Table 2: Simulation data for cuttings fluid flow.

Rheological and drilling parameterCase Case
WaterMud

Fluid density (kg/m3)998.51006.3
Cuttings density (kg/m3)2761.4
Avg. cuttings size (m)0.00201
Flow behaviour index, 10.51
Viscosity consistency, , (Pa  )0.0010.289
Fluid velocity (m/s)1.524–2.7432
Inner pipe rotation speed (rpm)0, 80, 120
Diameter ratio (κ = / )0.64, 0.70, 0.80, 0.90
Eccentricity ( )0.623
ROP (m/s)0.00508