A drill string is composed of 5,100 ft of 4½-in. drill pipe with a unit weight of 18 lbf/ft, 300 ft of 4½-in. heavyweight drill pipe with a unit weight of 41 lbf/ft of cross section 6.4023 in2, and 660 ft of 6¼-in. drill collars with a unit weight of 91 lbf/ft. If the drilling-fluid S.G 1,4 and assuming that the WOB is 34,000 lbf. Calculate the axial stress at the top of the hole and at the cross section located 2,000 ft from the top of the hole. Need Solution through 15min
A drill string is composed of 5,100 ft of 4½-in. drill pipe with a unit weight of 18 lbf/ft, 300 ft of 4½-in. heavyweight drill pipe with a unit weight of 41 lbf/ft of cross section 6.4023 in2, and 660 ft of 6¼-in. drill collars with a unit weight of 91 lbf/ft. If the drilling-fluid S.G 1,4 and assuming that the WOB is 34,000 lbf. Calculate the axial stress at the top of the hole and at the cross section located 2,000 ft from the top of the hole. Need Solution through 15min
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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A drill string is composed of 5,100 ft of 4½-in. drill pipe with a unit weight of 18 lbf/ft, 300 ft of 4½-in.
heavyweight drill pipe with a unit weight of 41 lbf/ft of cross section 6.4023 in2, and 660 ft of 6¼-in. drill collars
with a unit weight of 91 lbf/ft. If the drilling-fluid S.G 1,4 and assuming that the WOB is 34,000 lbf. Calculate the
axial stress at the top of the hole and at the cross section located 2,000 ft from the top of the hole.
Need Solution through 15min
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