A high efficiency fluid pumping apparatus and methods having of an electronic motor controller controlling at least one electric motor that is directly coupled to the input of a hollow helical mechanism. The output of the hollow helical mechanism is directly coupled to the shaft of a reciprocating piston pump. Each moving component of the apparatus is designed with a hollow central bore, so that the apparatus assembly will accept a continuous, stationary, hollow conduit containing electrical through wiring and or fiber optics for power and communication to devices physically positioned below the apparatus.