Multiple Horsepower Rated Motors

When a new well is completed, sizing is based on basic information provided by the depth of the pump and fluid, size of pump, stroke length, speed of pumping unit, and specific gravity of the fluid. Technical Data used in the field explained in petroleum courses in Rawalpindi.  There are many variables in calculations that are not always considered and may affect the required motor size. Sometimes, overlooked variables influencing loading on the motor are: actual fluid level, viscosity of fluid, deviation of hole, friction in the pump, friction in the stuffing box, excessive friction coming from the pumping unit, and quality of electric power available. Because of the many variables involved, it is sometimes difficult to size a motor accurately for new installation on the first attempt. Sometimes multiple-rated motors are considered as pumping unit drivers. Some more details of petroleum courses in rawalpindi are as under.

Multiple horsepower rated motors usually have three different modes available. Table 10.4 lists typical sizes available.

An ultrahigh-slip motor is also a multiple-rated motor, usually being quadruple rated. The stator winding of this motor has been designed for multiple connections. The ultrahigh-slip capability is a result of special design characteristics incorporated in its rotor,  is two graphs that show a comparison of ultrahigh-slip motors to the horsepower rated motors. The first illustration shows the horsepower rated motors with only one torque mode available. The second shows an ultrahigh-slip motor with four-mode capability. For maximum benefits, the ultrahigh-slip motor should be used in the lowest-torque mode possible without exceeding its thermal limit. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join oil field after petroleum courses in Islamabad.