Wells – With eduction pump or plunger – Having liquid-gas separator
Reexamination Certificate
2005-05-10
2005-05-10
Bagnell, David (Department: 3672)
Wells
With eduction pump or plunger
Having liquid-gas separator
C166S065100, C166S237000, C417S368000, C417S414000, C417S473000
Reexamination Certificate
active
06889765
ABSTRACT:
The invention generally concerns a submersible well pumping system comprising an axially elongated housing and a multi-chamber hydraulically driven diaphragm pump suspended in a well. The pump is driven by a self-contained, closed hydraulic system, activated by an electric, pneumatic or hydraulic motor. Several embodiments are used to reverse the flow of working fluid into and out of the working fluid sub-chambers of a two chambered diaphragm pump to operate the diaphragm pump over all operating conditions including starts and stops, and low speed. Generally, the embodiments sense the end of the pumping stroke, either directly or by time. When the end of the pumping stroke is sensed, the direction of flow is reversed by changing the state of a directional valve, operating a reversing clutch, or by deactivating one prime mover-auxiliary pump and activating a second that operates in the reverse direction.
REFERENCES:
patent: 2435179 (1948-01-01), McGovney
patent: 2644401 (1953-07-01), Ragland
patent: 2861518 (1958-11-01), Pleuger
patent: 2961966 (1960-11-01), Zillman et al.
patent: 3739073 (1973-06-01), Schneider et al.
patent: 3749526 (1973-07-01), Ferrentino
patent: 4346256 (1982-08-01), Hubbard et al.
patent: 4490095 (1984-12-01), Soderberg
patent: 4665281 (1987-05-01), Kamis
patent: 4902206 (1990-02-01), Nakazawa et al.
patent: 5146982 (1992-09-01), Dinkins
patent: 5269377 (1993-12-01), Martin
patent: 6017198 (2000-01-01), Traylor et al.
patent: 6059539 (2000-05-01), Nyilas et al.
patent: 6168388 (2001-01-01), Hughes et al.
patent: 6183217 (2001-02-01), Elliott et al.
patent: 6454010 (2002-09-01), Thomas et al.
patent: 6533039 (2003-03-01), Rivas et al.
patent: 6550535 (2003-04-01), Traylor
patent: 6595280 (2003-07-01), Traylor
patent: 6722854 (2004-04-01), Forsberg
Bagnell David
P.C. Conley Rose
Smith Matthew J.
Smith Lift, Inc.
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