油层套管，又称生产套管。是油气井套管程序里的最后一层套管，从井口一直下到穿过的油气层以下。
... production stream 采出液流 production string 油层套管 production surplus 生产过剩 ...
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产油层未下套管的油井 run barefoot
油层套管开窗侧钻是老油田盘活报废井、提高采收率的重要手段。
Casing side tracking is a very important measure to save the abandoned well and improve the recovery efficient.
在油气井中，油层套管内压力变化是最普遍、最常见的一种现象。
It is a most popular and common occurrence that pressure changes in production casing.
近年来，我国使用的进口和国产油层套管中，射孔性能的差异很大。
There is a large difference in the perforation performances between imported casing pipes of oil layer and that produced in China recent years.
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