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    • 4. 发明申请
    • Systems and Methods for Automatic Forward Phasing Determination in a Downhole Pump System
    • 井下泵系统中自动正相确定的系统和方法
    • US20110033314A1
    • 2011-02-10
    • US12537154
    • 2009-08-06
    • Sheldon PlittJerald R. RiderDick L. KnoxWilliam Carter, JR.
    • Sheldon PlittJerald R. RiderDick L. KnoxWilliam Carter, JR.
    • F04B49/00
    • F04B47/06F04B49/02
    • Systems and methods for controlling an electrical drive such as is used with electric submersible pumps used in downhole oil production, wherein the drive automatically determines the proper phasing to drive the pump motor in a forward direction. In one embodiment, a method includes generating a drive signal having an initial phasing and driving the pump to establish a column of fluid in the borehole. The drive signal is then discontinued, allowing the column of fluid to fall through the pump and cause the pump to backspin and generate a signal having phasing corresponding to the reverse rotational direction. The forward phasing is then determined to be the opposite of the phasing corresponding to the reverse rotational direction. The pump can be restarted in the forward direction, or an operator can be notified of the proper phasing to produce forward rotation of the pump.
    • 用于控制电驱动的系统和方法,例如用于井下油生产中的电潜泵,其中驱动装置自动确定适当的定相以沿正向驱动泵马达。 在一个实施例中,一种方法包括产生具有初始定相的驱动信号并驱动泵以在钻孔中建立一列流体。 然后停止驱动信号,允许流体列通过泵落下并使泵反向旋转并产生具有与反向旋转方向对应的定相的信号。 然后将正向定相确定为与反向旋转方向对应的定相的相反。 泵可以向前方向重新启动,或者可以向操作者通知正确的定相以产生泵的正向旋转。