| 摘要 |
An automatic pump speed controller for controlling and maintaining the strokes per minute of a down-hole oil well pump and providing signals on the surface indicating the actual strokes per minute of the pump. The automatic pump speed controller comprises a means for measuring the strokes per minute of the pump, and a means for adjusting the pump to correspond to a preselected stroke per minute value. The automatic pump speed controller also provides for a visual read out of the actual strokes per minute of the pump which enables an observer to obtain this information. In the present invention, pressure pulses from the pump are transmitted to the invented automatic pump controller on the surface and are monitored. If the pulses indicate that the pump is operating at a rate different than the preselected rate, the controller is adapted to automatically readjust the pump to conform to the preselected rate. Because the invented controller is ably to quickly and efficiency control the pump rate, the efficiency of the oil well is greatly increased.
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