Numerical simulation of bottomhole flow filed of PDC bit with side nozzles
Abstract
To analyze the effects of a steerable nozzle on the flow field at the bottomhole, CAD software in conjunction with Gambit is used to design PDC drill bit models with steerable nozzles. Fluent flow modelling was then used to perform flow simulations at the bottom of the hole. The research results show that the assemblage of steerable nozzles has maximized the hydraulic energy of two jet streams to enhance drill cuttings cleaning and minimize the formation of mud in drill mud PDC to ultimately improve the mechanical drilling rate.
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