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    • 9. 发明授权
    • Isolation container for a downhole electric pump
    • 井下电动泵的隔离容器
    • US06962204B2
    • 2005-11-08
    • US10414994
    • 2003-04-16
    • William A. GrubbDavid M. HaugenCorey E. Hoffman
    • William A. GrubbDavid M. HaugenCorey E. Hoffman
    • E21B27/02E21B43/12F04B47/00F04B47/06F04D13/10F04D29/42H02K5/132E21B43/26
    • F04D29/426E21B27/02E21B43/128F04B47/06F04D13/10H02K5/132
    • An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container. This fluid then flows to inlet ports on the downhole electric pump. The pressure of the pressurized fluid is then boosted or increased by the operation of the downhole electric pump. The fluid is then discharged through a tubular member, which is sealed in the outlet bore of the pressure isolation container. The tubular member extends through a packer positioned below the pressure isolation container and the boosted pressure fluid is injected into the subsurface formation. An electrical cable from the surface supplies power to the electric motor and a check valve is provided on the upper end of the pressure isolation container for releasing entrained air in the pressure isolation container.
    • 公开了一种专门用于石油和天然气钻井和生产操作中通常使用的井下电动泵组件的隔离容器。 隔离容器具有带有轴向入口和出口孔的环形壳体。 井下电动泵组件位于压力隔离容器的中心。 井下电动泵组件包括位于电动机密封部分上方并联接到电动泵的电动泵,其位于离心泵上方并联接到离心泵上,由此提供为离心泵供电的装置。 盲连接器被定位在电动机上方,其中连接有管状构件并延伸穿过隔离容器的入口。 管状构件连接到从表面供应流体的管柱。 盲连接件具有多个径向布置的端口,以允许来自表面的加压流体流入井下电动泵和隔离容器之间的环形空间。 然后该流体流入井下电动泵的入口。 然后通过井下电动泵的操作来增压或增加加压流体的压力。 然后将流体通过管状构件排出,管状构件被密封在压力隔离容器的出口孔中。 管状构件延伸穿过位于压力隔离容器下方的封隔器,并且将增压的压力流体注入地下地层。 来自表面的电缆向电动机供电,并且在压力隔离容器的上端设有止回阀,用于释放压力隔离容器内的夹带空气。