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    • 1. 发明申请
    • Annular isolators for tubulars in wellbores
    • 环形管中的环形隔离器
    • US20050023003A1
    • 2005-02-03
    • US10778465
    • 2004-02-13
    • Ralph EcholsJohn GanoJoshua Hornsby
    • Ralph EcholsJohn GanoJoshua Hornsby
    • E21B33/12E21B43/10
    • E21B43/106E21B33/12E21B33/127E21B43/103E21B43/108
    • The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming material is placed in the annulus around the first deployable isolator. The first isolator is then deployed into the material in the annulus to form a combined isolator. The annular isolator forming material is carried in a compartment in the tubing and forced from the compartment into the annulus. A second deployable isolator may be deployed before placing the material in the annulus to resist annular flow of the material before the first isolator is deployed. The second isolator may be deployed by material from the compartment. A second compartment may be provided to deploy the first isolator.
    • 本公开涉及在安装生产管道之后在钻孔中形成环形隔离器的装置和方法。 第一个可展开的环形隔离器在其位于钻孔中时被承载在管道上。 环形隔离器形成材料放置在第一可部署隔离器周围的环形空间中。 然后将第一隔离器部署到环形空间中的材料中以形成组合隔离器。 环形隔离器形成材料被承载在管道中的隔室中并且被迫从隔室进入环形空间。 在将材料放置在环形空间内之前可以部署第二可部署的隔离装置,以在第一隔离器展开之前抵抗材料的环形流动。 第二隔离器可以通过隔室的材料来展开。 可以提供第二隔室以部署第一隔离器。