Question: DRILLING ENGINEERING Question 3: (12 marks) A 12 hole will be drilled using 9,200, 54.276, 25.6 lb/ft, NC50, E75, 2 drill pipe and 93 drill

DRILLING ENGINEERING

Question 3: (12 marks)

A 12 hole will be drilled using 9,200, 54.276, 25.6 lb/ft, NC50, E75, 2 drill pipe and 93 drill collar. If 10.6 ppg fresh water based mud will be used and 33,000 lbs weight on bit is required to drill efficiently and safely, calculate the required drill collar length. What will be the impact to the bottom hole assembly if the fresh water based mud density increased to 11.0 ppg.

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