a) Mud is flowing through 4 % inch OD/ 3.64 inch ID, internal flush drill pipe. The circulating flow rate is 400gpm and the mud properties as follows : Mud weight = 10 ppg Yield point = 10 Ib/100 ft2 Plastic viscosity 30 cp 1. Calculate the pressure losses per 10,000 ft of drill pipe. 2. Calculate the pressure losses per 10,000 ft of drill pipe if use a water as a working fluids. 3. During the calculation case 2 at what velocity flow become turbulent?

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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a) Mud is flowing through 4 ½ inch OD/ 3.64 inch ID, internal flush drill pipe. The
circulating flow rate is 400gpm and the mud properties as follows :
Mud weight = 10 ppg
Yield point = 10 Ib/100 ft²
Plastic viscosity 30 cp
1. Calculate the pressure losses per 10,000 ft of drill pipe.
2. Calculate the pressure losses per 10,000 ft of drill pipe if use a water as a working
fluids.
3. During the calculation case 2 at what velocity flow become turbulent?
Transcribed Image Text:a) Mud is flowing through 4 ½ inch OD/ 3.64 inch ID, internal flush drill pipe. The circulating flow rate is 400gpm and the mud properties as follows : Mud weight = 10 ppg Yield point = 10 Ib/100 ft² Plastic viscosity 30 cp 1. Calculate the pressure losses per 10,000 ft of drill pipe. 2. Calculate the pressure losses per 10,000 ft of drill pipe if use a water as a working fluids. 3. During the calculation case 2 at what velocity flow become turbulent?
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