Oil pumping unit using an electrical submersible pump driven...

Details Oil pumping unit using an electrical submersible pump driven... Oil pumping unit using an electrical submersible pump driven...

2008-01-08

2008-01-08

Thompson, Kenneth (Department: 3672)

Wells

With eduction pump or plunger

C166S066400, C166S068000, C417S416000

Reexamination Certificate

active

07316270

ABSTRACT:
An oil pumping unit is disclosed to include a motor, which has a mover that moves alternately up and down when the motor is electrically connected, and a pump, which has a barrel, an oil suction pipe mounted in the barrel, an inner sleeve, which is connected to the suction pipe and has installed therein a mixing valve, a movable valve and a piston, a bottom one-way oil intake valve, and a one-way mixing flow intake valve respectively arranged in such a manner that when the mover is operated to reciprocate the oil suction pipe, crude oil is alternately pumped through the one-way bottom oil intake valve and the one-way mixing flow intake valve to alternately pass through the movable valve and the mixing valve to the ground.

REFERENCES:
patent: 1655825 (1928-01-01), Schmidt
patent: 4538970 (1985-09-01), Rabson
patent: 4687054 (1987-08-01), Russell et al.
patent: 4768595 (1988-09-01), Smith
patent: 5960875 (1999-10-01), Beauquin et al.
patent: 6817409 (2004-11-01), Howard

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