Patent ID: 8892372
Filing Date: 2014-11-18
Classification: E21B,F04B,G01F

Abstract:
1. A pumping system, comprising: a pump configured to control a level of fluid over pump in a well; a motor operably coupled to the pump and configured to drive the pump; a controller operably coupled to the motor and configured to control operation of the pump, the controller comprising: a motor determination unit configured to determine motor operating parameters of a motor configured to control a pump in a well, said motor operating parameters comprising motor torque and motor speed; a pump determination unit operably coupled to the motor determination unit and configured to determine pump operating parameters based on at least one motor operating parameter, a pump operating parameter comprising one of a pump torque and a pump speed; a fluid level determination unit operably coupled to the pump determination unit and configured to determine an estimated fluid over pump level in the well;