... multiple-zone field 多产层油、气田 multiple-zone production 多层开采 multiple-zone subsea completion 水下多层完井 ...
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A section of heavy walled tubing that is placed across any perforated interval through which the production tubing must pass, such as may be required in multiple zone completions.
置于任一射孔层段的一段厚壁油管，这时生产油管必须通过此射孔层段，如在多层完井中所要求的。
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