Deep well pump

Details Deep well pump Deep well pump

1979-11-20

1981-06-16

Freeh, William L.

Pumps

Including separate port on noncyclic valve for draining pump...

417554, F04B 4702, F04B 2104

Patent

active

042735203

ABSTRACT:
A pump barrel open at its lower end is coupled at its upper end by a tubular adapter assembly to the lower end of a pump tubing string, this assembly presenting an internal bevelled sealing-latching annulus, an axially bored pump head being radially expansively spring latched in a fixed axial sealed relation with the annulus to seal the upper end of the pump barrel from the adapter assembly to form a pump compression chamber surrounding a hollow polish rod extending upwardly from a plunger mounted on the lower end of the polish rod for reciprocation in the pump barrel, the plunger carrying tandem travelling valves close beneath its connection with the polish rod, the lower valve opening to receive oil through the barrel and plunger on the down stroke and concurrently delivering such oil into the compression chamber, the upper valve closing on the down stroke and opening on the up stroke during which the lower valve closes to expel oil trapped in the compression chamber upward through the upper valve into the lower end of the hollow polish rod which oil is discharged at the upper end thereof into the pump tubing string through the fitting adapting the polish rod to the lower end of the sucker rod.

REFERENCES:
patent: 2625882 (1953-01-01), Davis et al.
patent: 3102495 (1963-09-01), Page
patent: 3267872 (1966-08-01), Bloodoff
patent: 3384179 (1968-05-01), Haines

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