Hydraulic well pumping apparatus

Details Hydraulic well pumping apparatus Hydraulic well pumping apparatus

1983-04-11

1987-03-03

Look, Edward K.

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

60369, 91 6, 91275, 91350, 92114, F16D 3102

Patent

active

046465170

ABSTRACT:
For use with a pumped well having a string of sucker rods connecting to a downhole pump, hydraulic pumping apparatus is disclosed. In the preferred and illustrated embodiment, a polished rod is surrounded by a selectively located sleeve. The sleeve locks to a piston in a hydraulic cylinder. The piston is forced upwardly. The length of stroke is adjusted. The location of the sleeve on the polished rod is likewise adjustable. This enables the device to be adjusted so that any length of sucker rods can be accommodated without requiring cutting sucker rods to achieve a particular length. Moreover, the length of stroke is adjustable to take into account the stroke of the pump and sucker rod elongation during operation.

REFERENCES:
patent: 1001282 (1911-08-01), Kimber
patent: 2355669 (1944-08-01), Moser
patent: 2582264 (1952-01-01), Schneck et al.
patent: 3335640 (1967-08-01), Conrad
patent: 4347049 (1982-08-01), Anderson
patent: 4414808 (1983-11-01), Benson
patent: 4449896 (1984-05-01), Klepper et al.

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