Bearings (machine parts) 1 Drilling optimization 1 Drilling parameters 1 Equivalent strength Gas hydrates 1 Gases 1 Hydration 1 Infill drilling 1 Lithology 1 Logging while drilling 1 MSE 1 Measurement while drillings 1 Mechanical specific energies 1 Offshore oil well production 1 Oil bearing formations 1 Optimization techniques 1 Parameter optimization 1 Sediments 1 Surface drilling 1 Surface drilling parameter 1 hydrates 1 surface drilling parameters 1 torque 1