Well pump device

Details Well pump device Well pump device

2011-03-08

2011-03-08

Gay, Jennifer H (Department: 3676)

Wells

With junk retrieving means

C166S383000, C166S301000, C166S109000

Reexamination Certificate

active

07900695

ABSTRACT:
A well pump device is introduced into a well and connects to a wireline to receive electrical energy from the surface. An electrically driven feed pump connects to and delivers driving fluid to the driving side of an ejector. A hydraulic apparatus uses the well pump device as a pulling tool.

REFERENCES:
patent: 2732901 (1956-01-01), Davis
patent: 6095583 (2000-08-01), Beeman et al.
patent: 6168388 (2001-01-01), Hughes et al.
patent: 6427776 (2002-08-01), Hoffman et al.
patent: 2264147 (1993-08-01), None
patent: 2331536 (1999-05-01), None

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