Patent ID: 6413065
Filing Date: 2002-07-02
Classification: F04C

Abstract:
A modular pump for underground use in connection with an oil well, said pump comprising:a) a rotor module comprising: i) a cylindrical housing having a bottom face, a top face, a cylindrical face, an inlet, an outlet and an internal rotor enclosure between said inlet and outlet; ii) an upper pair of intertwined and counter-rotating rotors and a lower pair of intertwined and counter-rotating rotors within the internal rotor enclosure, the upper pair of rotors and the lower pair of rotors being separated by an intake plenum wherein the upper pair of rotors drives fluid upwards into an outlet plenum and the lower pair of rotors drives fluid downwards into a fluid passage which then joins the outlet plenum; iii) means for rotating the rotors; and b) a gear module having means for connecting to the drive source and means for outputting power to the rotor module.