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g is composed of 9000 nd 1000 ft of drill colla the following items: w of the drillpipe in barr w of the drill collars in b

g is composed of 9000 nd 1000 ft of drill colla the following items: w of the drillpipe in barr w of the drill collars in b

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A drillstring is composed of 9000 ft of 5-in 19.5-lbm/ft drillpipe and 1000 ft of drill collars having a 3.0-in. ID. COmpute the following items: a capacity of the drillpipe in barrels. b capacity of the drill collars in barrels. c. number of pump cycles required to pump surface mud to the bit. The pump is a duplex double-acting pump with 6-in liners, 2.5in rods, 16-in stokes and operates at a volumetric efficiency of 85%. d displace ment of the drillpipe in bbl/ft. e. displacement of the drill collars in bbl/ft. the OD of the collars is 8.0 in. f. loss in fluid level in the well if 10 stands of drill pipe are pulled without filling the hole. THe ID of the casing in the hole is 10.05 in. g. loss in fluid level in the well if one stand of drill collars is pulled without filling the hole. h,. change in fluid level in the pit if the pit is 8 ft wide and 20 ft long, assuming that the hole is filled after pulling 10 stands of drillpipe
Transcribed Image Text:A drillstring is composed of 9000 ft of 5-in 19.5-lbm/ft drillpipe and 1000 ft of drill collars having a 3.0-in. ID. COmpute the following items: a capacity of the drillpipe in barrels. b capacity of the drill collars in barrels. c. number of pump cycles required to pump surface mud to the bit. The pump is a duplex double-acting pump with 6-in liners, 2.5in rods, 16-in stokes and operates at a volumetric efficiency of 85%. d displace ment of the drillpipe in bbl/ft. e. displacement of the drill collars in bbl/ft. the OD of the collars is 8.0 in. f. loss in fluid level in the well if 10 stands of drill pipe are pulled without filling the hole. THe ID of the casing in the hole is 10.05 in. g. loss in fluid level in the well if one stand of drill collars is pulled without filling the hole. h,. change in fluid level in the pit if the pit is 8 ft wide and 20 ft long, assuming that the hole is filled after pulling 10 stands of drillpipe
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