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1. 发明授权

US5605195A Inflation shape control system for inflatable packers 失效
标题翻译：用于充气包装机的充气形状控制系统
公开(公告)号：US5605195A
公开(公告)日：1997-02-25
申请号：US585215
申请日：1996-01-11
申请人： David M. Eslinger , L. Michael McKee , Robert M. Sorem , Kevin L. Case , Jean L. Pessin
发明人： David M. Eslinger , L. Michael McKee , Robert M. Sorem , Kevin L. Case , Jean L. Pessin
IPC分类号： E21B33/127
CPC分类号： E21B33/127
摘要： An inflatable packer used in a well and having a mandrel carrying upper and lower heads, a normally retracted inflatable packer element including an inner elastomer bladder and an outer expansible armor or carcass, the ends of the packer element being anchored to respective heads, and in one embodiment a hydraulically operable system that applies restraining force to the heads which controls the shape and deployment of the packer element during inflation and prevents entrapment of fluid bubbles outside the element and the formation of Z-folds in the bladder. In other embodiments the restraining force is supplied by a stack of disc springs, by frictional engagement between parts, by a shearing action of materials, by swaging a sleeve member, and by axially crushing a sleeve member.
摘要翻译：一种用于井中并且具有承载上下头部的心轴的充气封隔器，包括内部弹性体气囊和外部可膨胀装甲或胎体的正常缩回的充气封隔器元件，封隔器元件的端部锚定到相应的头部，并且一个实施例是一种液压可操作的系统，其将限制力施加到头部，所述头部在充气期间控制封隔器元件的形状和展开，并且防止流体气泡在元件外部截留并在囊中形成Z-折叠。在其他实施例中，限制力由一堆盘簧，通过部件之间的摩擦接合，材料的剪切作用，通过套套套筒构件，以及通过轴向压碎套筒构件来提供。

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