If the work done by drilling lines while casing at 8000 ft depth is 150 ton...

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If the work done by drilling lines while casing at 8000 ft depth is 150 ton miles, one joint of casing internal wight gradient of casing is 36 th ft. Use the following data to calculate: The Derrick loud Drill pipe spetification 8000 ft, 5 in and 21.65 Ib/f Drill collar specification: 8 length of drill pipe, 8 in and 158.73 lb/Mad weight 12 Ib/gal Number of strung lines 12 Sheave eficiency coefficient 0.9615 Dril string density: 489.5 Ib/ft. If the work done by drilling lines while casing at 8000 ft depth is 150 ton miles, one joint of casing internal wight gradient of casing is 36 th ft. Use the following data to calculate: The Derrick loud Drill pipe spetification 8000 ft, 5 in and 21.65 Ib/f Drill collar specification: 8 length of drill pipe, 8 in and 158.73 lb/Mad weight 12 Ib/gal Number of strung lines 12 Sheave eficiency coefficient 0.9615 Dril string density: 489.5 Ib/ft.