Method for detecting pump-off of a rod pumped well
    1.
    发明授权
    Method for detecting pump-off of a rod pumped well 失效
    检测抽油杆抽油的方法

    公开(公告)号:US5237863A

    公开(公告)日:1993-08-24

    申请号:US802799

    申请日:1991-12-06

    Inventor: Cleon L. Dunham

    CPC classification number: F04B49/02 E21B47/0006 E21B47/0008 F04B2201/12

    Abstract: A method for monitoring a rod pumped well and detecting when the well is pumped off. The method utilizes the measured rod load and position for each stroke to set load limits and position limits. The load limits and position limits are set as predetermined percentages of the difference between the maximum and minimum measured rod load and position. The area within the thus determined load and position limits is determined to detect when the well has pumped-off.

    Abstract translation: 一种用于监测杆抽取井并检测井何时抽出的方法。 该方法利用测量的杆载荷和每个行程的位置来设定载荷极限和位置限制。 负载限制和位置限制设置为最大和最小测量的杆载荷和位置之间的差的预定百分比。 确定如此确定的负载和位置限制内的区域以检测井何时抽出。

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