Downhole Isolation and Depressurization Tool
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    发明申请
    Downhole Isolation and Depressurization Tool 有权
    井下隔离和减压工具

    公开(公告)号:US20130248181A1

    公开(公告)日:2013-09-26

    申请号:US13709908

    申请日:2012-12-10

    IPC分类号: E21B34/06

    摘要: A depressurization tool is described for use downhole in depressurizing an isolated zone. A decompression chamber containing a compressible fluid volume is described. The opening of the chamber is sealed with a closure that is configured to open upon application of a pressure differential across the opening. When used downhole within an isolated and nonpermeable wellbore zone, excessive ambient pressure will cause the closure to open and allow the chamber to fill with fluid at increased pressure, depressurizing the wellbore zone. The tool is useful in wellbore completion systems that include sliding sleeves.

    摘要翻译: 描述了一种减压工具,用于在隔离区域减压时在井下使用。 描述了包含可压缩流体体积的减压室。 腔室的开口用封闭件密封,该封闭件构造成在通过开口施加压力差时打开。 当在隔离和不透气的井眼区域内使用井下时,过高的环境压力将导致封闭物打开,并允许室以增加的压力填充流体,使井眼区域减压。 该工具在包括滑动套筒的井眼完井系统中非常有用。