Rotary kinetic fluid motors or pumps – With shaft connected fluid force subjected thrust balancing...
Reexamination Certificate
2007-01-16
2007-01-16
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
With shaft connected fluid force subjected thrust balancing...
C415S229000, C384S105000, C384S625000, C384S907000
Reexamination Certificate
active
10786127
ABSTRACT:
An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas separator may also be included. The pump is powered by an electric cable that connects the pump, located in a bore hole, to a power source on the surface. A thrust runner coated with a wear layer (e.g., polymer) is provided in the motor and/or seal section to reduce bearing temperature, provide longer bearing life, reduce costs, and facilitate overhaul. The runner may also function as a rotating up-thrust bearing when the runner is coated with a wear layer on one side that is formed with a bearing geometry. In this case, the up-thrust bearing may be eliminated.
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International Search Report Dated Jun. 20, 2006.
Ide Russell Charles
Ide Russell Douglas
Bednarek Michael
Nguyen Ninh H.
Paul Hastings Janofsky & Walker LLP
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