Hydraulic feedback pump with two different pump series and the diameter of the rod pump, this pump into the oil plug valves are mounted on a plunger; there is no valve on pump barrel.
Features:
Plunger hydraulic feedback force when it is down, can help the piston downward, particularly suitable for production of heavy oil Wells
Do not need to move pump barrel and tubing while downhole testing and stem injection for heavy oil layers for thermal recovery.
Do not need install tubing feeder.
MAIN SPECIFICATIONS AND PARAMETERS
|