1F.E.Dupriest, 《Maximizing ROP With Real-Time Analysis of Digital Data and MSE>,International Petroleum Technology Conference held in Doha,2005.
2Hector U.Caicedo,《Unique R, OP Predictor Using Bit-specific Coefficient of Sliding Friction and Mechanical Efficiency as a Function of Confined Compressive Strength Impacts DrillingPerformance》,SPE/IADC Drilling Conference held in Amstertam, the Netherlands, 2005.