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assuming that the flow pattern is laminar flow rate of 200 gal/ min through a drill...

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Civil Engineering

assuming that the flow pattern is laminar flow rate of 200 gal/ minthrough a drill string having a 3.826-in. id and through an 8.5-x5-in. annulus, calculate the required mud volume using 20% asvolume safety factor given that depth of drill well = 10000 ft,length of drill collars= 500 ft, OD of drillingcollar= 6.5 in, IDof drilling collar = 2.25 in, casing setting depth = 5000 ft , caseID= 8.681 in, OD of drillpipes = 5in , ID of drillpipes = 3.826in


also it is desired to increase the weight of the mud from12.0-lb/gal to 14.0-lb/gal mud. to keep the new mixture frombecoming too viscous, 1 gal of water is to be added with each 100-lb sack of barite. a final mud volume of 700 bbl is required.determine the volume percentage of inital mud that should bediscarded and the weight of barite to be added

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