Abstract: An artificial lift system provides an under pumping mitigation functionality through the use of a controller that adjusts a sucker rod pump's pumping speed. The controller determines whether: (a) the fillage level of the pump is equal to or above a pre-determined fillage level. The controller also determines whether the fluid level in the wellbore in which the pump is positioned is not decreasing. and increases the pumping rate of the pump if, over a given period, both (i) the fluid level is not decreasing and (ii) the pump fillage level is above the predetermined fillage level.

Abstract: An apparatus and method for use in an artificial lift system to provide under pumping mitigation functionality in which a sucker rod pump's pumping speed is adjusted through the use of a controller that determines whether: (a) the fillage level of the pump is equal to or above a pre-determined fillage level and (b) whether the fluid level in the wellbore in which the pump is positioned is not decreasing and increases the pumping rate of the pump if, over a given period, both (i) the fluid level is not decreasing and (ii) the pump fillage level is above the predetermined fillage level.

Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.

Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.

Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.

Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.