Subsurface Annular Safety Barrier
    2.
    发明申请
    Subsurface Annular Safety Barrier 失效
    地下环形安全栅

    公开(公告)号:US20070034380A1

    公开(公告)日:2007-02-15

    申请号:US11533138

    申请日:2006-09-19

    IPC分类号: E21B34/06

    CPC分类号: E21B33/12

    摘要: A subsurface annular safety barrier for controlling fluid flow in the tubing-casing annulus in an annular flow well. The barrier may be positioned proximate the top of a formation to block fluid flow through the annulus upon loss of casing integrity. An embodiment of the annular safety barrier includes a packer and a valve, wherein the valve is operated to a closed position without mechanical manipulation of the tubing.

    摘要翻译: 用于控制环形流动井中管壳环空中的流体流动的地下环形安全屏障。 隔离物可以靠近地层的顶部定位,以在损失套管完整性时阻止流过环路的流体。 环形安全屏障的一个实施例包括封隔器和阀,其中在没有机械操纵管道的情况下,阀被操作到关闭位置。