Gas interference in downhole oilfield pumps is an old and well-known problem. Horizontal wellbore topology and construction exasperates this problem. Artificially lifting an oil and gas well involves two discrete state-variable spaces: the pumping system and backside multiphase flow. While positive strides have been made around optimizing the pumping system state-space, optimization of that system cannot optimally control the latter since they are defined by different, discrete state-spaces. My patented, field-tested closed loop control system tackles the “second” state system and adds stability to an otherwise unstable open loop system.