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.

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter5: Turning

Section5.5: Taper Turning

Problem 4RQ: What are the TPI and TPF of a part with end diameters of 3/4" and 1/2" and a taper length of 4.25"?

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