A small gap that can form between the casing or liner and the surrounding cement sheath, most commonly formed by variations in temperature or pressure during or after the cementing process.
在套管或衬管与周围的水泥环之间所形成的小间隙，这些间隙是由于在固井期间或固井之后温度或压力的变化所致。
A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.
连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。
To create holes in the casing or liner to achieve efficient communication between the reservoir and the wellbore.
在套管或衬管上产生孔眼，以便在储层与井筒之间实现有效的连通。
This design helps ensure that the mill follows the desired path and does not damage the casing or liner wall as the milling operation progresses.
这种设计有助于确保铣刀沿着所要求的路径并在磨铣作业进行时不会损坏套管壁或衬管壁。
Also, without any casing or liner installed, selective treatments or remedial work within the reservoir section are more difficult.
另外，在没有安装任何套管或衬管的情况下，在储层段的选择性处理或补救作业则更为困难。
A well completion that has no casing or liner set across the reservoir formation, allowing the produced fluids to flow directly into the wellbore.
在储层段没有设置套管或衬管的完井。这种就使产出的流体直接流入井筒。
The external non liner loading of well casing can be improved by changing elastic parameters of the cement mantle.
水泥环的弹性参数和泥岩含水量等对套管外载有一定影响。
The technology of liner subsidy is effectively done to perforated parts and destroyed casing which can prolong the period of the water and oil Wells for production.
衬管补贴工艺技术能实现对射孔井段、套损部位的有效补贴，延长油(水)井开发生产的周期。
The utility model provides a vacuum bottle with a plastic outer casing decorated by a metal plating film, which is composed of a bottle liner, a bottle plug, the outer casing, etc.
本实用新型提供了一种外壳用塑料金属镀膜装饰的保温瓶，由瓶胆、瓶塞、外壳等构成。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
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