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    • 2. 发明申请
    • APPARATUS AND METHOD OF ZONAL ISOLATION
    • 分区隔离装置和方法
    • WO2013012931A2
    • 2013-01-24
    • PCT/US2012/047221
    • 2012-07-18
    • WEATHERFORD/LAMB, INC.RING, LevGANDIKOTA, Varadaraju
    • RING, LevGANDIKOTA, Varadaraju
    • E21B33/12
    • E21B33/124E21B43/103E21B43/105
    • Methods and apparatus include an expandable packer having a tubing expanded to create a seal in an annulus surrounding the tubing. The tubing includes a non-uniform outer surface configured to cause formation of undulations in a diameter of the tubing upon expansion of the tubing. A plurality of expandable packers may be connected to a tubular string to isolate multiple zones in a wellbore. A production tubular equipped with multiple expandable packers may be installed in the tubular string. The expandable packers may also include non-uniform outer surfaces configured to form undulations upon expansion. The combination of tubular string and production tubular may be used in an enhanced oil recovery application such as injecting steam into a formation to enhance production.
    • 方法和装置包括可膨胀封隔器,其具有扩张的管道以在围绕管道的环形空间中形成密封。 该管道包括不均匀的外表面,该外表面被配置为在管道扩张时导致在管道的直径中形成波动。 多个可膨胀封隔器可以连接到管柱以隔离井眼中的多个区域。 配备有多个可膨胀封隔器的生产管可安装在管柱中。 可膨胀封隔器还可以包括构造成在膨胀时形成起伏的不均匀外表面。 管柱和生产管的组合可用于强化油回收应用,例如将蒸汽注入地层以增加产量。