Pumps – Expansible chamber type – Mechanically actuated distributor
Patent
1978-06-26
1980-09-09
Freeh, William L.
Pumps
Expansible chamber type
Mechanically actuated distributor
417566, F04B 2102
Patent
active
042215510
ABSTRACT:
A sliding valve pump for oil wells which includes a working barrel having a plurality of apertures located in spaced relationship in the wall thereof and a pair of travelling valves fitted within the working barrel and carried by a plunger rod, the valves also having a plurality of apertures or ports for periodic registration with the ports in the working barrel wall to facilitate pumping of fluid from an oil reservoir or pool to the surface. The pump is designed to pull the oil-gas mixture from the reservoir pool into the lower section of the working barrel on the downward stroke, and to subsequently pump the collected oil through the barrel and tubing upwardly toward the surface on the upward stroke.
REFERENCES:
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patent: 3026812 (1962-03-01), Carty
patent: 3292552 (1966-12-01), Chancellor et al.
patent: 3469532 (1969-09-01), Wegmann et al.
patent: 3578886 (1971-05-01), Nino
patent: 4087212 (1978-05-01), Holder
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