Core drilling tools with external fluid pathways
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United States of America Patent
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Oct 28, 2014
Grant Date -
Apr 14, 2011
app pub date -
Dec 15, 2010
filing date -
Oct 7, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Implementations of the present invention include a core barrel assembly including external fluid pathways extending generally axially long the outer surface of the core barrel assembly. The one or more external fluid pathways can allow for increased fluid flow around a latch mechanism. The increased fluid flow around the latch mechanism can allow the core barrel assembly to travel faster within the drill string, can allow drilling fluid to pass by the latch mechanism when engaged. Implementations of the present invention also include drilling systems including external fluid pathways, and methods of retrieving a core sample using such drilling systems.
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