Method optimizes hydraulics with PDM and bit

To meet the challenges of extended-reach drilling, deep and ultradeepwater wells, and horizontal completions, the drilling industry has dramatically increased its use of downhole positive displacement motors (PDM) during the past few years.With these wells pushing the limits of rigs and equipment, it is imperative that operators use motors optimally in the system.More often, however, drilling engineers do not include downhole motor pressure-loss calculations in the overall hydraulic optimization and bit-nozzle selection with the available pump power.To make the system more effective, engineers must take into consideration various motor and drilling parameters for hydraulic optimization. T...

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