Paper: Some Good Operating Practices For Electrified Lease Pumping

The principal causes of motor failure in the oil field are: (1) Lighting strikes or surges (2) Single-phasing of power system supply (3) Overload or high current conditions due to low voltage conditions on the line, voltage drops, voltage unbalance on 3-phase power supply or the motor incorrectly sized to load. Are these problems the result of design or of equipment specifications? Further, what can be done to lessen equipment failures from these causes?