... 2 Given that bit type and formation, w, l, β, D b , φ , and ψ are know, m and n t can be computed by the Ma complex model simulation program under certain drilling conditions. If the factors of tooth wear is taken into account, and the final ROP model becomes: Eq.11...

... recommended parameters from the other parts. To optimize the drilling parameters, it is required that an appropriate ROP model to be selected until acceptable results are obtained. In literature, there are various applicable models to predict the ROP such as Bourgoyne and Young model, Bingham model...