2-) Given the following data:
Drilling Fluid Density : 12 ppg
Well Depth: 10,000 ft.
Drill Bit Nozzle Sizes:13-13-13
Pump Horsepower: 1800
Pump Volumetric Efficiency: 80%
Maximum Pump Pressure: 4,500psi
Minimum Flow Rate: 350 gpm
Parasitic pressure losses of 2,173psi and 1,388 psi are anticipated while circulating mud at flowrates 500 gpm and 390 gpm respectively.
a-) Determine the parasitic pressurelosses when the bit hydraulic horsepower is maximum.
b-) Determine the optimum flow ratewhen the bit hydraulic horsepower is maximum.
c-)Determine the pressure dropacross bit nozzles when the bit hydraulic horsepower ismaximum.
d-) Determine the optimum sizes ofthree nozzles to be used for the next bit run using the maximum bithydraulic horsepower criteria.
