Improved nozzle bore for pdc bits

Details Improved nozzle bore for pdc bits Improved nozzle bore for pdc bits

E - Fixed Constructions

21

B

E21B 10/61 (2006.01) B23P 15/28 (2006.01) E21B 10/18 (2006.01) E21B 10/46 (2006.01)

Patent

CA 2557947

An earth boring bit includes a bit body including plurality of PDC cutter elements and a fluid plenum connecting a fluid inlet to at least one fluid orifice. Furthermore, a ledge formed between a bottom of the fluid plenum and the at least one fluid orifice includes a relief region formed therein located across a flow change angle. Additionally, a method to improve a polycrystalline diamond compact drill bit body design includes determining flow change angles from a fluid plenum into a fluid orifice and modeling a relief region on a ledge to optimize fluid into the fluid orifice.

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