封隔器两种最常见的形式是生产封隔器或者测试封隔器和膨胀式封隔器。
The two most common forms are the production or test packer and the inflatable packer.
而膨胀式封隔器的膨胀则是通过泵送流体进入囊状物，与气球大约同样的方式，但是比气球具有更坚固的结构。
The expansion of the latter is accomplished by pumping a fluid into a bladder, in much the same fashion as a balloon, but having more robust construction.
生产封隔器或者测试封隔器可能下入下套管的井段，而膨胀式封隔器可以在裸眼井段使用，也可以在下套管井段使用。
Production or test packers may be set in cased holes and inflatable packers are used in open or cased holes.
如果工具管柱外径有可能增加（如在射孔或使用膨胀式封隔器时），则在下入工具管柱和起出工具管柱这两种情况都应考虑井筒最小直径。
The minimum restriction should be considered in both running and retrieving modes if any increase in tool string outside diameter is likely, such as when perforating or when using inflatable packers.
为此研制开发小直径、小卡距、承压高、易操作的膨胀式封隔器系列，设计出适合套变井选层酸化、压裂以及薄层措施改造的多种工艺管柱。
Therefore, a series of special expanded packers with various kinds of advantages such as minor diameter, small spacing, and high bearing pressure, and simplify operation etc.
文中介绍了膨胀式长胶筒封隔器的结构、工作原理及用于钻井、完井的应用情况。
This paper describes its structure, working mechanism, and field using in drilling and completion.
文中介绍了膨胀式长胶筒封隔器的结构、工作原理及用于钻井、完井的应用情况。
This paper describes its structure, working mechanism, and field using in drilling and completion.
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