Patents Assigned to Artificial Lift Systems, Inc.
  • Controller for plunger lift system for oil and gas wells
    Patent number: 4664602
    Abstract: A controller is disclosed for a plunger lift system for oil and gas wells that monitors the casing pressure, flow line pressure, and battery voltage and overrides the on-time and off-time periods to either shut the well in or open the flow line valve when certain casing or flow line pressures exist or when the battery voltage drops to a preselected minimum.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: May 12, 1987
    Assignee: Artificial Lift Systems, Inc.
    Inventor: Bernard L. Gordon