When gas flow velocity in a wellbore is less than a critical gas flow velocity maintaining continuous flowing back in a gas well, a liquid carrying phenomenon occurs in the gas well.

当井筒内气流速度低于维持气井连续排液的临界气流速度时，气井出现携液现象。

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This paper describes six practical working models of gravity cage and evaluates the flow velocity of the inner point and outer back point of the cage net under the condition of pure current.

设计了六种重力式网箱的模型，在单纯流条件下，通过模型试验测试了网箱网内与网后的流速。

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