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We are drilling along at 6 , 0 0 0 f t with a 9 7 8 bit with a mud rate of 3 0
We are drilling along at with a bit with a mud rate of at a pump pressure of psig. At the pressure is The pump is with an efficiency of Minimum flowrate cuttings is The maximum pump pressure allowed is psig.
a If we want to maximize hydraulic impact force, what is the appropriate nozzle diameter and flow rate for the next run?
b What is the bit horsepower and impact force at these conditions?
c Say we were to come back later when we are at would you expect the optimum nozzle diameter to be larger or smaller?
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