Q2/ Calculate the maximum axial stress for a 40-ft joint of 11.75-in, 60 lbm/ft, J-55 casing with short threads coupling. Where the casing is subjected to 280000 lb, axial tension load in a portion of a directional wellbore with dogleg severity of 2'/50 ft. In case of: (1)Uniform contant between the casing and the borehole wall. (2)Assuming contant between borehole wall and the casing only at the couplings,and (3)Calculate the joint setrength of the API round thread couplings.(oult = 75000 psi, wall thickness = 0.489-in, Pc= 2660 psi. o yb-952000 lb, Fj-649 000 lbf). %3D

Q2/ Calculate the maximum axial stress for a 40-ft joint of 11.75-in, 60 lbm/ft, J-55 casing with short threads coupling. Where the casing is subjected to 280000 lb, axial tension load in a portion of a directional wellbore with dogleg severity of 2'/50 ft. In case of: (1)Uniform contant between the casing and the borehole wall. (2)Assuming contant between borehole wall and the casing only at the couplings,and (3)Calculate the joint setrength of the API round thread couplings.(oult = 75000 psi, wall thickness = 0.489-in, Pc= 2660 psi. o yb-952000 lb, Fj-649 000 lbf). %3D

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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