Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device
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United States of America Patent
Stats
-
Aug 12, 2008
Grant Date -
Mar 10, 2005
app pub date -
Aug 5, 2004
filing date -
Aug 5, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Wellhead assembly and method for providing power connection to downhole electrical device. Wellhead body members support vertically stacked isolated tubing hanger and grounding tubing hanger. The isolated tubing hanger suspends a conducting tubing string, while the grounding tubing hanger suspends a grounding tubing string concentrically spaced from the conducting tubing string. The isolated tubing hanger has an outer housing, an inner electrically conducting portion supported by the outer housing to provide electrical connection with, and suspend, the conducting tubing string, and insulation between the housing and conducting portion to electrically isolate the housing. Hot electrical connection is made through a conduit in the wellhead body member, for electrical connection to the conducting tubing string. Grounding connection is provided to the wellhead body members.
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Cited Art Landscape
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