The existing techniques and tools of entering casing mainly provide driving force to increase the downward power of the casing so that casing can easily enter horizontal well.
现有的下套管技术和工具主要是对套管提供迫动式驱动力，以增加套管的下行力。
The existing techniques and tools of entering casing mainly provide driving force to increase the downward power of the casing so that casing can easily enter horizontal well.
现有的下套管技术和工具主要是对套管提供迫动式驱动力，以增加套管的下行力。
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