Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2005-11-08
2005-11-08
Bagnell, David (Department: 3672)
Wells
Processes
Placing fluid into the formation
Reexamination Certificate
active
06962204
ABSTRACT:
An isolation container designed for use with a downhole electric pump assembly commonly used in oil and gas drilling and production operations is disclosed. The isolation container has an annular housing with an axial inlet and outlet bore. A downhole electric pump assembly is centrally located within the pressure isolation container. The downhole electric pump assembly includes an electric pump positioned above and coupled to a motor seal section which is positioned above and coupled to a centrifugal pump, thereby providing a means to power the centrifugal pump. A blind coupling is positioned above the electric motor with a tubular member connected thereto and extending through the inlet of the isolation container. The tubular member connects to a tubing string supplying fluid from the surface. The blind coupling has a plurality of radially disposed ports to allow pressurized fluid from the surface to flow into the annulus between the downhole electric pump and the isolation container. This fluid then flows to inlet ports on the downhole electric pump. The pressure of the pressurized fluid is then boosted or increased by the operation of the downhole electric pump. The fluid is then discharged through a tubular member, which is sealed in the outlet bore of the pressure isolation container. The tubular member extends through a packer positioned below the pressure isolation container and the boosted pressure fluid is injected into the subsurface formation. An electrical cable from the surface supplies power to the electric motor and a check valve is provided on the upper end of the pressure isolation container for releasing entrained air in the pressure isolation container.
REFERENCES:
patent: 2748719 (1956-06-01), Wells
patent: 3432992 (1969-03-01), Moore
patent: 4009756 (1977-03-01), Zehren
patent: 4187912 (1980-02-01), Cramer
patent: 4440221 (1984-04-01), Taylor
patent: 4537257 (1985-08-01), Todd
patent: 4662831 (1987-05-01), Bennett
patent: 4696343 (1987-09-01), Anderson et al.
patent: 5133407 (1992-07-01), Deines et al.
patent: 5176164 (1993-01-01), Boyle
patent: 5188172 (1993-02-01), Blount et al.
patent: 5203682 (1993-04-01), Inklebarger
patent: 5220962 (1993-06-01), Muller et al.
patent: 5269180 (1993-12-01), Dave et al.
patent: 5271725 (1993-12-01), Freet et al.
patent: 5517854 (1996-05-01), Plumb et al.
patent: 5626467 (1997-05-01), Cantley
patent: 5734209 (1998-03-01), Hallidy
patent: 5799834 (1998-09-01), Small et al.
patent: 5813469 (1998-09-01), Bowlin
patent: 5957656 (1999-09-01), De Long
patent: 6079491 (2000-06-01), Stuebinger et al.
patent: 6568475 (2003-05-01), Grubb et al.
patent: 97/08459 (1997-03-01), None
Grubb William A.
Haugen David M.
Hoffman Corey E.
Bagnell David
Moser, Patterson & Sheridan L.L.P.
Stephenson Daniel P
Weatherford / Lamb, Inc.
LandOfFree
Isolation container for a downhole electric 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 Isolation container for a downhole electric pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isolation container for a downhole electric pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3503893