Wells – With below and above ground modification – Eduction pump or plunger in well
Patent
1985-03-18
1987-05-12
Novosad, Stephen J.
Wells
With below and above ground modification
Eduction pump or plunger in well
166106, 417404, F04B 1700
Patent
active
046641866
ABSTRACT:
A downhole hydraulically actuated pump has a large diameter power piston and a large diameter production pistion. A traveling valve assembly is located in the power piston and in the production piston, while fluid flow occurs through a hollow connecting rod, thereby providing a downhole pump with a maximum diameter piston assembly at the engine and production ends. A discharge guide conducts spent power fluid from the interior of the hollow connecting rod. Flow of production fluid to the traveling valve assembly of the production piston is provided through a hollow connecting rod extension. In one form of the invention, spent power fluid to which treatment fluid has been added is discharged at the bottom end of the pump assembly, thereby enabling chemical treatment to be carried out at the bottom of the wellbore.
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
Neuder William P.
Novosad Stephen J.
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