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Pump control device, oil well with device and method

  • US 20110097214A1
  • Filed: 10/26/2009
  • Published: 04/28/2011
  • Est. Priority Date: 10/26/2009
  • Status: Active Grant
First Claim
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1. An oil well includinga pump having a drive mechanism operably connected to an AC electric motor powered by AC electrical energy from a power grid, anda variable frequency AC drive that controls the AC electrical energy in the motor to decrease motor speed by transferring the electrical energy to the power grid and to increase motor speed by transferring the electrical energy from the power grid to the motor,said variable frequency AC drive regulating the motor speed in a manner to optimize oil production and maximize the operational life of the drive mechanism.

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