The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells.
地
污染或工具堵塞;地欠压;地
极差;邻井影响等。
The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells.
地污染或工具堵塞;地欠压;地极差;邻井影响等。
明：以上例句、词
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