Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-03-27
2010-06-22
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S089000, C166S068000, C166S108000, C417S414000
Reexamination Certificate
active
07741744
ABSTRACT:
A technique is provided to facilitate pumping of fluids in a well. A submersible pumping system utilizes a submersible motor to power a submersible pump. A motor protector works in cooperation with the submersible motor to protect motor fluid within the submersible motor and to reduce differential pressures between the internal motor fluid and the external well fluid. The motor protector incorporates a piston slidably sealed within an interior cavity of the motor protector for movement to reduce undue differential pressures.
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Du Michael H.
Rowatt John D.
Watson Arthur I.
Leung Quyen
McGoff Kevin B.
Scheuermann David W.
Schlumberger Technology Corporation
Someren Robert Van
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