Double-acting reciprocating downhole pump

Details Double-acting reciprocating downhole pump Double-acting reciprocating downhole pump

2004-11-02

2008-11-04

Freay, Charles G (Department: 3746)

Pumps

Pump fluid biased overcenter load equalizer

C417S546000, C417S547000, C417S555200

Reexamination Certificate

active

07445435

ABSTRACT:
A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump first comprises a plunger. The plunger is reciprocated axially within the wellbore by a linear actuator, such as a submersible electrical pump, in order to form an upstroke and a downstroke. A pump inlet is disposed near the bottom end of the plunger, while a pump outlet is disposed near the top end of the plunger. The pump is configured such that it is able to pump a first volume of fluid upward within the wellbore during the pump's upstroke, and a second volume of fluid upward within the wellbore during the pump's downstroke. Thus, the pump is “double-acting.”

REFERENCES:
patent: 1549175 (1925-08-01), Adams et al.
patent: 2660124 (1953-11-01), Porter
patent: 2684639 (1954-07-01), Sutton
patent: 3945774 (1976-03-01), Doan
patent: 4548552 (1985-10-01), Holm
patent: 4562385 (1985-12-01), Rabson
patent: 4687054 (1987-08-01), Russell et al.
patent: 4815949 (1989-03-01), Rabson
patent: 4924670 (1990-05-01), Bausch et al.
patent: 4936383 (1990-06-01), Towner et al.
patent: 5196770 (1993-03-01), Champs et al.
patent: 5252043 (1993-10-01), Bolding et al.
patent: 5314025 (1994-05-01), Priestly
patent: 5431229 (1995-07-01), Christensen
patent: 5620048 (1997-04-01), Beauquin
patent: 5657821 (1997-08-01), Beauquin et al.
patent: 5734209 (1998-03-01), Hallidy
patent: 5831353 (1998-11-01), Bolding et al.
patent: 5960875 (1999-10-01), Beauquin et al.
patent: 6138763 (2000-10-01), Beauquin
patent: 6176308 (2001-01-01), Pearson
patent: 6203288 (2001-03-01), Kottke
patent: 6213722 (2001-04-01), Raos
patent: 6250384 (2001-06-01), Beauquin
patent: 6283720 (2001-09-01), Kottke
patent: 6288470 (2001-09-01), Breit
patent: 6289575 (2001-09-01), Hollingsworth et al.
patent: 2002/0079763 (2002-06-01), Fleshman et al.
patent: 2002/0197174 (2002-12-01), Howard
patent: 2 385 911 (1978-10-01), None
patent: 1442737 (1976-07-01), None

Affiliated with

Also associated with

Rating

Double-acting reciprocating 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 Double-acting reciprocating downhole pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double-acting reciprocating downhole pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4046854