EXTENDED OR RAISED NOZZLE FOR PDC BITS
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United States of America Patent
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Issued Date -
Jun 23, 2016
app pub date -
Nov 25, 2015
filing date -
Dec 23, 2014
priority date (Note) -
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Abstract
A drill bit includes a bit body having a pin end capable of attaching to a drill string, a cutting end having a plurality of blades extending radially therefrom and separated by a plurality of channels therebetween, and a fluid plenum open to receiving drilling fluid from the drill string. The drill bit further includes at least one cutting element in a cutter pocket formed on the plurality of blades, at least one fluid flow passageway extending from the fluid plenum to at least one nozzle bore, at least one nozzle attached to the at least one nozzle bore and having a nozzle face spaced apart from the bit body, and an protruding body having an transition surface extending from the bit body to proximate the nozzle face. A width of the protruding body varies along a height of the protruding body from proximate the bit body to proximate the nozzle face.
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