Oil well pump

Details Oil well pump Oil well pump

1984-04-02

1986-07-22

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417 44, 417223, 417415, 92137, 74361, F04B 4900, F04B 3504, F16H 314

Patent

active

046016406

ABSTRACT:
An oil pump assembly having an adjustable production rate and capable of long stroke, low stroke per minute pumping rates, comprising a reciprocating pumping rod in a well hole, a counterbalancing mechanism for reducing the power needed to pump oil by the pumping rod, a driving mechanism to drive the reciprocating pumping rod and the counterbalancing mechanism, including a first cable and a second cable, to drive the reciprocating pumping rod and the counterbalancing mechanism, respectively, a speed control for the driving mechanism, and a dwell mechanism for the driving mechanism.

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