Building the dynamometer card of sucker rod pump using power consumption of the eclectic motor of pumping unit

Abstract

The present paper gives analytical expression of relation between gravity force on the polished rod and power consumption of the electric motor from the power line with allowance for parameters of the pumping unit, allowing one to build a dynamometer card of sucker rod pump based on the obtained wattmeter card.

Novel physical network algorithm for indirect measurement of polished rod load of beam‐pumping unit

“…Therefore, it is crucial to study the indirect measurement algorithm of the polished rod load. The common approach to calculate the polished rod force is to model the pumping unit by electrical parameters [5–9]. Compared with load sensors, the power sensors are more reliable and more accurate, and the installing of the power sensors is much easier [10].…”

Tracking the multi‐well surface dynamometer card state for a sucker‐rod pump by using a particle filter

“…Furthermore, force sensors must be calibrated, leading to a forced stop of the pumping unit. Another approach to obtaining the plot is to model the pumping unit by electrical parameters and indirectly calculate the polished rod force [2][3][4][5][6]. The measurement of electrical parameters does not affect oil production, and the measured values are more reliable and accurate.…”