143114 ⎘
Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid the units or parts thereof being liftable to ground level by fluid pressure
Apparatus and method for pumping a reservoir
#2Systems and methods for artificial lift subsurface injection and downhole water disposal
#3Hydraulic pumping system with enhanced piston rod sealing
#4Hydraulic pumping system with detection of fluid in gas volume
#5Hydraulic gravity ram pump
#6Hydraulic gravity ramp pump
#7Submersible hydraulic artificial lift systems and methods of operating same
#8Hydraulic gravity ram pump
#9Hydraulic gravity ram pump
#10Compressed air operated fluid pump applied to oil wells