Wells – Processes – Producing the well
Reexamination Certificate
2007-02-14
2009-11-24
Gay, Jennifer H (Department: 3672)
Wells
Processes
Producing the well
C166S105000, C166S068000
Reexamination Certificate
active
07621339
ABSTRACT:
A downhole pump, positionable in a fluid column that is substantially separated into an oil portion and a water portion, for selectively lifting the oil to a surface and injecting the water into an injection zone includes a housing having a top wall, and a bottom wall defining a cylinder; a plunger positioned within the cylinder reciprocable through an induction stroke and a production stroke; a piston moveably positioned between the plunger and the top wall separating an oil chamber from a water chamber; an oil intake assembly providing one-way fluid flow from the fluid column to the oil chamber, the oil intake assembly including means for selectively allowing induction of the oil and blocking induction of the water into the oil chamber; an oil exhaust providing one-way fluid flow from the oil chamber to the surface; a water intake providing one-way fluid flow from the fluid column to the water chamber; a flow restriction position in the water intake to substantially balance the pressure drop in the oil intake assembly; and a water discharge providing one-way fluid flow from the water chamber toward the injection zone. On the induction stroke the oil fluid is drawn into the oil chamber and the water is drawn into the water chamber at a pre-selected oil to water ratio, and on the production stroke the oil is produced to the surface and the water is injected into the injection zone if the injection zone pressure is overcome.
REFERENCES:
patent: 4267888 (1981-05-01), Singer
patent: 5497832 (1996-03-01), Stuebinger et al.
patent: 5697448 (1997-12-01), Johnson
patent: 6032743 (2000-03-01), Bowlin et al.
patent: 6131660 (2000-10-01), Stuebinger et al.
patent: 6173768 (2001-01-01), Watson
patent: 6755978 (2004-06-01), Oddie
patent: 6854518 (2005-02-01), Senyard, Sr.
patent: 2005/0098322 (2005-05-01), Balen
patent: WO 98/02637 (1998-01-01), None
patent: 00/17486 (2000-03-01), None
patent: 01/66910 (2001-09-01), None
patent: 02/10070 (2002-02-01), None
Elphick Jonathan J.
Johnson Ashley B.
Coy Nicole A
Gay Jennifer H
Kurka James L.
McGoff Kevin Brayton
Schlumberger Technology Corporation
LandOfFree
Downhole production and injection pump system 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 production and injection pump system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole production and injection pump system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4090206