CAPACITY AND DISPLACEMENT OF API DRILL PIPE Regular / Heavy Weight (HWDP) Nominal Size (inches) 2 3/8 2 3/8 2 7/8 2 7/8 2 7/8 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 4 4 4 1/2 4 1/2 4 1/2 4 1/2 4 1/2 5 5 5 1/2 5 1/2 5 9/16 5 9/16 5 9/16 6 5/8 6 5/8 6 5/8 6 5/8 8 5/8 Weight (lbs/ft) 4.80 6.65 6.45 8.35 17.26 8.50 11.20 13.30 15.50 25.65 14.00 29.92 12.75 13.75 16.60 20.00 41.45 19.50 50.38 21.90 61.63 19.00 22.20 25.25 22.20 25.20 31.90 71.43 40.00 Outside Dia. (inches) Inside Dia. (inches) Capacity (bbls/ft) Displacement (bbls/ft) 2.375 2.375 2.875 2.875 2.875 3.5 3.5 3.5 3.5 2.0625 4 4 4.5 4.5 4.5 4.5 4.5 5 5 5.5 5.5 5.5625 5.5625 5.5625 6.625 6.625 6.625 6.625 8.625 2 1.815 2.469 2.323 1.5 3.063 2.9 2.764 2.602 2.0625 3.34 2.5625 4 3.958 3.826 3.64 2.75 4.276 3 4.778 3.25 4.975 4.859 4.733 6.065 5.965 5.761 4.5 7.825 0.003886 0.003200 0.005922 0.005242 0.002186 0.009114 0.008170 0.007422 0.006577 0.004132 0.010837 0.006379 0.015543 0.015218 0.014220 0.012871 0.007347 0.017762 0.008743 0.022177 0.010261 0.024044 0.022936 0.021762 0.035734 0.034565 0.032241 0.019672 0.059482 0.001594 0.002279 0.002108 0.002787 0.005844 0.002786 0.003730 0.004479 0.005323 0.000000 0.004706 0.009164 0.004129 0.004453 0.005451 0.006800 0.012325 0.006524 0.015543 0.007209 0.019125 0.006014 0.007122 0.008296 0.006903 0.008072 0.010396 0.022965 0.012784