套管内砾石充填防砂是一种行之有效的防砂方法。
The gravel packing in casing is a effective method to prevent sand production.
在砾石充填防砂评价中，充填系数是评价砾石充填好坏的重要参数之一。
In the evaluation of gravel filling sand prevention, the filling coefficient is one of important parameters to evaluate gravel filling whether good or not.
为水平井砾石充填防砂设计提供了优化设计参数。
It provided the optimum design parameters for gravel packing sand control design in horizontal well.
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