Capsule for two downhole pump modules

Details Capsule for two downhole pump modules Capsule for two downhole pump modules

2007-05-17

2010-06-15

Bagnell, David J (Department: 3676)

Pumps

Motor driven

Electric or magnetic motor

C417S423200, C417S423500, C166S105000, C166S105500, C166S369000

Reexamination Certificate

active

07736133

ABSTRACT:
Upstream and downstream pump assemblies are mounted in a capsule having a bulkhead between the upstream and downstream pump assemblies, dividing the capsule into upstream and downstream chambers sealed from each other. In a dual operation mode, well fluid flows through the inlet of the capsule into the upstream chamber, where it is pumped to a first pressure level by the upstream pump assembly and discharged into the downstream chamber. The downstream pump assembly then pumps the well fluid to a second pressure level and discharges the well fluid out the outlet of the capsule. The assembly has also an upstream pump assembly only operational mode and a downstream pump assembly only operational mode.

REFERENCES:
patent: 5099920 (1992-03-01), Warburton et al.
patent: 6082452 (2000-07-01), Shaw et al.
patent: 6138758 (2000-10-01), Shaw et al.
patent: 6325143 (2001-12-01), Scarsdale
patent: 6412563 (2002-07-01), St. Clair et al.
patent: 6595295 (2003-07-01), Berry et al.
patent: 6691782 (2004-02-01), Vandevier
patent: 6964299 (2005-11-01), Scarsdale
patent: 2004/0060707 (2004-04-01), Bearden et al.
patent: 2071766 (1981-09-01), None
patent: 2345307 (2000-07-01), None

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