Drill pipes of 1000 meter original length which is between top drive drilling motor and bottom hole assembly (HWDP, collar and drill bit) is lowered into the well. The specification of drill pipe is as follows: • OD-200 mm, ID=175 mm, E = 50 GPa, G=77.2 GPa weight : drill pipe = 100,000 N, bottom hole assembly = 35,000N Before the bottom hole assembly touch the rock formation: a) Calculate the reaction force between drill pipe and top drive drilling motor b) Calculate the elongation of drill pipe After the bottom hole assembly rest/touch on the rock formation, the elongation of the drill pipe reduces by half. c) Calculate the reaction force between drill pipe and top drive drilling motor.
Drill pipes of 1000 meter original length which is between top drive drilling motor and bottom hole assembly (HWDP, collar and drill bit) is lowered into the well. The specification of drill pipe is as follows: • OD-200 mm, ID=175 mm, E = 50 GPa, G=77.2 GPa weight : drill pipe = 100,000 N, bottom hole assembly = 35,000N Before the bottom hole assembly touch the rock formation: a) Calculate the reaction force between drill pipe and top drive drilling motor b) Calculate the elongation of drill pipe After the bottom hole assembly rest/touch on the rock formation, the elongation of the drill pipe reduces by half. c) Calculate the reaction force between drill pipe and top drive drilling motor.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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