Downhole hydraulic actuated pump

Details Downhole hydraulic actuated pump Downhole hydraulic actuated pump

1987-02-02

1988-09-06

Novosad, Stephen J.

Wells

With below and above ground modification

Eduction pump or plunger in well

166106, 417404, F04B 1700

Patent

active

047685891

ABSTRACT:
A downhole hydraulically actuated pump assembly has an engine end and a pump end. A traveling valve assembly is included in both the engine end and the pump end. A discharge guide assembly is interposed between the engine and the pump ends, and thereby enables the connecting rod between the engine and pump ends to be greatly increased in length for a specific size. The traveling valve of the pump end includes a lost motion coupling by which the valve is shifted each stroke of the engine. A formation fluid passageway extends from the lower end of the pump, directly through a rod extension, and into the traveling valve. Accordingly, this novel combination and improvements provide a downhole pump assembly having the maximum diameter engine and pump piston.

REFERENCES:
patent: 3182598 (1965-05-01), McArthur et al.
patent: 4032266 (1977-06-01), Roeder
patent: 4084923 (1978-04-01), Roeder
patent: 4406598 (1983-09-01), Walling
patent: 4477234 (1984-10-01), Roeder
patent: 4492537 (1985-01-01), Awerkamp
patent: 4541783 (1985-09-01), Walling
patent: 4664187 (1987-05-01), Roeder

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