Polish rod jack system

Details Polish rod jack system Polish rod jack system

1979-02-12

1981-10-27

Hornsby, H. C.

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Having motor-operated adjustment

74 41, 74583, F01B 3114, F15B 1524

Patent

active

042966787

ABSTRACT:
A polish rod jack system for an oil well pumping units that utilizes a sucker rod; incorporating a hollow hydraulic ram to raise and lower the sucker rod string; hoses and tubing to connect the hydraulic ram to a remote manifold and in turn to a hydraulic pumping source; a hydraulic and electric switchgage to stop a prime mover in the event of pumping unit and system malfunctions and or failures; quick-disconnect fittings to facilitate connection and disconnection of the hydraulic ram from the system when the well is being serviced and to allow rapid connection and disconnection of a hydraulic pump at the remote hydraulic manifold to allow the bottom hole pump to be respaced and fine tuned while the pumping unit is in operation to maximize production.

REFERENCES:
patent: 2237303 (1941-04-01), Calhoun
patent: 2698578 (1955-01-01), Anderson
patent: 3051237 (1962-08-01), Liles, Jr. et al.
patent: 3554093 (1971-01-01), Lonnemo
patent: 3679326 (1972-07-01), Weber
patent: 4118148 (1978-10-01), Allen
patent: 4119865 (1978-10-01), Elderton
patent: 4124331 (1978-11-01), Taki

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