Methods and ultra-low density sealing compositions for sealing pipe in well bores
    10.
    发明授权
    Methods and ultra-low density sealing compositions for sealing pipe in well bores 有权
    井筒密封管的方法和超低密度密封组合物

    公开(公告)号:US06367549B1

    公开(公告)日:2002-04-09

    申请号:US09960768

    申请日:2001-09-21

    IPC分类号: E21B3314

    摘要: The present invention provides methods and ultra-low density sealing compositions for sealing pipe in well bores penetrating formations which readily fracture at low hydrostatic pressures. A method of the invention basically comprises the steps of providing a hardenable ultra-low density sealing composition comprised of an epoxide containing liquid, a hardening agent, a hardening accelerating agent, a light weight filler and hollow glass michrospheres having a density in the range of from about 5 to 8.5 pounds per gallon, placing the sealing composition in the annulus between the pipe to be sealed and the walls of the well bore and allowing the sealing composition to harden therein.

    摘要翻译: 本发明提供了在低流体静力学压力下容易断裂的井眼穿透地层中密封管道的方法和超低密度密封组合物。 本发明的方法基本上包括以下步骤:提供一种可硬化的超低密度密封组合物,其由含环氧化物的液体,硬化剂,硬化促进剂,轻质填料和中空玻璃多孔体组成,密度范围为 每加仑约5至8.5磅,将密封组合物放置在要密封的管和孔的壁之间的环空中,并允许密封组合物在其中硬化。