Drill bit having replaceable nozzles directing drilling fluid at a predetermined angle
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United States of America Patent
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-
Apr 15, 1986
Issued Date -
N/A
app pub date -
Oct 31, 1983
filing date -
Mar 9, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nozzle system for a rotary drill bit comprising a plurality of elongate nozzle members detachably secured in drilling fluid exit bores in a drill bit body, each nozzle member having passaging therein, the lower portion of which is angled relative to the longitudinal axis of the nozzle member, and a projection and recess arrangement for holding each nozzle member in its bore in a predetermined angular position for directing the drilling fluid to flow in a stream along a line at a predetermined angle and in a predetermined position relative to an adjacent roller cutter of the drill bit for improved cleaning of the cutting elements and the formation.
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