Given: Depth Hole size Full hole drill pipe Heavy wall full hole drill pipe Drill collar Viscosimeter reading @ 300 RPM Viscosimeter reading @ 600 RPM Bit nozzle size = 10,000 ft = 9.625 inches = 5x4.276", 19.5 lb/ft, X95, 2 = 5x3", 750 ft = 6.25"x 2.8125", 450 ft = 40 Bit nozzle velocity Bit nozzle constant Pump volumetric efficiency Pump mechanical efficiency = 65 = 13/32 inches = 330 ft/second = 0.93 = 0.91 = 0.86 From the given data, if the 180 psi overbalanced drilling operation uses type 4 surface equipment and 3 cones rock bit will be run at 400 gpm circulation rate, determine the practical pressure losses during the drilling operation with the assumption that the drilling mud as the Bingham Plastic fluid. (35 Marks)