The following well conditions are given. Parameter Well depth, ft DP OD, in DP ID, in...

 

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The following well conditions are given. Parameter Well depth, ft DP OD, in DP ID, in DP weight, lbm/ft DC (ODxID), in DC length, ft Casing (J-55) depth, ft Casing weight, lbm/ft Bit diameter, in Nozzles (three), in Power of duplex pump, hp Pump liner, in Rod size, in Stroke length, in Overall efficiency, % Surface piping, ft Mud density, ppg Minimum annular velocity, ft/min Rotational speed, rpm Dial reading, degrees Maximum surface pressure, psi Value 15000 5 4.33 19.5 8x3 600 4500 40.5 9.875 13/32 1500 Explanation Assume average hole size of 10 in. 6.5 2.5 18. 85 200 12 120 3 6 100 200 300 600 1.8 3 10 15 20 36 3500 Equivalent to drillpipe a) Compute the equivalent circulating density at depths of 4000 ft corresponding to an annular velocity opposite to drillpipe of 120 ft/min using the Power Law model. b) Compute the total nozzle area of the bit needed for maximum bit horsepower. The following well conditions are given. Parameter Well depth, ft DP OD, in DP ID, in DP weight, lbm/ft DC (ODxID), in DC length, ft Casing (J-55) depth, ft Casing weight, lbm/ft Bit diameter, in Nozzles (three), in Power of duplex pump, hp Pump liner, in Rod size, in Stroke length, in Overall efficiency, % Surface piping, ft Mud density, ppg Minimum annular velocity, ft/min Rotational speed, rpm Dial reading, degrees Maximum surface pressure, psi Value 15000 5 4.33 19.5 8x3 600 4500 40.5 9.875 13/32 1500 Explanation Assume average hole size of 10 in. 6.5 2.5 18. 85 200 12 120 3 6 100 200 300 600 1.8 3 10 15 20 36 3500 Equivalent to drillpipe a) Compute the equivalent circulating density at depths of 4000 ft corresponding to an annular velocity opposite to drillpipe of 120 ft/min using the Power Law model. b) Compute the total nozzle area of the bit needed for maximum bit horsepower.

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4 we compute the equivalent circo b P 9 4000ft cares porting to of 120 Mmin usin... View the full answer