摘要 |
<p>An electrical submersible pumping (ESP) system can include a pump located in a wellbore, a motor attached to the pump, a power source located at the surface, a cable electrically coupling the power source and the motor, and a current sensor. The ESP system can also include a controller communicating with the current sensor to calculate a voltage drop associated with the cable responsive to an impedance of the cable. The controller can also control a power source output voltage responsive to the calculated voltage drop. For example, the controller can adjust the power source output voltage to minimize a cable current while maintaining a minimum motor voltage. The controller can also control a motor shaft speed by changing a power source output voltage frequency to compensate for changing slip and adjust the power source output voltage to minimize the cable current while maintaining a minimum motor voltage.</p> |
申请人 |
BAKER HUGHES INCORPORATED;YOHANAN, TOM, G.;KNOX, DICK, L.;LEUTHEN, JOHN, M.;LAYTON, JIM, E.;THOMPSON, HOWARD, G. |
发明人 |
YOHANAN, TOM, G.;KNOX, DICK, L.;LEUTHEN, JOHN, M.;LAYTON, JIM, E.;THOMPSON, HOWARD, G. |