂粒悬浮于产出液中。
The results of model and simulation can evaluate the range of oil or gas exploitation, and also the area of injected fluid sweeping.
其结果可用于油气采出范围的预测和计算，并为注入井的科学控制和合理布井提供依据。
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