A flow management and separation system for a horizontal wellbore having a primary artificial lift device having an intake has (a) a sealed central flowpath from a fluidseeker weighted keel inlet, through a recovery flow tube, a seal bore extension and a dip tube having a pump intake sealing assembly in fluid communication with the lift device intake; and (b) a mixed fluid flow path from a fluidseeker internal bypass passage, through an annulus of at least one slug catcher comprising a perforated shell.