Abstract: A pumpjack is operated continuously over a sequence of two adjacent pump stroke cycles, by energizing an electric motor to operate the pumpjack over a first pump stroke cycle according to a motor speed profile over a plurality of discrete control periods within the cycle, while receiving sensory feedback from one or more sensors. In response to the feedback, and while continuing to operate the pumpjack, one or more speed adjustments are made to specific control periods, so as to alter the motor speed profile while continuing to operate the electric motor to drive the pump jack. The intra-cycle control optimizes flow while reacting to detrimental and changing conditions.

Abstract: A motor-driven pumpjack is operated continuously while receiving sensory feedback from one or more sensors. In response to feedback indicating a detrimental operating condition, and while continuing to operate the pumpjack, one or more speed adjustments are made to specific control periods within the motor pumping cycle. The automated control optimizes flow while reacting to detrimental and changing conditions.

Abstract: A pumpjack is driven by an electric motor coupled to a gear box. A local drive controller controls the motor in accordance with a varying motor speed profile over a pumping cycle of the pumpjack. The drive controller determines, based on sensory feedback from the one or more sensors, a pumping cycle load profile, automatically determines, based on the pumping cycle load profile, a varying voltage profile, and controls the motor in accordance with the varying motor speed profile while applying the varying voltage profile to the motor.

Abstract: A pumpjack is operated continuously over a sequence of two adjacent pump stroke cycles, by energizing an electric motor to operate the pumpjack over a first pump stroke cycle according to a motor speed profile over a plurality of discrete control periods within the cycle, while receiving sensory feedback from one or more sensors. In response to the feedback, and while continuing to operate the pumpjack, one or more speed adjustments are made to specific control periods, so as to alter the motor speed profile while continuing to operate the electric motor to drive the pump jack. The intra-cycle control optimizes flow while reacting to detrimental and changing conditions.