Downstroke lift pump for wells

Pumps – Motor driven – Electric or magnetic motor

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Details

417439, 417557, F04B 1704, F04B 2102

Patent

active

045389705

ABSTRACT:
A reciprocating electric motor-pump assembly for wells lifts well fluid on downstroke of the motor-pump assembly, and with the motor above the pump the well fluid is conducted from below the motor to above the motor via a flow passage through the motor armature, which is tubular.

REFERENCES:
patent: 1655825 (1928-01-01), Schmidt
patent: 1699726 (1929-01-01), Warmuth
patent: 2006592 (1935-07-01), Freeman
patent: 2083058 (1937-06-01), De Weal
patent: 2253780 (1941-08-01), Gurley
patent: 2604049 (1952-07-01), Martin
patent: 2833220 (1958-05-01), Robinson et al.
patent: 3116695 (1964-01-01), Fuller
patent: 3756750 (1973-09-01), Summerfield
patent: 4350478 (1982-09-01), Oldershaw et al.
"Intro. to Petroleum Production", 1982, Gulf Publishing Comp., Houston, TX, pp. 55-63.
Brantly, "Rotary Drilling Handbook", 1961, Palmer Publications, N.Y., N.Y. pp. 599, 600.

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