Wells – With eduction pump or plunger
Reexamination Certificate
2005-08-16
2005-08-16
Bagnell, David (Department: 3672)
Wells
With eduction pump or plunger
C166S068000, C166S068500, C166S372000, C417S462000, C417S487000, C417S488000
Reexamination Certificate
active
06929064
ABSTRACT:
There is disclosed an improved pump (5, 5′) particularly suitable for use in a method of “artificial lift” in an oil/gas well. Known pumps used in artificial lift methods suffer from a number of problems/disadvantages—e.g. low efficiency (hydraulic efficiency). The disclosed embodiments of the invention provide a pump (5, 5′) which provides a positive displacement of a predetermined volume of well production fluid for each operative cycle of the pump-in contra-distinction known to pumps which provide axial flow of well production fluid. The inventive pump (5, 5′) provides a chamber (10, 10′) having a volume (V, V′), an inlet (15) to the chamber (10, 10′), an outlet (20) from the chamber (10, 10′), and means for varying the volume (V, V′) of the chamber (10, 10′). The means for varying the volume (V, V′) of the chamber (10, 10′) is controlled by relative rotation of first and second bodies (30, 35, 30′, 35′).
REFERENCES:
patent: 462033 (1891-10-01), Cleveland
patent: 1403699 (1922-01-01), Loewenthal et al.
patent: 1980985 (1934-11-01), Deming
patent: 2060493 (1936-11-01), Fillmore
patent: 2462732 (1949-02-01), Dusevoir
patent: 2909126 (1959-10-01), Gordon
patent: 3804557 (1974-04-01), Bentley
patent: 4522174 (1985-06-01), Babitzka et al.
patent: 4530324 (1985-07-01), Tanaka et al.
patent: 4564341 (1986-01-01), Tanaka
patent: 4930994 (1990-06-01), Budecker
patent: 5064536 (1991-11-01), Bratten
patent: 5409360 (1995-04-01), Wycliffe
patent: 5494102 (1996-02-01), Schulte
patent: 5501580 (1996-03-01), Barrus et al.
patent: 5779901 (1998-07-01), Mosca
patent: 0713965 (1996-05-01), None
patent: 2310254 (1977-08-01), None
patent: 2310254 (1997-08-01), None
patent: 59029788 (1984-02-01), None
patent: WO 98/14695 (1998-04-01), None
patent: WO 99/20904 (1999-04-01), None
Dietmar Findeisen and Franz Findeisen, Olhydraulik, 1994, pp 230-234, Springer-Verlag, Berlin.
Bagnell David
Collins Giovanna
The HT Than Law Group
LandOfFree
Downhole pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Downhole pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3480409