Paper: Subsurface Electric Pump Well Test Analysis

The subsurface electrical pump, being a relatively high-volume type of artificial lift, is most applicable in wells which are under the influence of a strong water-drive or waterflood and have high water cuts or low GOR"s. The economics of producing these high water-cut wells is directly related to the cost of electrical energy used and the operating lift of the equipment. To optimize the electrical cost and operating life, one must understand the basic characteristics of the motor, centrifugal pump and cable. This paper covers those basic concepts and presents a well test analysis technique with the corrective steps to be taken to accomplish the lowest cost per barrel of fluid lifted.