P10) A 10,000-ft drillstring is composed of 8,500 ft of 5-in., drillpipe (ID = 4.276 in.), 1000 ft of 5 x 3 in. heavy weight drill pipe and 500 ft of 8 x 3 in. drill collar. The previous casing shoe is at the depth of 7500 ft and has an ID of 10 %". The bit diameter is 9 1/2" and has two #12 nozzles and one #13 nozzle. An 11 ppg mud is circulated at 450 gpm, calculate the mud average velocity in the drillpipe, heavy weight drill pipe, drill collar, and bit nozzles. In addition, calculate the average mud velocity in the annulus apposite to each drillstring section.
P10) A 10,000-ft drillstring is composed of 8,500 ft of 5-in., drillpipe (ID = 4.276 in.), 1000 ft of 5 x 3 in. heavy weight drill pipe and 500 ft of 8 x 3 in. drill collar. The previous casing shoe is at the depth of 7500 ft and has an ID of 10 %". The bit diameter is 9 1/2" and has two #12 nozzles and one #13 nozzle. An 11 ppg mud is circulated at 450 gpm, calculate the mud average velocity in the drillpipe, heavy weight drill pipe, drill collar, and bit nozzles. In addition, calculate the average mud velocity in the annulus apposite to each drillstring section.
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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Transcribed Image Text:P10) A 10,000-ft drillstring is composed of 8,500 ft of 5-in., drillpipe (ID = 4.276 in.), 1000 ft of 5 x
3 in. heavy weight drill pipe and 500 ft of 8 x 3 in. drill collar. The previous casing shoe is at the depth
of 7500
ft and has an ID of 10 %". The bit diameter is 9 1/2" and has two #12 nozzles and one #13 nozzle. An
11 ppg
mud is circulated at 450 gpm, calculate the mud average velocity in the drillpipe, heavy weight drill
pipe, drill
collar, and bit nozzles. In addition, calculate the average mud velocity in the annulus apposite to
each
drillstring section.
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