在生产分析中，不同时刻下随着产出液回流到地面的示踪剂浓度可用于确定每个生产层段的有效性。
For production analysis, the concentration of the tracers that flows back to the surface over time can determine the effectiveness of each stage.
混合流动也可描述流体从两个或多个分离的层段通过单一的导管流体进行的生产。
Commingled flow may also describe the production of fluid from two or more separate zones through a single conduit.
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。
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.
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