Question: DRILLING ENGINEERING Question 5: (14 marks) A 10,300 ft, 12.25 hole will be drilled within 0.45 psi/ft formation pressure gradient with 185.4 psig overbalanced using

DRILLING ENGINEERING

Question 5: (14 marks)

A 10,300 ft, 12.25 hole will be drilled within 0.45 psi/ft formation pressure gradient with 185.4 psig overbalanced using 9,800, 3.5, 15.5 lb/ft, G105, NC3, 2 drill pipe and 6.252 13/16 drill collar. If 6 sheaves rollers bearing hoisting system is used, calculate the load on the rig while pulling out the drill string for connection.

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