packer device
... packer deflection 封隔器变形 packer device 封隔器装置 packer element 封隔器密封元件 ...
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在转换至封隔器装置上面的环空以前，回流的携带液在工具底部进入内部流动通道，于是将环空隔离。
The returned carrier fluid enters the internal flow path at the base of the tool before crossing over to the annulus above the packer assembly, isolating the annulus.
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