Automatic pump for deep wells

Details Automatic pump for deep wells Automatic pump for deep wells

1976-01-22

1978-10-17

Freeh, William L.

Pumps

Processes

417392, 417390, F04B 910

Patent

active

041206126

ABSTRACT:
An automatic pump for deep wells comprises a long stroke reciprocating pump having its piston normally in its bottom position and an automatic control dependent upon the collection of a predetermined amount of liquid in the pump cylinder above the piston for actuating the piston to pump the liquid into a production line. The automatic control includes a hydraulic pump and a reservoir of hydraulic fluid which is actuated upon filling of the reciprocating pump chamber to supply hydraulic fluid to a closed chamber below the piston and force the piston upwardly to discharge liquid from the pump cylinder. The hydraulic pump is reversed automatically upon completion of the pumping stroke of the piston.

REFERENCES:
patent: 1381562 (1921-06-01), Jones
patent: 2626569 (1953-01-01), Knudson
patent: 2770197 (1956-11-01), Deitrickson
patent: 2942552 (1960-06-01), Wayt
patent: 3050006 (1962-08-01), Wolf
patent: 3091181 (1963-05-01), Wolf
patent: 3164095 (1965-01-01), Williams
patent: 3521445 (1970-07-01), Grable
patent: 3589838 (1971-06-01), Tuzson

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