Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps
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United States of America Patent
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-
Jan 16, 2007
Grant Date -
Dec 2, 2004
app pub date -
Feb 26, 2004
filing date -
May 30, 2003
priority date (Note) -
Expired
status (Latency Note)
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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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