Actuation system for an oilfield tubular handling system
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United States of America Patent
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Feb 1, 2011
Grant Date -
Mar 6, 2008
app pub date -
Sep 19, 2007
filing date -
Mar 19, 2004
priority date (Note) -
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Abstract
An actuation system for a tubular handling mechanism of a tubular handling assembly has a mud flow path passing through rotating parts and non-rotating parts of the tubular handling assembly. A ball drop assembly has an opening to the mud flow path through which a ball is released. The ball drop assembly opening is positioned in a non-rotating part. A lateral passage joins the mud flow path downstream of where the ball is released. A valve is positioned in the mud flow path at the lateral passage for selectively directing a purge fluid from the mud flow path out the lateral passage.
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