Drill bit with a flow interrupter
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United States of America Patent
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-
Oct 1, 2013
Grant Date -
Jan 6, 2011
app pub date -
Dec 15, 2009
filing date -
Jul 6, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A drill bit comprises: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling comprises: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.
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