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    • 10. 发明授权
    • Stage cementer and inflation packer apparatus
    • 摊铺机和膨胀封隔器装置
    • US5314015A
    • 1994-05-24
    • US923735
    • 1992-07-31
    • Steven G. StreichJohn T. BrandellRichard L. GirouxLee W. Stepp
    • Steven G. StreichJohn T. BrandellRichard L. GirouxLee W. Stepp
    • E21B33/127E21B33/14E21B33/16E21B34/14
    • E21B34/14E21B33/127E21B33/146E21B33/16
    • A stage cementer and inflation packer apparatus. The apparatus comprises a mandrel with an external closing sleeve and an operating sleeve interlocked therewith. Below the operating sleeve is an opening sleeve. The opening sleeve is mechanically acutated by a pump-down plug in a plug-operated embodiment or by a differential pressure acting on the opening sleeve in a hydraulically operated embodiment, to actuate the opening sleeve to allow inflation of the packer element. A back check valve prevents the packer from deflating. After the packer is inflated, additional pressure is applied which ruptures a rupture disc to open a port to the well annulus above the set packer element. Cementing may be carried out through this port, and after the cementing operating, a plug engages the operating sleeve to move the operating sleeve in the external closure sleeve, thereby closing the cementing port. After cementing is complete, the center components of the apparatus may be drilled out, leaving the external closure sleeve to permanently seal the cementing port.
    • 一种阶段胶泥和膨胀封隔器装置。 该装置包括具有外部闭合套筒和与之互锁的操作套筒的心轴。 操作套筒下面是开口套筒。 打开套筒通过插拔操作的实施例中的抽水塞或通过在液压操作的实施例中作用在开启套筒上的压差来机械地进行调节,以致动打开套筒以允许封隔器元件的膨胀。 后止回阀防止包装机放气。 在封隔器膨胀之后,施加额外的压力,其破裂破裂盘以将端口打开到设置的封隔器元件上方的井环。 可以通过该端口进行水泥化,并且在固井操作之后,塞子接合操作套筒以将操作套筒移动到外部封闭套筒中,从而关闭固井口。 固井完成后,可以钻出装置的中心部件,使外部封闭套筒永久地密封固井口。